Hi there, thank you for posting your question. My area of expertise is in human sexual dysfunction. I hope I can be of some small help to you.
None of these things work. They are all completely bogus and a waste of time and money. More worrying is the fact that they can bring about erectile dysfunction by encouraging you to focus in on size when you should be thinking about pleasure and fulfillment.
Dr Andrew Rynne.
www.andrewrynne.com