Sildenafil is the active ingredient in Viagra. Viagra is a brand 비아그라 효과 name for 비아그라 퀵배송 a medication that contains sildenafil. So, 비아그라 복용량 the main difference is that sildenafil is the generic name for 비아그라 복용량 the drug, while Viagra is a specific brand 비아그라 구매 of the drug.
Sildenafil is the active ingredient in Viagra. Viagra is a brand