A 33-year-old woman on long-term phenobarbital for epilepsy uses DMPA injections every 13 weeks. She asks if DMPA is affected by phenobarbital. What i...

Question

A 33-year-old woman on long-term phenobarbital for epilepsy uses DMPA injections every 13 weeks. She asks if DMPA is affected by phenobarbital. What is the answer?

Accepted Answer

No, DMPA achieves high serum progestogen levels that are not significantly reduced by enzyme-inducing drugs; DMPA can be continued

Answer

Yes, DMPA efficacy is reduced; she should switch

Answer

She should have injections every 10 weeks instead

Answer

She should have a double dose of DMPA

Answer

Phenobarbital is not an enzyme inducer

uk-dfsrh MCQ (SBA): DMPA Not Affected by Phenobarbital

A 33-year-old woman on long-term phenobarbital for epilepsy uses DMPA injections every 13 weeks. She asks if DMPA is affected by phenobarbital. What is the answer?