Interaction Checker
No Interaction Expected
Doravirine/Lamivudine/ Tenofovir-DF (DOR/3TC/TDF)
Etonogestrel (implant)
Quality of Evidence: Very Low
Summary:
No clinically significant effect on etonogestrel was observed with coadministration of doravirine, lamivudine and tenofovir. Etonogestrel is metabolized by CYP3A4. Doravirine does not inhibit or induce CYP enzymes and no effect is expected on etonogestrel exposure. This was confirmed in a pharmacokinetic study comparing etonogestrel Cmin of an etonogestrel implant when coadministered with doravirine, lamivudine, tenofovir-DF or a dolutegravir-containing regimen and which showed no significant differences in the GM Cmin of etonogestrel between the two ARV treatment groups. Lamivudine and tenofovir-DF do not interact with etonogestrel’s metabolic pathway.
Description:
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