I've bought Neurogan CBD products for several years. Their commitment to quality control is beyond stellar. I am retired from a lifetime of labwork and science matters to me. When they started making health supplements I was eager to try one of the new varieties. After some research, I chose to try Fisetin. My stomach can be a little iffy sometimes, but this supplement caused absolutely no issues. The capsules are not overly large and are easily swallowed. Like most supplements, the effects aren't drastic, more of a long-term maintenance supplement I am glad to add to my arsenal of self-care! Neurogan is the best. Highly recommended!