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*Frequently Asked Questions* for Tetracycine users

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#101 Catsito

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Posted 15 August 2009 - 10:32 AM

You clear me some things, and I am really grateful for it... yet I have only one question

I am 15 years old, and I was prescribed to eat one pill of doxycyline 100mg a day for a month. After the month, he now told me to take one pill every two days, and consequently after the breakouts stops. Right, now I don't think it's working at all, but the amount of acne I have nowadays is much less than before.

P.S: I have a delicate stomach, plus inherited atopy



#102 NeyaNey

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Posted 22 October 2009 - 06:37 AM

Im on minocycline once day, I just read on FAQ it's rarely related to developemenr of lupus. Should someone with lupus NOT take minocycline?
Background - I have reynauds phenomenon and positive ANA. Along with a laundry list of non-serious symptoms. I was not diagnosed with lupus(good) but told it was highly suspected and should treat myself as someone with a dx. This happend years ago and haven't had incidnce since(knock on wood)

#103 Mumble

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Posted 19 February 2010 - 04:13 AM

I notice that a 'sore throat' is a side effect of Minocycline. And I have a sore throat, I have for about two days. I've been on 2x 50mg of Minocycline a day since the 2nd of February. I wonder if it is caused by the Minocycline or if I'm just sick? I don't know.

Edited by Mumble, 19 February 2010 - 04:13 AM.


#104 NeonBlonde

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Posted 10 November 2010 - 04:49 PM

oops wrong thread

Edited by NeonBlonde, 10 November 2010 - 04:52 PM.


#105 momflorida

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Posted 20 December 2010 - 11:02 AM

Thank you for posting this! I am on day 10 of solodyn 65mg and experiencing that initial breakout ughh! But it was good to see that that can happen and is common, that will help me stick with this!

#106 Mindwitch

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Posted 13 February 2011 - 11:44 PM

i have a question. about a year ago i was on tetrycycline and it worked wonderfully for me but then after awhile it wore off. i was thinking of taking some anti biotics to fix my skin once more but was wondering if my immunity to tetrycycline would still remain and prevent minocycline and doxy working on me.

#107 Norvegicus

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Posted 10 April 2012 - 08:14 PM

Comments:

1. There is a fair amount of mojibake in this post - non-ASCII characters that did not render correctly. I am using Firefox 11 with great Unicode support and compliance, so I am sure most users are seeing mojibake. Can we fix this somehow?

2. The post lists the potency of tetracyclines as "minocycline -> doxycycline -> tetracycline". I believe the "->" should be replaced with simply ">", then it would be correct. Also, it says minocycline is "the less potent [sic]", but the literature indicates minocycline is the most potent, or perhaps tied with doxycycline for most potent. The post says tetracycline is the most potent of the three, but the scientific literature and FDA labeling are quite unanimous in agreeing that tetracycline is the least potent of the three. Really obvious evidence: tetracycline pills contain about 2.5 times more drug (by mass) than minocycline or doxycycline pills. Common doxycycline and minocycline dose forms are 50 mg or 100 mg, whereas 250 mg tetracycline pills are common. For an overview, see UpToDate. I don't actually have access to UpToDate at the moment, but I could probably find citations from Pubmed if need be.

3. (Minor complaint) This post uses the capitalized form "Tetracycline" to mean the specific antibiotic named tetracycline, and it uses the uncapitalized form "tetracycline" to mean any of the tetracycline-class antibiotics. I am glad a distinction was drawn, and I am glad the OP was consistent, but that is not a "proper" way to do it. Problem 1: If someone quotes you out of context. Problem 2: If someone doesn't read the explanation. Problem 3: Tetracycline is a generic name and should not be capitalized, capitalizing a drug name usually indicates it is a brand name.

Better alternatives:
A. Use "Tetracyn" when referring to the individual drug. Tetracyn is a common brand name for tetracycline, and is unambiguous.
B. Use "tetracyclines", the plural, when referring to the whole class. The individual drug is the singular.
C. Use "tetracycline antibiotics" when referring to the whole class. That is VERY clear what you mean, and it is only one extra word.

Edited by Norvegicus, 10 April 2012 - 08:26 PM.


#108 sarahyoung75

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Posted 25 April 2012 - 10:32 PM

Frequently Asked Questions – Tetracyclines

Disclaimer: The information below is provided as a courtesy to address general questions. As we are not medical professionals, we cannot be held responsible for the accuracy of this information. By reading this information, you agree not to hold us liable for any damages that may result in your use of this information. This information should not replace information that your Doctor or Plastic Surgeon provides you. Please keep in mind that this is for general information only and results will vary for each individual. Always take your medicine exactly as prescribed by your doctor.

-------

Tetracyclines are common antibiotics prescribed to help kill acne-causing bacteria in a patient’s body. There are three different kinds of tetracycline in terms of acne: Minocycline, Doxycycline, and Tetracycline. Side effects and other information regarding the three tetracyclines are generally the same; for this reason, grouping all three into one convenient FAQ is appropriate.

For the purposes of this FAQ, assume that Minocycline is the less potent of the three, Doxycyline is next in line, and Tetracycline is the most potent. So, in terms of strength:

Tetracyclines:
Minocycline -> Doxycyline -> Tetracycline


Also, note that the stronger the tetracycline, the greater the type, severity, and risk of side effects.

In this FAQ, lowercase â€Å"tetracycline(s)â€? refers to any of the above three drugs. Capital â€Å"Tetracyclineâ€? refers to the specific drug at the end of the above spectrum.


-------

What else are tetracyclines prescribed as?
- Minocycline is often sold as Minocin, Dynacin, Ventrin , Minocin Oral, and generic Minocycline.
- Doxycycline is often sold as Doryx, Doxy Caps, Doxychel Hyclate, Monodox, Periostat, Vibra-Tabs, and Vibramycin
- Tetracycline is often sold as Achromycin V, Panmycin, Robitet Robicaps, Sumycin, Tetracap, and Topicycline
- There is generally no difference each drug brand, except, as some may argue, for â€Å"filler ingredientsâ€? which affect how the tetracycline is absorbed. Your doctor will prescribe what he or she feels is the most effective brand of the drug.

How do tetracyclines work?
- Tetracyclines are antibiotics absorbed into the bloodstream through the digestive system. They have two acne fighting components. They kill acne-causing bacteria, but they also contain anti-inflammatory agents. This means that tetracyclines CAN help acne, even if they fail to kill the underlying bacteria. In fact, the American Osteopathic College of Dermatology says that Minocycline â€Å"is safer than ibuprofen,â€? which is also an anti-inflammatory.

What is the normal dosage for the drug?
- Depending on your age, weight, the severity of your acne problem, and the professional advice of your doctor, tetracyclines may be prescribed to be taken once a day to up to four times a day in dosages ranging from 50mg to 500mg each.
- Generally, the dosage depends on the strength of the drug. Some doctors increase the dosage as their patients progress through the standard Minocycline > Doxycyline > Tetracycline drug process.

How should I take a tetracycline?
- Tetracyclines come in capsules/tablets (and occasionally syrups) and are to be taken orally. Unless your doctor or pharmacist tells you otherwise, take tetracyclines on an empty stomach. However, if this results in an upset stomach, ask your doctor if it is ok to take it with milk or with food.
- Always take them with a full glass of water.
- Do not lie down until thirty minutes to an hour has elapsed after taking a tetracycline, as doing so may prevent proper absorption.

What else will my doctor prescribe while on a tetracycline?
- It is commonplace for a doctor or dermatologist to also prescribe a topical cream or gel to combat existing acne on the surface, thus maximizing results. Your doctor may also put you on a vitamin supplement that will promote proper skin complexion and overall skin health without conflicting with the tetracycline.
- Your doctor may also take a culture sample of the liquid, or pus, with in a pimple to make sure that your acne is not caused by a parasite-like microorganism within your body

Can tetracyclines come into conflict with other medications if taken at the same time?
- Yes. Tetracyclines may decrease the effectiveness of another antibiotic if taken simultaneously. Inform your doctor if you are currently doing so. This drug may also complicate the effectiveness of some antacids, anticoagulants, penicillin, and oral contraceptives.
- It is also suggested that patients avoid taking tetracyclines within one to three hours of taking antacids, calcium supplements, and laxatives containing magnesium. This is because these drugs may prevent the proper absorption of tetracyclines from the digestive system into the blood stream.

What can I expect within the first few weeks of taking a tetracycline?
- Within the first few weeks, your body may experience a breakout. This is normal and to be expected; it is your body’s way of getting used to the tetracycline. Think of it as the tetracycline â€Å"pushingâ€? all the dormant acne to the surface – if the particular drug is right for you, clear skin may follow.
- When starting out, headache or dizziness may occur, but these should subside once your body gets used to the antibiotic.

So how long before I start seeing results?
- It depends on the severity of your acne, however, most patients see improvement in about four to six weeks after starting a tetracycline regimen. For some, it may be longer, or never happen at all, in which case you should contact your doctor.

What are the symptoms of a tetracycline overdose? What should I do incase of such an overdose?
- Overdosing on a tetracycline can result in complications, including but not limited to nausea, vomiting, diarrhea, and even the overall ineffectiveness of the medication in the long term.
- For these reasons, the importance of taking the antibiotic exactly as prescribed is paramount.
- If you suspect an overdose, seek immediate medical attention from your doctor, a hospital, or your poison control center at 1-800-222-1222. Remember that an overdose may not necessarily yield the aforementioned side effects, but could still be hazardous to your health.

Is it ok to take tetracyclines at different times of the day?
- A tetracycline work best when a consistent amount of the drug is in your body. For this reason, take your drug at regular intervals, as suggested below:

- If prescribed once a day: take once every 24 hours.
- If prescribed twice a day: take once every 12 hours.
- If prescribed three times a day: take once every 8 hours.
- If prescribed four times a day, take once every 6 hours.


And so on. Regardless of what you read online or elsewhere, always take your medicine as directed by your doctor.

Is it ok for my children to take tetracyclines?
- Unless your doctor believes otherwise, generally the answer is no. Tetracyclines may cause permanent yellow discoloration of the teeth and possibly even growth defects in patients eight years or younger.

What lifestyle changes should I make while taking tetracyclines?
- Tanning is not a good idea. The higher your dosage, the more susceptible to the sun’s harmful UV rays your skin becomes. Thus, you will burn easier and quicker. For this reason, you should always wear sun screen and protective clothing to avoid damaging your skin and actually making your acne worse.
- Limit alcoholic beverages as much as possible, as your liver and kidneys may be weakened by the medicine.
- Tell your dentist or surgeon if you are on a tetracycline before getting surgery, since your body is more sensitive to punctures and damage while on the medicine.
- Take caution when operating machinery, as tetracyclines can make you dizzy.
- Since tetracyclines weaken your immune system, it's probably a good idea to avoid smoking cigarettes and getting high as much as possible. Doing so won't make your skin worse, but it could make the post-antibiotic recovery process longer.

My skin is breaking out, and I have some leftover tetracycline. Even though it is expired, can I still take it to suppress my current breakout?
- No. Taking expired tetracyclines can result in a severe kidney condition, so promptly discard it.

I’m afraid I might be allergic to tetracyclines. What side effects should I watch for?
- About 1% of the population is allergic to tetracyclines. If you suspect you may be among this percentage, discontinue taking the antibiotic until you can consult with your doctor.
- Those allergic to tetracyclines may experience a breakout in hives two or three weeks after beginning the treatment. Other side effects related to an allergic reaction may include a sick feeling, swelling of the lips, face, or tongue, difficulty breathing, rash, skin lesions/sores, itching, severe dizziness, new or worsening swelling/pain in the joints, chest pain, and a fast/irregular heartbeat.

Is getting pregnant ok while on a tetracycline?
- Absolutely not. Tetracyclines can harm a fetus in the womb or possibly a breastfed baby, resulting in improper bone and tooth development. If you become pregnant, immediately stop taking the tetracycline and consult your doctor.
- Also, tetracyclines may reduce the effectiveness of certain forms of birth control, such as the pill or patch. For this reason, always use a second form of birth control.

What are some other possible side effects of tetracyclines?
- As with any drug, there are often a wide variety of possible side effects. Some that are not necessarily cause for deep concern include: itching of the rectum or vagina, diarrhea, furry darkening or black discoloration of the tongue, vision changes. discolored eyes, genital sores or itches, decreased appetite, nausea, vomiting, vaginal yeast infection, confusion, and dizziness.
- If any of these become intolerable, consult your doctor.
-Additionally, your doctor should be informed if you have any of the following side effects: skin rash, unusual bleeding or bruising, pain or discomfort in the mouth, throat sores, fever, chills, nail discoloration, muscle pain, difficult or painful swallowing, change in amount or color (typically a dark color) of urine, brown/gray tooth discoloration, numbness/tingling of the hands/feet, unusual fatigue, persistent or severe headache, vision changes, easy bruising/bleeding, severe stomach/abdominal pain, and yellowing eyes/skin.
- Some of these side effects may be caused by an allergy to sulfites, so it might be a good idea to tell your doctor if you are, in fact, allergic to them.
- Tetracyclines may also cause a rare, but severe intestinal condition known as pseudomembranous colitis. This may even occur weeks after stopping the tetracycline regimen. Persistent diarrhea and/or abdominal or stomach pain/cramping may be signs of this condition, so contacting your doctor immediately if you experience either is imperative.

Are there any permanent side effects associated with tetracyclines?
-Yes. 1 in every 10,000 Minocycline users will develop hypersensitivity-lupus, characterized by severe joint pains. This form of lupus is unique to Minocycline users, and may appear up to three years AFTER the last dose of Minocycline is taken.
- 1 in every 10,000 tetracycline users may also experience psychological problems, or even â€Å"pseudotumor cerebri,â€? which is an accumulation of fluid around the brain, causing progressively worsening headaches and vision problems.
- While the odds that the average tetracycline user will get these side effects are low, it should be noted that they DO exist, and that these risks should be assessed by you and your doctor.

What are the risks of being on a tetracycline for over a year or more?
- An accumulation of tetracyclines in the body may cause one’s skin to develop a purplish tint. They look like bruises, and can take up to a year to fade away. Routine doctor visits and Vitamin C 500mg twice daily can reduce this risk.
- The longer you are on an antibiotic, the less effective it becomes. This is because the acne-causing bacteria becomes immune to the antibiotic by mutating into â€Å"super bacteria,â€? making your acne worse and possibly untreatable. Further, if you get another kind of infection while on a tetracycline (for example, pneumonia), antibiotics may not be an effective treatment option. This is a serious cause for concern. Antibiotics can also cause Candida, a condition where white patches form on one’s tongue. This is because the acne antibiotic also kills beneficial bacteria found on the tongue that fights off a naturally-occurring yeast infection. Other side effects still exist, but tetracycline users should always work with their doctors to find alternatives to antibiotic use.

-------
"Doxycycline." RxList Monographs. 08 December 2004. RxList. 03 August 2005. <http://www.rxlist.co...doxycyc_ids.htm>.

"Minocycline." Dermatologic Disease Database. 2004. American Osteopathic College of Dermatology. 06 July 2005. <http://www.aocd.org/......ycline.html>.

"Minocycline." Drugs.com 2005 version. 14 February 2003. Micromedex Physicians Desk Reference. 06 July 2005. <http://www.nlm.nih.g...er/a682101.html>.

"Minocycline." RxList Monographs. 08 December 2004. RxList. 06 July 2005.
<http://www.rxlist.co...minocycline.htm>.

"Minocycline Oral." MedlinePlus Drug Information. 01 April 2003. American Society of Health-System Pharmacists, Inc. 06 July 2005. <http://www.drugs.com/minocycline.html>.

"Questions and Answers for Consumers on Doxycycline." Center for Drug Evaluation and Research. 02 November 2001. FDA. 03 August 2005. <http://www.fda.gov/c...oxy/QA_doxy.htm>.

"Tetracycline." Drugs.com 2005 version. 01 April 2003. Micromedex Physicians Desk Reference. 03 August 2005.
<http://www.nlm.nih.g...er/a682098.html>.

-------

I myself have taken Minocycline, Doxycycline, and Tetracycline for my skin at different times (I have since been off all medications). At one point I was taking 500mg Tetracycline twice a day – that’s an entire gram of antibiotics daily. I did this research to inform myself and others about what these drugs do, and what the risks are. I want to keep this guide accurate, up to date, and helpful, so if you have any questions, comments, or corrections, please message me and I will edit this post. Thank you and good luck.

-------

Change/Edit Log:
08-05-05: Added advice regarding smoking while on tetracyclines.
08-12-05: Added a question addressing how long it takes for a tetracycline regimen to yield results.

Frequently Asked Questions – Tetracyclines

Disclaimer: The information below is provided as a courtesy to address general questions. As we are not medical professionals, we cannot be held responsible for the accuracy of this information. By reading this information, you agree not to hold us liable for any damages that may result in your use of this information. This information should not replace information that your Doctor or Plastic Surgeon provides you. Please keep in mind that this is for general information only and results will vary for each individual. Always take your medicine exactly as prescribed by your doctor.

-------

Tetracyclines are common antibiotics prescribed to help kill acne-causing bacteria in a patient’s body. There are three different kinds of tetracycline in terms of acne: Minocycline, Doxycycline, and Tetracycline. Side effects and other information regarding the three tetracyclines are generally the same; for this reason, grouping all three into one convenient FAQ is appropriate.

For the purposes of this FAQ, assume that Minocycline is the less potent of the three, Doxycyline is next in line, and Tetracycline is the most potent. So, in terms of strength:

Tetracyclines:
Minocycline -> Doxycyline -> Tetracycline


Also, note that the stronger the tetracycline, the greater the type, severity, and risk of side effects.

In this FAQ, lowercase â€Å"tetracycline(s)â€? refers to any of the above three drugs. Capital â€Å"Tetracyclineâ€? refers to the specific drug at the end of the above spectrum.


-------

What else are tetracyclines prescribed as?
- Minocycline is often sold as Minocin, Dynacin, Ventrin , Minocin Oral, and generic Minocycline.
- Doxycycline is often sold as Doryx, Doxy Caps, Doxychel Hyclate, Monodox, Periostat, Vibra-Tabs, and Vibramycin
- Tetracycline is often sold as Achromycin V, Panmycin, Robitet Robicaps, Sumycin, Tetracap, and Topicycline
- There is generally no difference each drug brand, except, as some may argue, for â€Å"filler ingredientsâ€? which affect how the tetracycline is absorbed. Your doctor will prescribe what he or she feels is the most effective brand of the drug.

How do tetracyclines work?
- Tetracyclines are antibiotics absorbed into the bloodstream through the digestive system. They have two acne fighting components. They kill acne-causing bacteria, but they also contain anti-inflammatory agents. This means that tetracyclines CAN help acne, even if they fail to kill the underlying bacteria. In fact, the American Osteopathic College of Dermatology says that Minocycline â€Å"is safer than ibuprofen,â€? which is also an anti-inflammatory.

What is the normal dosage for the drug?
- Depending on your age, weight, the severity of your acne problem, and the professional advice of your doctor, tetracyclines may be prescribed to be taken once a day to up to four times a day in dosages ranging from 50mg to 500mg each.
- Generally, the dosage depends on the strength of the drug. Some doctors increase the dosage as their patients progress through the standard Minocycline > Doxycyline > Tetracycline drug process.

How should I take a tetracycline?
- Tetracyclines come in capsules/tablets (and occasionally syrups) and are to be taken orally. Unless your doctor or pharmacist tells you otherwise, take tetracyclines on an empty stomach. However, if this results in an upset stomach, ask your doctor if it is ok to take it with milk or with food.
- Always take them with a full glass of water.
- Do not lie down until thirty minutes to an hour has elapsed after taking a tetracycline, as doing so may prevent proper absorption.

What else will my doctor prescribe while on a tetracycline?
- It is commonplace for a doctor or dermatologist to also prescribe a topical cream or gel to combat existing acne on the surface, thus maximizing results. Your doctor may also put you on a vitamin supplement that will promote proper skin complexion and overall skin health without conflicting with the tetracycline.
- Your doctor may also take a culture sample of the liquid, or pus, with in a pimple to make sure that your acne is not caused by a parasite-like microorganism within your body

Can tetracyclines come into conflict with other medications if taken at the same time?
- Yes. Tetracyclines may decrease the effectiveness of another antibiotic if taken simultaneously. Inform your doctor if you are currently doing so. This drug may also complicate the effectiveness of some antacids, anticoagulants, penicillin, and oral contraceptives.
- It is also suggested that patients avoid taking tetracyclines within one to three hours of taking antacids, calcium supplements, and laxatives containing magnesium. This is because these drugs may prevent the proper absorption of tetracyclines from the digestive system into the blood stream.

What can I expect within the first few weeks of taking a tetracycline?
- Within the first few weeks, your body may experience a breakout. This is normal and to be expected; it is your body’s way of getting used to the tetracycline. Think of it as the tetracycline â€Å"pushingâ€? all the dormant acne to the surface – if the particular drug is right for you, clear skin may follow.
- When starting out, headache or dizziness may occur, but these should subside once your body gets used to the antibiotic.

So how long before I start seeing results?
- It depends on the severity of your acne, however, most patients see improvement in about four to six weeks after starting a tetracycline regimen. For some, it may be longer, or never happen at all, in which case you should contact your doctor.

What are the symptoms of a tetracycline overdose? What should I do incase of such an overdose?
- Overdosing on a tetracycline can result in complications, including but not limited to nausea, vomiting, diarrhea, and even the overall ineffectiveness of the medication in the long term.
- For these reasons, the importance of taking the antibiotic exactly as prescribed is paramount.
- If you suspect an overdose, seek immediate medical attention from your doctor, a hospital, or your poison control center at 1-800-222-1222. Remember that an overdose may not necessarily yield the aforementioned side effects, but could still be hazardous to your health.

Is it ok to take tetracyclines at different times of the day?
- A tetracycline work best when a consistent amount of the drug is in your body. For this reason, take your drug at regular intervals, as suggested below:

- If prescribed once a day: take once every 24 hours.
- If prescribed twice a day: take once every 12 hours.
- If prescribed three times a day: take once every 8 hours.
- If prescribed four times a day, take once every 6 hours.


And so on. Regardless of what you read online or elsewhere, always take your medicine as directed by your doctor.

Is it ok for my children to take tetracyclines?
- Unless your doctor believes otherwise, generally the answer is no. Tetracyclines may cause permanent yellow discoloration of the teeth and possibly even growth defects in patients eight years or younger.

What lifestyle changes should I make while taking tetracyclines?
- Tanning is not a good idea. The higher your dosage, the more susceptible to the sun’s harmful UV rays your skin becomes. Thus, you will burn easier and quicker. For this reason, you should always wear sun screen and protective clothing to avoid damaging your skin and actually making your acne worse.
- Limit alcoholic beverages as much as possible, as your liver and kidneys may be weakened by the medicine.
- Tell your dentist or surgeon if you are on a tetracycline before getting surgery, since your body is more sensitive to punctures and damage while on the medicine.
- Take caution when operating machinery, as tetracyclines can make you dizzy.
- Since tetracyclines weaken your immune system, it's probably a good idea to avoid smoking cigarettes and getting high as much as possible. Doing so won't make your skin worse, but it could make the post-antibiotic recovery process longer.

My skin is breaking out, and I have some leftover tetracycline. Even though it is expired, can I still take it to suppress my current breakout?
- No. Taking expired tetracyclines can result in a severe kidney condition, so promptly discard it.

I’m afraid I might be allergic to tetracyclines. What side effects should I watch for?
- About 1% of the population is allergic to tetracyclines. If you suspect you may be among this percentage, discontinue taking the antibiotic until you can consult with your doctor.
- Those allergic to tetracyclines may experience a breakout in hives two or three weeks after beginning the treatment. Other side effects related to an allergic reaction may include a sick feeling, swelling of the lips, face, or tongue, difficulty breathing, rash, skin lesions/sores, itching, severe dizziness, new or worsening swelling/pain in the joints, chest pain, and a fast/irregular heartbeat.

Is getting pregnant ok while on a tetracycline?
- Absolutely not. Tetracyclines can harm a fetus in the womb or possibly a breastfed baby, resulting in improper bone and tooth development. If you become pregnant, immediately stop taking the tetracycline and consult your doctor.
- Also, tetracyclines may reduce the effectiveness of certain forms of birth control, such as the pill or patch. For this reason, always use a second form of birth control.

What are some other possible side effects of tetracyclines?
- As with any drug, there are often a wide variety of possible side effects. Some that are not necessarily cause for deep concern include: itching of the rectum or vagina, diarrhea, furry darkening or black discoloration of the tongue, vision changes. discolored eyes, genital sores or itches, decreased appetite, nausea, vomiting, vaginal yeast infection, confusion, and dizziness.
- If any of these become intolerable, consult your doctor.
-Additionally, your doctor should be informed if you have any of the following side effects: skin rash, unusual bleeding or bruising, pain or discomfort in the mouth, throat sores, fever, chills, nail discoloration, muscle pain, difficult or painful swallowing, change in amount or color (typically a dark color) of urine, brown/gray tooth discoloration, numbness/tingling of the hands/feet, unusual fatigue, persistent or severe headache, vision changes, easy bruising/bleeding, severe stomach/abdominal pain, and yellowing eyes/skin.
- Some of these side effects may be caused by an allergy to sulfites, so it might be a good idea to tell your doctor if you are, in fact, allergic to them.
- Tetracyclines may also cause a rare, but severe intestinal condition known as pseudomembranous colitis. This may even occur weeks after stopping the tetracycline regimen. Persistent diarrhea and/or abdominal or stomach pain/cramping may be signs of this condition, so contacting your doctor immediately if you experience either is imperative.

Are there any permanent side effects associated with tetracyclines?
-Yes. 1 in every 10,000 Minocycline users will develop hypersensitivity-lupus, characterized by severe joint pains. This form of lupus is unique to Minocycline users, and may appear up to three years AFTER the last dose of Minocycline is taken.
- 1 in every 10,000 tetracycline users may also experience psychological problems, or even â€Å"pseudotumor cerebri,â€? which is an accumulation of fluid around the brain, causing progressively worsening headaches and vision problems.
- While the odds that the average tetracycline user will get these side effects are low, it should be noted that they DO exist, and that these risks should be assessed by you and your doctor.

What are the risks of being on a tetracycline for over a year or more?
- An accumulation of tetracyclines in the body may cause one’s skin to develop a purplish tint. They look like bruises, and can take up to a year to fade away. Routine doctor visits and Vitamin C 500mg twice daily can reduce this risk.
- The longer you are on an antibiotic, the less effective it becomes. This is because the acne-causing bacteria becomes immune to the antibiotic by mutating into â€Å"super bacteria,â€? making your acne worse and possibly untreatable. Further, if you get another kind of infection while on a tetracycline (for example, pneumonia), antibiotics may not be an effective treatment option. This is a serious cause for concern. Antibiotics can also cause Candida, a condition where white patches form on one’s tongue. This is because the acne antibiotic also kills beneficial bacteria found on the tongue that fights off a naturally-occurring yeast infection. Other side effects still exist, but tetracycline users should always work with their doctors to find alternatives to antibiotic use.

-------
"Doxycycline." RxList Monographs. 08 December 2004. RxList. 03 August 2005. <http://www.rxlist.co...doxycyc_ids.htm>.

"Minocycline." Dermatologic Disease Database. 2004. American Osteopathic College of Dermatology. 06 July 2005. <http://www.aocd.org/......ycline.html>.

"Minocycline." Drugs.com 2005 version. 14 February 2003. Micromedex Physicians Desk Reference. 06 July 2005. <http://www.nlm.nih.g...er/a682101.html>.

"Minocycline." RxList Monographs. 08 December 2004. RxList. 06 July 2005.
<http://www.rxlist.co...minocycline.htm>.

"Minocycline Oral." MedlinePlus Drug Information. 01 April 2003. American Society of Health-System Pharmacists, Inc. 06 July 2005. <http://www.drugs.com/minocycline.html>.

"Questions and Answers for Consumers on Doxycycline." Center for Drug Evaluation and Research. 02 November 2001. FDA. 03 August 2005. <http://www.fda.gov/c...oxy/QA_doxy.htm>.

"Tetracycline." Drugs.com 2005 version. 01 April 2003. Micromedex Physicians Desk Reference. 03 August 2005.
<http://www.nlm.nih.g...er/a682098.html>.

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I myself have taken Minocycline, Doxycycline, and Tetracycline for my skin at different times (I have since been off all medications). At one point I was taking 500mg Tetracycline twice a day – that’s an entire gram of antibiotics daily. I did this research to inform myself and others about what these drugs do, and what the risks are. I want to keep this guide accurate, up to date, and helpful, so if you have any questions, comments, or corrections, please message me and I will edit this post. Thank you and good luck.

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Change/Edit Log:
08-05-05: Added advice regarding smoking while on tetracyclines.
08-12-05: Added a question addressing how long it takes for a tetracycline regimen to yield results.



I love reading your post about tetracycline antibiotic.Your FAQ is excellent. Good information. Thanks for sharing

#109 jkel777

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Posted 19 May 2012 - 12:11 PM

I don't know where to post this, but this seems like a good place. My derm prescribed me a low dose of doxy over a period of about 6 months. I also take Vitamin B5, and she said I could continue taking that along with the doxy. Only problem is, the Vitamin B5 contains calcium (it's in the form of d-calcium pantothenate) AND it's also time released. I searched around and couldn't find anything, so I was wondering, is it still ok to take this form of B5 with doxy? Does the time release mean that it's constantly releasing calcium into my bloodstream, and therefore binding to the doxy? Any help would be greatly appreciated. Thanks!

#110 Sofielinney

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Posted 20 January 2013 - 12:49 PM

Hi, i was wondering if you could help me?
  • I was on tetracycline from the age of 16-18, two years straight and it worked really well
  • I stopped taking tetracycline when i was 19 because i wasn't getting acne anymore and foolishly thought i had grown out of it
  • I had the odd one or two pimples on and off but nothing major. Then I came back from travelling in September 2012 and my skin broke out like crazy (still 19)
  • I went back to my dermatologist and he told me to continue with tetracycline and use epiduo
  • I have been using it since October and my acne has reduced but i still have, and i am getting, acne acne on my lower face which is causing bad PIH
Is it possible i have become immune to tetracycline? Should I try a different antibiotic or accutane? I am so unhappy with my skin and i don't want to enter my adulthood with bad acne :( Please help

#111 tiffany13

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Posted 04 February 2013 - 05:45 PM

Hi, i was wondering if you could help me?


  • I was on tetracycline from the age of 16-18, two years straight and it worked really well
  • I stopped taking tetracycline when i was 19 because i wasn't getting acne anymore and foolishly thought i had grown out of it
  • I had the odd one or two pimples on and off but nothing major. Then I came back from travelling in September 2012 and my skin broke out like crazy (still 19)
  • I went back to my dermatologist and he told me to continue with tetracycline and use epiduo
  • I have been using it since October and my acne has reduced but i still have, and i am getting, acne acne on my lower face which is causing bad PIH
Is it possible i have become immune to tetracycline? Should I try a different antibiotic or accutane? I am so unhappy with my skin and i don't want to enter my adulthood with bad acne sad.png Please help

The only thing that worked for me was Accutane.  I took everything above you listed.  It cleared temporarily but always came back.  Get on Accutane before the acne ruins you skin.