당신이 알아야 할 비아그라 지표
Speak to your medical doctor or seek crisis health-related attention If the erection is painful or lasts for a longer period than 4 several hours. A protracted erection (priapism) can harm the penis.For many medications, taking greater than the recommended dosage may possibly lead to undesirable Unintended effects or overdose. Don't use a lot more