Vidalista 20mg tablet is manufactured in Centurion Laboratories in India. This drug is an effective medicine for the treatment of men suffering from erectile dysfunction. An active ingredient called tadalafil is found in vidalista 20. The effect of this drug lasts for 36 hours. This is called a very long time. Do not take vidalista tablet more than once a day. As well as not taking this drug with heavy foods like alcohol as it reduces the effect of this drug.