The first and foremost thing to note is that each of the products has to do with sex hormones. This is the main reason why you need to be cautious of the products that I review. There are other "natural" sex hormones available, like estradiol and progesterone, and they are just as good. It is also the reason that many people think that there is something wrong with sex hormones if they are used improperly. Some companies make it sound like the hormones can cause side effects, but in truth they only cause changes in body shape, and some people actually feel better after taking the hormones. The most important part of any sex hormones review is to be wary of the products that claim to "lower the sex drive." This is a completely different category than the one that is used for Viagra, for example. It does not make sense to use the same kind of hormones to help you lower your libido as to improve your sex drive. There is also an idea among some people that hormones are the reason why you have an erection. There is nothing wrong with having an erection, and it is not necessary to take hormonal medications.