National Discount Vitamins offers various payment options to accommodate its customers' preferences. Generally, they accept major credit cards, including Visa, MasterCard, American Express, and Discover. In addition, some online payment options may also be available, such as PayPal. This range of payment methods typically allows customers to select the most convenient option for their purchases. It is always a good idea to check the current web page for the latest updates on accepted payment methods, as these can change over time. If you are considering an order and have specific payment method questions, reviewing their website should provide the most accurate and current information.