Product Description
Viagra is an oral medication developed by Pfizer USA for the treatment of erectile dysfunction (ED). Its main ingredient is Sildenafil, with each tablet containing 100mg. Also known as Viagra, it is highly effective in treating erectile dysfunction and premature ejaculation symptoms.
Origin of Viagra:
Sildenafil was developed by Pfizer in its research center in Sandwich, Kent, UK. It was originally intended as a PDE5 inhibitor for treating cardiovascular diseases and entered clinical trials. Researchers hoped that Sildenafil could release nitric oxide to relax cardiovascular smooth muscles, thereby dilating blood vessels and alleviating cardiovascular conditions. However, the first clinical trial at Morriston Hospital in Swansea showed that Sildenafil did not meet expectations for cardiovascular effects, and its performance as a cardiovascular drug was disappointing, failing to become a successful treatment.
In April 1991, the clinical study of Sildenafil was officially declared a failure, but a side effect reported by trial participants caught researchers' attention. They found that patients who received the drug were reluctant to return the remaining doses. Upon investigation, it was discovered that the drug improved patients' sexual performance. With Pfizer's approval, researchers studied Sildenafil's effects on penile corpus cavernosum smooth muscle. It received FDA approval on March 27, 1998, and quickly achieved commercial success. In 2008, Pfizer earned $1.934 billion from this product, making it a blockbuster that boosted the company's reputation.
Mechanism of Action:
Viagra is an oral medication for treating male erectile dysfunction. It effectively promotes blood circulation in the male body, rapidly expanding the penile corpus cavernosum, leading to quick, firm, and thick erections. Over 85% of patients with erectile dysfunction report satisfaction with Viagra's effectiveness and improvement in sexual ability.
Suitable Users:
Adult males with decreased libido, weak erections, or impotence. After use, it quickly induces firm erections, enhances sexual quality, shortens the interval between sexual sessions, reduces fatigue, eliminates premature ejaculation, activates kidney function, and boosts testicular cell secretion.
Side Effects:
Viagra causes side effects in approximately 2.5% of users, including mild headache (16%), facial flushing (11%), decreased appetite (7%), and temporary visual disturbances (3%). The incidence of other serious complications is less than 2%.
Common adverse reactions include dizziness, nasal congestion, indigestion, and temporary visual abnormalities, such as difficulty distinguishing blue/green colors, increased light sensitivity, or blurred vision. These side effects are mostly due to related smooth muscle relaxation.
Dosage and Administration:
Avoid using other aphrodisiac medications simultaneously with Viagra. Each tablet contains 100mg. For first-time use, start with a low dose: 1/4 or 1/2 tablet, then adjust based on individual response. If ineffective after several uses, discontinue use.
[Name]: Viagra
[Ingredients]: Sildenafil 100mg per tablet
[Specifications]: 4 tablets per box / 30 tablets per bottle
[Shelf Life]: 3 years
[Manufacturer]: Pfizer USA
[Usage]: Take 1 tablet 1 hour before sexual activity.
[Precautions]: Avoid exceeding the recommended dose. Take once daily, one tablet at a time. Do not overdose. If a prolonged erection occurs, rinse the penis with cold water.






