Viral infections:

Indications for: PIFELTRO

In combination with other antiretroviral agents for HIV-1 infection in antiretroviral treatment-naïve patients, or to replace the current antiretroviral regimen in virologically suppressed (HIV-1 RNA <50copies/mL) patients on a stable antiretroviral regimen with no history of treatment failure and no known substitutions associated with resistance to doravirine.

Adult Dosage:

≥18yrs: 100mg once daily. Concomitant rifabutin: 100mg twice daily (approx. 12hrs apart).

Children Dosage:

<18yrs: not established.

PIFELTRO Contraindications:

Concomitant strong CYP3A inducers (eg, carbamazepine, oxcarbazepine, phenobarbital, phenytoin, enzalutamide, rifampin, rifapentine, mitotane, St. John's wort): discontinue for ≥4wks prior to starting Pifeltro.

PIFELTRO Warnings/Precautions:

ESRD or dialysis: not studied. Severe hepatic impairment (Child-Pugh C): not studied. Elderly. Pregnancy. Nursing mothers: not recommended.

PIFELTRO Classification:

Non-nucleoside reverse transcriptase inhibitor.

PIFELTRO Interactions:

Concomitant efavirenz, etravirine, nevirapine: not recommended. May be antagonized by CYP3A inducers (see Contraindications). May be potentiated by CYP3A inhibitors.

Adverse Reactions:

Nausea, dizziness, headache, fatigue, diarrhea, abdominal pain, abnormal dreams; immune reconstitution syndrome.


To register pregnant patients to the Antiretroviral Pregnancy Registry, call (800) 258–4263.

Generic Drug Availability:


How Supplied: