• GLCOSAMINE MSM SUPPLEMENT: At Doctor's Best, we value beauty and flexibility. Specially formulated to seamlessly blend potassium glucosamine hydrochloride sulfate, MSM and vitamin C • Enhanced Flexibility and Mobility: This nutritional supplement for women and men combines joint comfort and flexibility with synergistic ingredients to promote an active lifestyle • HAIR, SKIN & NAIL SUPPORT: OptiMSM and Doctor Best synergistic glucosamine MSM formula supports vibrant hair, skin and overall health • RECOMMENDED ADULT USE: Take 3 capsules twice a day with food, or as directed by a nutritional physician. Our joint health support supplements are non-GMO, gluten free, and soy free • Doctor Best: Good nutrition starts with healthy science. For over 35 years, we have been dedicated to providing only supplements thoroughly researched, rigorously tested, and clinically approved