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It’s important to take sildenafil as advised by a doctor or pharmacist. Dosage and strength for erectile dysfunction. Sildenafil tablets for erectile dysfunction come in different strengths ranging from 25mg to 100mg. High-fat meals: Taking Viagra with a high-fat meal not only increases the time it takes for the drug to work but also decreases the concentration of Viagra in the bloodstream by 29%. Alcohol : As a depressant, alcohol slows blood circulation and the distribution of the drug throughout the body. On average, Viagra lasts between 2 and 3 hours before its effects start to diminish. Viagra can last up to 5 hours or longer depending on your dosage, your body s metabolism, and other external does viagra go bad In 2024, Pfizer, the maker of both Revatio and Viagra, sued Teva for patent infringement, or trying to introduce a generic version several years before Pfizer’s patent for Viagra was set to expire. Stop sexual activity and seek medical attention if you experience symptoms such as chest pain, dizziness, or nausea during sex, or if you have any side effect that bothers you or does not go away. Use protective measures to guard against sexually transmitted diseases, including the Human Immunodeficiency Virus (HIV). Frequently asked questions

Viagra can help men with erectile dysfunction (ED) get and maintain an erection, but there are side effects. Learn more about Viagra s effects on the body.

Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment viagra tablet 150 mg Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 inhibitors. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. This boosts blood flow and helps you get an erection from sexual activity. Sildenafil is a medicine that relaxes blood vessels and treats erectile dysfunction (Viagra) or pulmonary hypertension (Revatio). Learn about the warnings, interacti