What is the target cumulative isotretinoin dose?

Cumulative dose 120-150 mg/kg minimizes relapse risk; standard dosing 0.5-1 mg/kg/day for 5-6 months achieves this; lower starting doses (0.1-0.25 mg/kg/day) are used to reduce initial flare in severe nodular acne.

What laboratory monitoring is required on isotretinoin?

Baseline and monthly: fasting lipids (triglycerides often elevated 100-200 mg/dL), LFTs (hepatitis rare but monitored), CBC; reduce dose or stop if TG >500 mg/dL (pancreatitis risk) or ALT >2x ULN.

What teratogenic risk requires iPLEDGE registration?

Isotretinoin causes severe fetal malformations (CNS, cardiac, craniofacial); pregnancy category X; requires two negative pregnancy tests before treatment; two forms of contraception during and 1 month after treatment; monthly negative test required.

What acne severity warrants isotretinoin?

Isotretinoin indicated for: severe nodular/cystic acne; moderate acne unresponsive to oral antibiotics + topicals for 3-6 months; acne causing significant scarring; acne causing significant psychosocial impact; immediate use for severe nodulocystic flares.

What psychiatric side effects require monitoring with isotretinoin?

Depression and suicidal ideation are reported; causal relationship debated in controlled studies but post-marketing reports are numerous; baseline mood assessment; patient and family counseling; discontinue if significant mood change occurs.

Isotretinoin Cumulative Dose and Monitoring Calculator

Calculates isotretinoin cumulative target dose (120-150 mg/kg) for severe nodular acne treatment, monthly CBC/lipid/LFT monitoring schedule, and iPLEDGE pregnancy prevention program compliance requirements.

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Isotretinoin Cumulative Dose and Monitoring Calculator

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Frequently Asked Questions

What is the target cumulative isotretinoin dose?

What laboratory monitoring is required on isotretinoin?

What teratogenic risk requires iPLEDGE registration?

What acne severity warrants isotretinoin?

What psychiatric side effects require monitoring with isotretinoin?