Viapro is made by the Male Enhancement Research Center in the USA. Viapro is an all-natural herbal supplement, clinically tested, that enhances male sexual performance. Viapro contain a scientifically researched combination of powerful natural ingredients that produce long lasting, hard multiple erections, providing relief from premature ejaculation and boosting sexual arousal and stamina. Potent and effective, Viapro has no adverse side effects, and it works fast. You take a Viapro capsule 30 minutes before sexual intercourse and it lasts up to 24 hours.