Isotretinoin
13-cis-retinoic acid (Roche Roaccutane). Gold standard for severe nodulocystic acne. FDA category X due to severe teratogenicity – iPLEDGE program mandatory.
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WHAT IS ISOTRETINOIN?
Detailed overview
Isotretinoin (Roche Roaccutane / Accutane, FDA 1982) is the gold-standard treatment for severe nodulocystic acne. 13-cis-retinoic acid (vitamin A metabolite) causes sebaceous gland atrophy, sebum production reduction, and P. acnes growth inhibition. EXTREME TERATOGENICITY (FDA category X) – every female patient must enroll in pregnancy prevention program (USA: iPLEDGE, EU: similar national programs). 2 negative pregnancy tests before start, 2 forms contraception mandatory, monthly testing. Layton 2009 (PMID 20436884) 6-month course produces sustained remission in ~80% of cases. Side effect profile SIGNIFICANT: dryness (mouth, eye, skin, lip), muscle pain, liver function disturbance, depression risk.
Data console
Lab data
Safety
Side effects, stop signs, contraindications
Side effects · 7
- Cheilitis and generalized mucocutaneous dryness in nearly all patients (~90%): chapped lips, dry nose (nosebleeds), dry eyes and skin.
- Psychiatric effects: low mood, depression, rarely suicidal ideation – an official FDA warning; any mood change must be reported immediately.
- Blood lipid rise: triglycerides and cholesterol can increase (rare pancreatitis risk), so monthly lipid panel monitoring is mandatory.
- Hepatic dysfunction: elevated ALT/AST transaminases, so regular liver-enzyme checks are required during the course.
- Musculoskeletal complaints: muscle and joint pain, back pain, especially with physical exertion; common during treatment.
- Increased photosensitivity and an initial acne flare (purging) early in the course, plus slower wound healing.
- Rare but serious: pseudotumor cerebri (benign intracranial hypertension) with persistent headache and visual disturbance, plus reduced night vision.
Contraindications · 3
- PREGNANCY (FDA category X – severe craniofacial, CV, CNS malformations)
- Childbearing age without contraception
- Hypervitaminosis A, severe hepatic disease
Related Pharmaceuticals
Same therapeutic category
Studies
Related research and clinical findings
Isotretinoin: state of the art treatment for acne vulgaris
Layton AM.
Association of inflammatory bowel disease incidence with isotretinoin usage: A meta-analysis and systematic review.
Ahmed A, Liaquat A, Raza S
Risk of Suicide and Psychiatric Disorders Among Isotretinoin Users: A Meta-Analysis.
Tan NKW, Tang A, MacAlevey NCYL
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Educational drug info from official sources (PubMed, FDA, EMA). Does NOT replace medical consultation or the SmPC. Talk to your doctor!
The information here is for educational and scientific purposes only. Medication use requires medical consultation and a prescription. The indications, dose ranges, and side effects listed here do NOT replace the official Summary of Product Characteristics (SmPC) or consultation with a physician. Do not start or stop any medication on your own. In an emergency, call your local emergency number.