Perskindole has a local effect, it is absorbed into the general circulation in a negligible amount, therefore it does not interact with drugs taken orally. It will not reduce the effectiveness of hormonal contraception.
The preparation contains essential oils, so when applied to a large area of the body, you can get the impression that it "evaporates" into the mouth. However, this does not affect the effectiveness of the contraception you are using in any way. Protection is maintained. Subsequent tablets should be taken in the same way as before. Do not shorten the bleeding interval, etc.

I'm attaching a link to a helpful post:

https://www.gdziepolek.pl/artykuly/jakie-leki-oslabiaja-skutecznosc-antykoncepcji

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