Please be sure you are looking at the product that is right for you. I am not a health expert. The following information is based on the experiences of my own doctor and a knowledgeable friend.
Most testosterone products don't contain any testosterone. Most of the products are "synthetic" (not natural) testosterone. They contain testosterone and many other synthetic and synthetic-derived hormones. The most common synthetic testosterone is Testosto, and the most common artificial testosterone is Cervarix. All of these products are different, so if you don't know exactly what you are buying, it's best to ask your doctor about the product. Testosterone supplements are usually made from one of three ingredients: testosterone-based, synthetic or natural. The only reason you might be buying any testosterone product is that your doctor gave you an order for it. They may have been given information about the hormones that the product contains, or they may just be asking you a question. If you are unsure about your order, don't sign the delivery letter or you risk having your hormones sent back to your lab or having them cut out of your body by the company that made the supplement. Some people don't want to be asked questions by their doctor, but you should make sure your doctor understands that testosterone supplements are not the same thing as hormones.