My husband and I started taking berberine when our lab tests showed that both of our glucose levels were high. Berberine was recommended by my nutritionist to help get our levels down. We started taking this brand about two years ago, and made some small changes in our diet. According to our most recent lab tests, our levels went down. I buy this on a regular basis, and we take it every night after dinner with our other vitamins and minerals.
Nutricology's Berberine 500 is a very good product. I use it to assist in keeping my blood sugar in a healthy range and it is supposed to have heart heath benefits as well. The capsules are pretty big in size. I trust Nutricology's products for quality.