A paper that Rosacea News previewed in November last year: Accutane dose of 22mg a day works best: EADV has now been published in the JDDG: Journal of German Society of Dermatology.
As we learned from the EADV paper, the Spanish pharmaceutical company Almirall is hoping to promote their “branded version of isotretinoin in the treatment of rosacea.” It seems like a bold move; to attempt to market oral isotretinoin as an alternative to oral antibiotics.
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.”
For more information see what accutane dose works for rosacea ?
Systemic isotretinoin in the treatment of rosacea – doxycycline- and placebo-controlled, randomized clinical study. J Dtsch Dermatol Ges. 2010 Mar 12.
Authors: Gollnick H, Blume-Peytavi U, Szabó EL, Meyer KG, Hauptmann P, Popp G, Sebastian M, Zwingers T, Willers C, von der Weth R
Summary Background: Systemic isotretinoin has been known for decades to be effective in the treatment of severe forms of rosacea, but it must be used off-label because of the lack of evidence-based data.
Patients and Methods: 573 patients with rosacea subtype II and III received one of three different dosages of isotretinoin (0.1 mg, 0.3 mg, or 0.5 mg per kg body weight), doxycycline (100 mg daily for 14 days, then 50 mg daily) or placebo in a double-blinded, randomized way for 12 weeks in 35 German centers.
Results: Isotretinoin 0.3 mg/kg proved to be the most effective dose with significant superiority versus placebo. Isotretinoin 0.3 mg/kg showed also significant non-inferiority versus doxycycline with reduction of lesions of 90 % compared to 83 % with doxycycline. Investigators diagnosed complete remission in 24 % and marked improvement in further 57 % of patients with isotretinoin treatment, in contrast to remission in 14 % and marked improvement in 55 % of patients treated with doxycycline. Isotretinoin 0.3 mg/kg revealed a similar safety profile as for the treatment of acne. Isotretinoin 0.5 mg/kg showed more dermatitis facialis as compared to 0.3 mg/kg.
Conclusions: Isotretinoin 0.3 mg/kg is an effective and well-tolerated therapy option for the treatment of rosacea subtype II and III and can therefore be used successfully as an alternative to therapy with oral antibiotics.
