I have had glaucoma for over ten years and my pressure never went below 18 even with drops. After two months on bio algae my pressure dropped to 11 in one eye and 9 in the other. I have been using it for two years now and my doctor is thrilled. Also I had a bone density test a few months ago. My GYN could not believe the difference since the last one and asked me what I was taking. I am 68 and the figures were much better than hers.