A few years ago - I was experiencing severe heart palpitations. I believe that a major factor was my many years of heavy coffee and diet coke drinking. I began drinking half caf/half decaf most of the time - and finally just decaf. It didn't help! My doctor prescribed a med and I discovered Teeccino. Within the year - I was able to ween myself off the med (with doc's OK) and am pleased to be palpitation free! I love my Teeccino, especially Chai flavor - with steamed almond milk, a tad of Truvia and Agave sweetners - for a delicious healthy non-caffeine Latte! I can drink many cups a day without any problems. I tell everyone about Teeccino! Thank you!