Is provillus for men strong enough to work? I think when many people hear that provillus is one of those kind of products that only has all-natural ingredients, then they probably feel it’s not strong enough to work. You see….most people are used to taking prescription medicine which has a ton of side effects and filled with a lot of toxic chemcials. It doesn’t have to be that way. You can get the results you want just with nature’s own bounty. What a world we live in? You could go outside and find a solution to a problem you already have.