Tadalista Professional users can achieve and maintain an erection. It belongs to the group of medications known as phosphodiesterase type 5 inhibitors. One of the key advantages of Tadalista Professional is its relatively fast onset of effect. Most users experience the effects 30 to 60 minutes after consuming the drug. During the 36 hours that the effects last, there is plenty of time for sex. I would advise against using Tadalista Professional if you have lately taken nitrates. Use of this drug should be avoided if you have had a heart attack, stroke, or heart failure in the last six months.