All woman who are taking an enzyme-inducing drug (EID) (carbamazepine is an example of an EID) should be advised to use a reliable contraceptive that is unaffected by EIDs.

Examples of contraceptives that are unaffected by EIDs are:

• Copper intrauterine device
• Progesterone injection (Depo-provera)
• Mirena intrauterine system