Sildenafil and tadalafil are the two most common treatments for erectile dysfunction. Both work well for most men, and both are now available as lower-cost generics. The real question is usually not which one is "better", but which one suits the way you live.
Generic sildenafil is typically taken about an hour before sex and works for four to five hours. A high-fat meal can delay the effect. Tadalafil, on the other hand, can work for up to 36 hours, and food makes little difference. Some men also take a low daily dose of tadalafil so they never need to time a tablet.
For a side-by-side look, read the full guide here explains the differences step by step.
A few safety points: never take either medicine with nitrate tablets or sprays for chest pain or with "poppers". Tell your doctor about any alpha-blockers. The usual side effects are headache, flushing, a blocked nose and indigestion. Get urgent help for an erection lasting more than four hours or sudden changes in vision.
Do not chase higher strengths. 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 the risk of side effects. Stick to the dose on your prescription.
When you buy medicine online, check the strength on the pack and read the patient leaflet. A valid prescription is required for every order of a buy sildenafil online prescription medicine. You can read more in this tadalafil and sildenafil guide.
This article is for general information only. Speak to your doctor or pharmacist before starting any medicine.