INNOVATIVE SOLUTIONS, BACKED BY EXPERTS: Healthspan has 25 years' experience working closely with trusted research partners and experts. They thoroughly test and perfect their products with in-house doctors and nutritionists to bring you the latest developments in nutritional supplements. QUALITY INGREDIENTS FIRST: Healthspan work harder to seek out the best-quality ingredients for their supplements. They source and manufacture their range, ensuring optimal purity and quality along the way so whether it is faster-acting, better-absorbed, filtered for optimal purity or simply contains more active ingredients, they're confident you won't find better quality. GLUCOSAGREEN: Healthspan’s glucosamine is produced in an environmentally friendly process using purely plant-based materials and produces only around 2% of the waste of a shellfish-based process. Derived from an easily available vegetable source: non-GMO corn, it is safe for vegans and anyone with an allergy to shellfish. Healthspan are able to produce the same high-quality glucosamine as shellfish glucosamine without damaging the environment. WHY CHOOSE HEALTHSPAN'S OPTIFLEXI GLUCOSAMINE HCI? Healthspan’s Glucosamine HCI tablets are made from a sustainable and natural vegan corn-based source which are free of shellfish. They contain 40% more actual glucosamine per gram than standard glucosamine sulphate (2KCl). Vitamin C has also been added to support your joint and cartilage health. WHAT IS GLUCOSAMINE? Glucosamine is found naturally in the human body, where it acts as a building block for the proteins that make joint cartilage. Many standard glucosamine supplements are sourced from the shells of crustaceans, and therefore not suitable for vegetarians or vegans, or those with a shellfish allergy.