October 01, 2021

Viagra safety

Sildenafil (Viagra) is an oral drug for erectile dysfunction that widens blood vessels in the penis, helping men who are sexually stimulated to get an erection.

To take sildenafil safely:

  • Avoid certain citrus — Don't take sildenafil with grapefruit or pomelo fruits or their juices. These may interact with the drug.
  • Don't take more than prescribed — This increases side effect risk. Take sildenafil only once a day. One dose can last four hours.
  • Avoid online scams — Never order drugs from an online pharmacy that doesn't have a working phone number, offers improbably low prices or doesn't require a prescription. Never take substances marketed as an "herbal" or nonprescription sildenafil equivalent.
  • Be wary with certain conditions — Sildenafil might be dangerous or need to be used carefully if you take nitrate drugs such as nitroglycerin (Nitro-Dur, Nitrostat, others), isosorbide mononitrate or isosorbide dinitrate (Isordil); have very low blood pressure (hypotension) or uncontrolled high blood pressure (hypertension); or have serious liver or kidney problems.
  • Note any side effects — Common ones include flushing, headache, stuffy nose and visual changes such as a blue tint to vision. These typically last only a few hours. Rare but more serious side effects — such as hearing and vision loss, or an erection that lasts more than four hours — require prompt medical care.
  • Care for your partner — Vaginal penetration can become painful for a female...