NOW Foods

NOW Foods has been independently tested more times than any other supplement brand in North America, and the results are consistently boring in the best way — labels match contents, no surprise heavy metals, no fraudulent dosing. They aren't NSF Certified for Sport, so competitive athletes should look elsewhere, but for a household person taking magnesium glycinate or omega-3s, NOW gives you 70% of the quality at 30% of the price. The lab regularly publishes COAs on request, which says more than most premium brands' marketing.