webber glucosamine chondroitin 500 mg/400 mg with vitamin d3 1000 iu, 300 easy swallow capsules luminira webber naturals is a leading canadian seller of glucosamine & chondroitin sulphate. offering the highest quality and exceptional pricing. b ingredients each capsule contains: glucosamine sulfate (potassium chloride from shrimp/crab exoskeleton).......500 mg chondroitin sulfate (sodium from bovine cartilage)................................................400 mg dosage 1 capsule, 3 times daily with meals or as directed by a health care practitioner. use for a minimum of 4 weeks to see beneficial effects. contraindications there have been no reports of any adverse drug interactions with glucosamine sulfate. the only caveat is that individuals taking diuretics may need to take higher dosages (e.g. 20 mg per kilogram [2.2 pounds] body weight daily).