simply the best brand wise for this enzyme [SEP] i have tried other brands and so far none has worked as well for me as the twinlab brandyou have to try a product like this for yourself to know if it will work well for youthere is no getting around that facti am only offering a personal vouch for the product based on my experience with itif you have tried other brands with no success or poor results give this brand a shotanyone reviewing vitamins and supplements in a favorable way is basically saying it works for them or many of their patients a high star rating is something i typically look at when considering buying an item on amazonbut with this kind of product and pretty much all vitamins supplements you really need to try it yourself even if you see it has great reviews