Tadalafil and sildenafil are the two most common treatments for erectile dysfunction. Both work well for most men, read more and both are sold as cheaper generics. The main question is often not which one is "better", but which one matches your plans.
Generic sildenafil is typically taken about an hour before sex and works for four to five hours. A heavy meal can slow it down. Tadalafil, on the other hand, can work for up to 36 hours, and food has little effect. Some men also take a low daily dose of tadalafil so they do not have to plan ahead.
For a side-by-side look, this practical guide walks through timing, food and side effects.
Before you start: never take either medicine with nitrate heart medicines or with "poppers". Let your doctor know about any other medicines you take. 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.
Strength matters too. The licensed doses are 25, 50 or 100 mg for sildenafil and 2.5 to 20 mg for tadalafil. Higher-strength tablets do not bring better results, but they do make side effects more likely. Stick to the dose on your prescription.
When you buy generic ED tablets online, make sure the strength matches your prescription and keep the leaflet. A valid prescription is required for every order of a prescription medicine. More practical tips are in this tadalafil and sildenafil guide.
This article is for general information only. Speak to your doctor or pharmacist before starting any medicine.