Tadalafil and sildenafil are the two most common treatments for erectile dysfunction. Both help most men who try them, and both are sold as lower-cost generics. The real question is usually not which one is "better", but which one matches your plans.
Sildenafil is normally taken about an hour before sex and works for four to five hours. A high-fat meal can slow it down. Generic tadalafil, on the other hand, can work for up to 36 hours, and food makes little difference. Many men also take a low daily dose of tadalafil so they never need to time a tablet.
If you want a simple comparison, see this plain-English guide walks through timing, food and side effects.
A few safety points: never take either medicine with nitrate heart medicines or with "poppers". Let your doctor know about any blood pressure tablets. The usual side effects are headache, flushing, a blocked nose and indigestion. Get urgent help for an erection lasting more than four hours or any sudden loss of sight or hearing.
More is not always better. The licensed doses are 25, 50 or 100 mg for sildenafil and 2.5 to 20 mg for tadalafil. Higher-strength tablets do not reliably work better, but they do raise generic tadalafil the risk of side effects. Stick to the dose on your prescription.
When you buy generic ED tablets online, make sure the strength matches your prescription and read the patient leaflet. A valid prescription is required for every order of a prescription medicine. You can read more in this article.
This article is for general information only. Always check with your doctor before starting a new medicine.