We are the only company offering proof that our nutrition supplements work. Simply contact one of our recommended labs, or have your doctor assist you, and test your nutrient levels before you take the product, and then re-test 30 days later. If you don’t see an improvement, we’ll refund you and buy you one of our competitor’s products. That’s how confident we are in our products. Call us at 800-975-9606 and we’ll recommend nutrient panels you can discuss with your doctor. Or review your local Quest Diagnostics or LabCorp test panels.