Folive 6s-5-Methyltetrahydrofolate [Bio-Active Folate] Folic Acid
ModerateThe text only says that Folic Acid can work against the anticonvulsant action of phenytoin. It says nothing about 6s-5-Methyltetrahydrofolate [Bio-Active Folate] in this combination, so there is nothing more to add about taking the two together.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.