What is the shelf life of dietary supplements?
Generally, the shelf life for most dietary supplements is two to three years. Supplements do decrease in potency after two to three years if unopened and a year after opening. A word about expiration dates: The expiration date is only a way of measuring the potency of the product. The longer the product stays on the shelf, the less potent it is. Thus, becoming less effective. The stories you hear about getting sick if you take expired herbal supplements is not true. This is a scare tactic used by advertisers to get you to buy new product.
