Efavirenz

Author: Prof. Dr. med. Peter Altmeyer

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Last updated on: 22.08.2021

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Definition
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Virustatic. Non-nucleoside inhibitor of the reverse transcriptase of HIV.

Indication
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Antiretroviral combination therapy for the treatment of HIV-1 infection in patients > 3 years.

Pregnancy/nursing period
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Contraindicated in pregnancy (reproductive toxicity in animal tests, insufficient data available).

Dosage and method of use
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Adults/adolescents/children > 40 kg bw: 1 time/day 600 mg p.o. (in combination with protease inhibitors and/or nucleoside reverse transcriptase inhibitors (NRTI) of HIV.

Dose reduction in children > 3 yrs and patients < 40 kg bw: Pat. with 32.5-40 kg bw: 1 time/day 400 mg p.o., 25-32 kg bw: 1 time/day 350 mg p.o., 20-25 kg bw: 1 time/day 300 mg p.o., 15-20 kg bw: 1 time/day 250 mg p.o., 13-15 kg bw: 1 time/day 200 mg p.o.

Undesirable effects
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Gastrointestinal symptoms like nausea (5-10% of patients), headache (5%), dizziness (5-10%), fatigue (5%), cutaneous NW (10-15% of patients) like erythema, erythema exsudativum multiforme, erythema nodosum, urticaria.

Contraindication
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Patient with severe liver and kidney dysfunction (e.g. WHO group III-IV), children < 3 years. Comedication with rifampicin or CYP3A4 substrates such as terfenadine, St. John's wort, cisapride, pimozide, antidepressants (e.g. diazepam, midazolam, flurazepam) ergotamine derivatives, astemizole, etc.

Preparations
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Sustiva

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Last updated on: 22.08.2021