It just aids in increasing blood flow if I remember right. I tried pump-tech when it first came out and it had fenugreek in it. I think it's a part of a tree or moss or something. Don't know if it's better, but if it's really cheap, give it a go. I never heard of it increasing libido. Have you tried yohimbe? Just let us know if it enhances your ability to 'scratch glass'.
