Hi! No, hindi kailangan ng prescription para bumili ng evening primrose oil, available siya over-the-counter sa most pharmacies and health stores dito sa Pinas. Pero since you're asking, I'm guessing may specific reason ka ba for taking it (pregnancy, fertility, hormones?), mas better kung check mo muna with your OB or doctor kung okay talaga for your situation, kasi may conditions where it's not recommended.