Generic Viagra is a drug for oral implementation used in patients with erectile dysfunction. Generic Viagra contains sildenafil that allows have unlimited number of erections starting an hour after the intake and during the ensuing 4 hours.
Cialis is an oral drug used in patients with male impotence. Cialis has tadalafil for its main medicinal agent. The drug revives natural ability to respond to sexual stimulation with erection during the period of 36 hours. Cialis is taken as needed.
Kamagra is an oral drug against erectile dysfunction. Kamagra is a full analogue of Viagra, containing the same main component, sildenafil. Kamagra pills help to achieve and maintain erection during the period of 4 hours starting 60 minutes after the taking.
Levitra is an oral drug against the symptoms of erectile dysfunction. The drug’s basic component is vardenafil, the medicine that helps to achieve and maintain erection for as long as it takes to accomplish a valid sexual act and to have sexual recharges if needed.