Supplements

We don’t recommend using a Thorne product after its expiration date. Thorne conducts stability testing on our products, which ensures the potency of every ingredient at the product’s expiration date. Because of our stability testing program, Thorne can guarantee that its products meet 100 percent of the product's label claims up to the time of expiration. Although we don’t recommend using a product after its expiration date, it certainly won't harm you if you do use it. It doesn't mean the product has "gone bad" – it just means one or more of the ingredients might be at less than 100 percent potency.