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