Very pleased with this product; for both the Male enhancement response with Nitric-Oxide Boost, and for the healthy Blood flow affects. My honey takes one pill every morning to assist with cardiovascular and blood flow capabilities. This product encapsulates many of the single vitamins that he was taking daily, only now he only has to take the one vitamin. He takes just the one in the morning, and if the desire for intimacy arises in the evening, he can still take 3 to assist with blood flow and increased stamina (as 4 per day is the limit). We have tried many "all-natural" enhancement supplements, and this is BY FAR-the best for our unique needs!