Just like with Sight Power and Mag Plus, I don't want to live without GT-100. About 4 years ago I heard a testimonial on the radio show about how this product helped stop either racing heart problems or heart palpitations. I was having problems with on going small heart palpitations, and every once in a while my heart would race very badly. I would have to sit down during these episodes, and it was scary. It would usuallly eventually stop after taking a couple Mag Plus or a potassium. After starting to take GT-100, I rarely ever have palpitations, and have only had one major racing heart incident. This incident occurred when I was pushing myself too hard, hadn't eaten, hadn't slept enough, and it was hot out. I'm so grateful for this product so I don't have to take any medication, and I thank the Lord for it!