Viagra is the brand name for sildenafil, a medication primarily used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis during sexual stimulation, helping achieve and maintain an erection.

Here are some key points:

• How it works: Viagra inhibits an enzyme called PDE5, which helps relax blood vessels and improve blood flow.

• Dosage: Usually taken 30 minutes to 1 hour before sexual activity, and it’s effective for up to 4 hours.

• Common side effects: Headache, flushing, indigestion, nasal congestion, and dizziness.

• Important warnings:

  • Don’t take it with nitrates (used for heart conditions), as it can cause a dangerous drop in blood pressure.

  • Should not be used more than once a day.

  • Not recommended for people with certain heart conditions unless approved by a doctor.

Would you like information on alternatives, how it compares to other ED treatments, or how to get it