I've used every digestive enzyme and probiotic you can name for the past twenty years. When you listen to Dr. Wong, you'll want Vitalzyme. Info for fibromyalgia and so so much more. I have several biofeedback devices that check frequency and more people test across the board positive than anything else in my ofice. And I have products from dozens of nutritional and anti aging companies. I have never seen any product be so positive for so many meridians on so many people.