This article was reviewed by Kelly Brown MD, MBA. If you’ve just started taking Cialis, don’t be alarmed if you feel a little off. Like other medications for the treatment of (ED), Cialis — and its ...

Viagra (sildenafil) and Cialis (tadalafil) are leading phosphodiesterase-5 (PDE5) inhibitors prescribed for erectile dysfunction (ED). Both enhance blood flow to the penis during sexual stimulation ...

Medically reviewed by Patricia Mikula, PharmD Key Takeaways Cialis lasts up to 36 hours, making it a long-acting option.Viagra works faster, with effects in 30 minutes, but lasts only about four hours ...

This side effect was most common in guys who took 10 to 20 milligrams of Cialis a day. Tadalafil Side Effects Long-Term There are no known long-term side effects of tadalafil. In fact, studies have ...