Vigor Strike Men today use mainly two types of products. The machines usually termed as extenders or clinically developed medicines with proven results. Remember! Frequent doses of any product, however best the product is claimed to be, can result in complexities. No penis Vigor Strike enlargement product is supposed to be the best so it's recommended that you take the suggested amount of dose only. GPP has undergone various biological and clinical tests and found to be better than good when it comes to enlargement.