"Buy Now, Pay Later" (BNPL) services like Affirm, Klarna, and Afterpay have become popular at supplement checkouts, allowing you to split the cost of your vitamins and health products into smaller installments. While this makes high-end wellness stacks feel more affordable, it essentially turns your supplements into a short-term loan. How BNPL for Supplements Works Buy Now, Pay Later: Who Uses It and Why