This article was reviewed by Martin Miner, MD. Cialis, which contains the active ingredient tadalafil, is one of the most popular medications for ED. It belongs to a class of drugs known as ...

NEW YORK – The makers of long-lasting impotence treatment Cialis have added a new twist to the old free-sample gambit — they are offering dissatisfied patients the chance to try rival drugs for free.

Medically reviewed by Jamin Brahmbhatt, MD Key Takeaways Take Cialis at least two hours before sex for the best results.Avoid ...

You might have seen Cialis — the (ED) drug — available in doses ranging from 2.5 mg to 20 mg. Surely, more is better right? Well, not always. Cialis 20 mg is an effective ED treatment, but so are the ...