The mechanism of action of viagra triangle restaurants centers on its effects on the nitric oxide (NO) pathway. Nitric oxide is a naturally occurring compound in the body that plays a key role in the initiation and maintenance of an erection. During sexual stimulation, viagra vision changes NO is released in the corpus cavernosum, a cylindrical tissue in the penis. This compound relaxes smooth muscle tissue, allowing increased blood flow into the penis, leading to an erection. NO activates an enzyme called guanylate cyclase, which increases levels of cyclic guanosine monophosphate (cGMP).
However, it does not cause erections without sexual stimulation and is not an aphrodisiac or viagra walgreens price a hormone. The effectiveness of Viagra in treating ED is well-documented, with numerous studies indicating that it helps achieve and maintain an erection in approximately 70% of users. It is generally taken in a dosage of 25 to 100 mg, about one hour before sexual activity, and its effects can last up to four hours.
