For those who are having problems during adequate erection, start vidalista 20 immediately. This drug is a pill used for sex. Tadalafil is a phosphodiesterase type 5 (PDE5) inhibitor, which helps relax the muscles in the penile blood vessels, thereby increasing blood flow and improving erectile function. Take the medicine 1 hour or 30 minutes before engaging in sexual activity. Taking the medicine with more fruit or with heavy food takes time.