There are MANY studies showing that 2-3 cups a day of tea made from Jamaican Cranberries greatly reduce hypertension. I am so grateful to Mary Mac for getting me this bag yesterday at Sanwa Farmer's Market. I'm drinking three cups a day the next month to see if it helps me too. I love the taste....this hibiscus (Hibiscus sabdariifa) is what gives Red Zinger its taste and color. This one pound bag was less than $5.