Due to the mixed results regarding the efficiency and safety of testosterone supplements, the FDA has approved the usage of testosterone products, like injections, for replacement therapies and treatments only (10). Other forms of testosterone supplements, like powders and pills, are available in the market, but not regulated by the FDA. Beware of poor quality products making false claims, as they cause health damage. Thus, the use of testosterone boosting supplements in the form of pills and powders is legal to use, but you must exercise caution in choosing the right product as they are not regulated by the FDA.