I have been drinking this tea for 20 years. Lately I have started having heart palpitations every time I drink it. Found out it has Tilia, or Linden, flowers. It is known to cause heart damage if you are a long term drinker. There should be a warning on the table. The same for Twinings Calm tea. If you plan on using the tea long term, try pure chamomile.
Even though this product is readily available at the grocery store I chose to have it auto refill. Such a great tasting product, and really helps you chill in the evening. There are others but, Chesial has the best value for price.