Vitamin D3 + Vitamin K2 Primidone
ModerateVitamin D3 (cholecalciferol) in the Vitamin D3 + Vitamin K2 combination is known to interact with primidone. The text doesn't say what the interaction does, so the exact effect isn't stated here.
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.