A physician tells the Huffington Post about the possible drug interactions with modafinil and birth control pills.

Like a lot of medications, modafinil is pregnancy category C, meaning animal studies have shown an adverse effect on the fetus and there are no adequate and well-controlled pregnancy outcome studies in humans. The potential benefits, though, may warrant use of the drug in pregnant women despite the potential harms [3]. Therefore, it is important for both health care providers and women taking modafinil to avoid unplanned pregnancies while on the drug and to make an informed choice of continuing treatment only if the benefits outweigh the risks.

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