While other products may also use psyllium husk fiber, not all psyllium is created equal. Psyllium can vary in purity, granularity, swell volume, husk/seed ratio, absorption levels, etc. We have painstakingly tested dozens of different sources and varieties of psyllium to find the perfect balance of these variables to have the best effect on the human body. This has resulted in a ton of customers who have written reviews that they switched from other brands to Pinch and swear it far-and-away works better.