As with so many things in life, if you don't ask the right questions, you won't get the right answers! The quality of ingredient can vary significantly and therefore the potency will do too. In addition, just because a product may be called pure it doesn't mean that it necessarily is. We recommend you read the ingredients and nutritionals on the label to better understand exactly what you are buying. We can assure you that our products are 100% pure. At TPW™, we are committed to transparency and openness in all our products and that is why we provide a Product Profile which gives a complete overview of ZMA®, including our approval, location of manufacture and money back guarantee applicability.
Scouring for more research studies highlights that there are mixed results with regard to testing ZMA on its effectiveness that boosting overall total and free testosterone levels in the body. One particular research study found that ZMA did have a positive influence on free testosterone levels in the body, however that research study was conducted by the manufacturer of a specific supplement containing ZMA. This research study was claimed to have been published in Medicine and Science in Sports and Exercise, but that was proven to not be the case.