I would focus on finding brands to trust vs stores. Stores do absolutely zero diligence on ingredients of supplements. https://www.foodsafetynews.com/2015/02/m

I would focus on finding brands to trust vs stores. Stores do absolutely zero diligence on ingredients of supplements. https://www.foodsafetynews.com/2015/02/major-retailers-ordered-to-stop-selling-adulterated-and-mislabeled-supplements/ https://www.foodsafetynews.com/2015/02/major-retailers-order... > Three to four samples of each supplement purchased in different parts of the state were tested. Each sample was tested five times, for a total of 390 tests on 78 samples. Schneiderman said that only 4 percent of Walmart’s supplements (“Spring Valley” brand) actually contained the ingredients listed on the label, while 18 percent did at Walgreens (“Finest Nutrition” brand), 22 percent at GNC (“Herbal Plus” brand), and 41 percent at Target stores (“Up & Up” brand).