I took this product for several months to help with testosterone as well as lowering SHBG levels and I'm unsure if it has helped. Swanson seems like a reputable company and I don't want to say the product isn't good, but for me personally, it doesn't appear to have helped even when cycling the product two weeks on and one week off.
Edit: Swanson reached out to offer a full refund so I adjusted my review to four stars.