Black viagra pills Cenforce 200mg are an effective medication for the treatment of erectile dysfunction in men. It is an FDA-approved PDE5 inhibitor and consists of Sildenafil Citrate.
It selectively inhibits the effects of the phosphodiesterase enzyme -5 (PDE-5), causing penile muscles to relax and more blood to flow into them. The effects last for up to 4 hours.
How It Works