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Kirstin

Formula for Cummulative Dosage

(Dosage per day) * (Length of Treatment in Days)

-----------------------------------------------------------------------

(Weight in Kilograms)

So, a 40mg dose for 5 months (approximately 30 * 5 days) on a 60 kg person would be:

(40 mg) * (5 months * 30 days)

-------------------------------------------- = 100 mg/kg/day

(60 kg)

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What is the formula for cumulative dosage for accutane treatment?

Maybe i can make it clearer than that last post . You want a cumulative dose of 120 mg. / kg. In your case at 109 lbs. or 50 kg. you want a cumulative dose of 50 kg. * 120 mg. = 6000 mg. . At your current dose of 60 mg. per day it would take 100 days to reach a cumulative dose of 6000 mg. Your doctor will probably keep you on accutane for 4 or 5 months. Most doctors like to aim for at least 150 mg. / kg. just to be sure.

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what about me i'm aout 160 lbs and i'm on 40 mg a day, in my second motnh i was on 40/80 every other day

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Thanks Carl Bell!

So, basically I am on the right dosage then. My doctor plans to have me on it for 5 months.

K

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Mac:

160lbs is 73 kg (rounded)

First, this is your first month:

40 mg * 30 days
------------------------ = 16.438 mg/kg/day
         73 kg
														
So, assuming you're now on a basically 60mg dose: To get 125mg/kg/day:
125 - 16.348 mg/kg/day = 60mg * X days
                                      ----------------------
                         73kg
														
Solving for X:
X = (125 - 16.348) * 73kg
      ------------------------------
                 60 mg
														

X = 132 days left (or 18 weeks)

You can adjust 125 to whatever you want.

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