I have been a customer since 2009 when Glucosamine.com were the only reputable supplier of ASU Forte that I could find. Since then I have purchased Arthro-5 and other products on a regular basis. I particularly like the care and transparency over purity, dosage and the supply chain generally. Only for one short period in the last 10 years has there been an issue with deliveries to the UK and the prompt, efficient and fair way they dealt with that minor hiccup was impressive. I highly recommend this company and their products.