A summary from a the recent 18th Congress of the European Academy of Dermatology and Venereology has presented some findings relating to the most effect dosage of accutane to treat rosacea.
Accutane (Isotretinoin) has been successfully prescribed in low doses to treat rosacea, and especially the `lumps and bumps’ of rosacea that have not responded to other treatments.
Despite some good published papers that deal with treating rosacea with low doses of accutane, officially isotretinoin needs to be prescribed `off label’ for treating rosacea.
For those enrolled in this blind study, 0.3 mg/kg per day was found to be as effective as 50mg a day of doxycycline at treating the papules, pustules and phymatous growth of rosacea.
Getting the dose right is important if you want to try Isotretinoin as a treatment for your troublesome rosacea. How do you know if you are taking too much ? A high dose of accutane can lead to unpleasant side effects and even worsen the flushing associated with rosacea.
If you consider an average weight of 166 pounds (around 75kg) this paper would lead to a recommended dosage of around 22mg a day. Even this amount may be viewed as moderate to high when compared to advice from Dr. Plewig that “doses of isotretinoin typically used in the United States and Europe are far too high. For many patients, as little as 2.5 mg twice a week, which he describes as `a drop of rain on a dusty road’ is adequate.”
Dr. Erdogan et.al. suggested that “In our small group, using a daily dose of 10 mg of isotretinoin, we did not observe such adverse effects. Although we selected patients resistant to treatment with a long history of complaints, our results confirmed the efficacy of isotretinoin use, but whether remissions will continue after the cessation of treatment is not addressed by our study.”
Further, advice from Dr. Hofer suggests doses of around 3mg to 8mg in what he calls his continuous microdose regime are suitable for treating rosacea. In 2000, Palmer et al. showed that continuous microdose isotretinoin (CMI) treatment (0.04-0.11 mg/kg daily) was sufficient to control adult relapsing acne, but they mentioned that this is an unlicensed method administration.
This paper will hopefully give some weight to the argument that under controlled circumstances, in the right doses, and for the indicated rosacea symptoms, low dose accutane can be a viable treatment.
If indeed this research helps lead to accutane being available as an on-label prescription for rosacea sufferers, then that is good news especially for those desperate for relief from the recalcitrant lumps and bumps of rosacea.
Optimal Isotretinoin Dosing for Rosacea Identified
BERLIN (EGMN)–Isotretinoin could be headed for a new indication as a licensed treatment for rosacea.
The workhorse oral retinoid has been used off label to treat challenging cases of rosacea for more than 2 decades. However, Barcelona-based Almirall recently sponsored a successful multicenter randomized trial aimed at earning an indication from regulatory authorities for its branded version of isotretinoin in the treatment of rosacea, Dr. Harald Gollnick said at the annual congress of the European Academy of Dermatology and Venereology.
The double-blind, 12-week study involved 224 patients with the papulopustular or phymatous forms of rosacea. Participants in the five-armed trial were randomized to isotretinoin at 0.1, 0.3, or 0.5 mg/kg per day; doxycycline at 100 mg per day followed by 50 mg per day; or placebo, explained Dr. Gollnick, professor of dermatology at Otto-von-Guericke University, Magdeburg, Germany, and president of the European Board of Dermato-Venereology.
The optimal isotretinoin dose proved to be 0.3 mg/kg per day. Its efficacy was superior to placebo and similar to that of doxycycline, with both regimens achieving a 90% reduction in papules and pustules at 12 weeks, according to Dr. Gollnick, who is also chairman of the Global Alliance to Improve Outcomes in Acne, an international group of acne experts.
“That means in the near future we’ll most probably have an on-label indication for isotretinoin in rosacea,” he said.
Over the years isotretinoin has been used off label to treat rosacea, but the best dose was a matter of guesswork. The Almirall-sponsored trial is particularly welcome because it is the first formal study aimed at defining the optimal dose, added Dr. Gollnick.
The 0.3 mg/kg dose was associated with a low rate of side effects, consisting mainly of mild lipid changes and liver enzyme elevations. The 0.5 mg/kg dose wasn’t any more effective, and it produced more irritation and facial dermatitis. The 0.1 mg/kg dose, while significantly better than placebo, was less effective than 0.3 mg/kg.
Topical therapies for rosacea include 0.5%-2% metronidazole, azelaic acid, 0.025% tretinoin, and 2.5%-5% permethrin. Systemic treatments include metronidazole at 500 mg/day, minocycline at 50 mg/day, tetracyclines at 0.5-1.5 g/day, and a subantimicrobial formulation of doxycycline.
Over to You
What dose of accutane have you found to work best for you ?
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