Tadanova 80 mg is produced by Centurion Laboratories in India. It is a PDE-5 inhibitor used to treat severe cases of erectile dysfunction in men. This sexual enhancer is one of the few generic Viagra drugs approved by FDA for safe use. Tadanova 80 mg pills contains the active ingredient Tadalafil citrate. This chemical compound breaks the hormone cycle and hinders the breakdown of the cGMP cycle. This increases the level of testosterone in the blood. This process also has other advantages. It improves blood circulation and consequently the penis is rock-hard when sexually stimulated. The effect can last up to 36-48 hours, which is unprecedented in the field of sexual enhancers.