Here at Nutrition Geeks, making safe & high-quality supplements is one of our key priorities. When it comes to the quality of our ingredients, we exclusively source from highly reputable suppliers in the UK (all of whom are BRC or GMP accredited). Raw ingredients undergo batch testing for impurities and concentration levels before being formulated. Each product batch has a Certificate of Analysis which contains the specifications, microbiological and heavy metals test results. As a customer you will have full confidence the nutritional dosage information you see on the packaging is always accurate and the supplements are of the highest standard.