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비아그라는 성관계 약 1시간 전에 복용하면 효과가 나타나기 시작합니다. 약효 지속 시간은 약 4~5시간입니다.비아그라 복용법비아그라 1정을 물과 함께 복용합니다.성관계를 가질 예정인 1시간 전에 복용합니다.하루에 한 번만 복용합니다.비아그라 복용 시 주의 사