What is the difference between viagra and cialis

Author: Vince  |  Category:
Looking for the better costs in discount meds? what is the difference between viagra and cialis.

"Viagra is a proven treatment and has been used successfully by millions over the years. Prescribed, the drugs generally work well. Sildenafil, vardenafil or tadalafil. Due to heart problems. Impotence, and the other medicines you are taking is having a negative effect on sexual performance and emotional well-being."