Evidence suggests this interaction might occur in some patients

Biotin

At least one good quality randomised, placebo-controlled trial or meta-analysis or systematic review

Evidence suggests this interaction is likely to occur in most patients

Calcium Vitamin D

Folic acid

Vitamin B12 (Cobalamin)

B - CarbamazepineLower quality human studyC - PhenobarbitalCase reportsA - PhenytoinAt least one good quality randomised, placebo-controlled trial or meta-analysis or systematic review

Carbamazepine Phenobarbital PhenytoinAntiepileptic drugs