A typical full dose of Accutane (isotretinoin) is 40-50mg per day and the typical length of treatment is 15-20 weeks in order to achieve the recommended cumulative dose of 120mg/kg of bodyweight over the course of a cycle. However, as the years go on, researchers have been conducting more studies on low-dose Accutane (isotreinoin) to see if they can get the same results with less side effects. Generally speaking, the research is showing that even at a low dose of 20mg per day, people see good results, albeit not as impressive as when the full dose is used, and also with a higher incidence of relapse.
However, one recent study published in Advanced Biomedical Research is particularly interesting. In this study, they gave patients a low dose of 20mg per day but kept the patients on this low dose for quite a long time (10-22 months) in order to achieve the usual recommended cumulative dose of 120mg/kg of bodyweight. 96.4% of patients “demonstrated complete clearing of their acne, defined as no acne or occasional isolated lesions.” Relapse was low as well. “In a 5-year follow-up, relapse accrued in…7.9% of patients.” Side effects were, “…mild, and only 6 patients (out of 146) discontinued study medication because of severe adverse events.”
This is the first study where patients receive a low dose of isotretinoin, but are kept on this dose until the cumulative dose reaches the full 120mg/kg. Results from this study look impressive, and relapse rates are low. The authors admit, however, “The only pitfall is it is longer than 10 months duration of treatment period.”
Perhaps it is time to take a second look at how Accutane (isotretinoin) is administered.
- Rasi A, et al. “Efficacy of fixed daily 20mg of isotretinoin in moderate to severe scar prone acne.” Advanced Biomedical Research. 2014; 3: 103.