Will antibiotics reduce the effect of Oral Contraceptive Pills?

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While some antibiotics do induce hepatic enzymes to decrease the efficacy of contraceptive pills, Amoxicillin is not one of them and can be safely used without the fear of contraceptive failure. However, it is important to stick to the contraceptive schedule. If you have taken Crisanta (Ethinyl estradiol) regularly without missing any pills, then you can rely on it completely.If you have missed a couple of pills or more, then it will be prudent to use a backup method like condom.Crisanta has to be used regularly as advised. There is no modification in the course or dosage necessary. No backup contraceptive required if you have not missed any pills in this cycle and have been taking Crisanta for more than one cycle.

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Please do not take Crisanta continuously as it will harm you by causing hormonal imbalance. Crisanta (Drospirenone and Ethinyl Estradiol) is a hormonal drug and too much of it will cause problems. You may opt for 23-7-21 days cycle. But again, do not make it a habit. Surely, you can opt 1 or 2 days of extra pill once in a while without any trouble. In any case, the pill free period should not be more than 7 days. Otherwise, the pills will not be effective for that cycle. I-pill used 2 hours before intercourse is enough and need not be repeated after intercourse if already taken before. However, the efficacy of I-pill is maximum when taken within 72 hours after intercourse and so this regimen should be adhered to whenever possible.