Daily post-exposure prophylaxis (PEP) with single tablet emtricitabine/tenofovir/rilpivirine (Complera, Eviplera) has excellent completion rates and good side-effect and safety profiles, Australian investigators report in the online edition of Clinical Infectious Diseases.
The open-label, non-randomised study involved 100 men who have sex with men (MSM) requiring PEP after possible sexual exposure to HIV. Treatment lasted 28 days and was completed by 92% of participants. Side-effects were mild, the most common being nausea and tiredness. There were no serious adverse events.
Prompt PEP, after possible sexual or occupational exposure to HIV, can reduce the risk of infection. Guidelines recommend triple-drug therapy, ideally commenced within 72 hours of exposure. Failure of PEP has been linked to poor treatment adherence or the premature discontinuation of treatment. A recent analysis of 97 PEP studies found that only 57% of patients completed their four-week course of treatment.
The combination pill emtricitabine/tenofovir/rilpivirine provides well tolerated and easy-to-take once-daily HIV therapy. Though it must be taken with food, investigators from Australia hypothesised that the combination pill would provide convenient and safe PEP.