Puritan's Pride: Buy 1, Get 1 Free, Extra 20% off, or Buy 2, Get 3 Free

Through 11/6, buy 1 and get 1 for free or get an extra 20% off, or buy 2, and get 3 free on select products at Puritan's Pride. Discount applied at checkout. Must be same item, same size on Puritan's Pride brand products.