Viagra (sildenafil), 실데나필 비아그라 차이 a prescription medication that enhances the quality of erection, was first introduced onto the U.S.
market by Pfizer in 1998, becoming what wags described as the first purely recreational drug to gain approval from the FDA. The name "Viagra" is a portmanteau synthesized from "Niagara" and "vigorous", 비아그라 구매 사이트 intended to carry connotations of strength and energy. Viagra was originally marketed towards elderly and aging males as a treatment for 비아그라 구매 사이트 erectile dysfunction. The FDA had in 1997 lifted its long-standing prohibition of direct-to-consumer advertising of prescription drugs, and Pfizer took advantage of the new possibilities by running an initial advertising campaign featuring the endorsement of former U.S.
Senate majority leader, failed 1996 presidential candidate, 비아그라 사이트 and prostate cancer survivor Bob Dole.