It has two components. While Rifampicin and Rifabutin (and Penicillin,Amoxi and a few others) are directly showing effects on the contraceptives drugs effects, there is another factor that shouldn’t be underestimated:
ABs can and will cause digestive symptoms, fastening gastric passage and that alone is known to reduce the effectiveness of hormonal contraceptives countless times.
It has two components. While Rifampicin and Rifabutin (and Penicillin,Amoxi and a few others) are directly showing effects on the contraceptives drugs effects, there is another factor that shouldn’t be underestimated: ABs can and will cause digestive symptoms, fastening gastric passage and that alone is known to reduce the effectiveness of hormonal contraceptives countless times.
That is true. I didn’t think of it from that angle. I haven’t read too much into that. But now I will. Thanks for the info.
For the record, always use secondary contraception if you’re in doubt. I should have said that in my first post.