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Contraception - Management
Drug interactions: what should be done?
- The efficacy of the ring may be reduced by liver enzyme-inducing drugs, and non-liver enzyme-inducing antibiotics (excluding amoxicillin and doxycycline which do not appear to be affected).
- If a woman is taking a liver enzyme-inducing drug, advise her to use additional barrier contraception for the duration of treatment and for 28 days after its discontinuation, or choose another method of contraception. If the drug treatment runs beyond the 3 weeks of her cycle, advise her to insert the next ring immediately without a ring-free week.
- If a woman is taking non-liver enzyme-inducing antibiotics (excluding amoxicillin and doxycycline), advise her to use additional barrier contraception for the duration of treatment and for 7 days after their discontinuation. If the drug treatment runs beyond the 3 weeks of her cycle, advise her to insert the next ring immediately without a ring-free week.
In depth
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