We do not have clear proof yet about the effectiveness of available drugs to treat erectile dysfunction - Viagra, Levitra or Cialis and which among them has the least side-effects.
Issued by HHS' Agency for Healthcare Research and Quality, the report said that men who took oral phosphodiesterase type 5 inhibitors, also known as PDE-5 inhibitors, had improved erectile function as compared to those who did not take the medication.
However, head-to-head trials comparing Viagra, Levitra, and tadalafil Cialis were inconclusive as to which medication worked best.
The most common short-term side effects in men taking PDE-5 inhibitors were headache, flushing, abdominal pain, and runny nose.
Although the types of reactions varied with the drugs studied, there were no significant differences in side effects associated with either Viagra, Levitra, or Cialis.
Lead reviewer Dr. Alexander Tsertsvadze, of the AHRQ-supported University of Ottawa Evidence-based Practice Center, says that more studies are needed to clarify the best treatment management options for different groups of patients as well as more clinical trials to compare PDE-5 inhibitors to hormonal, injection, and creams or other topical treatments for erectile dysfunction.