Chondroitin Sulfate: Allergic reactions, alopecia, constipation, diarrhea, edema, (eyelid/lower limb), epigastric pain, extrasystoles, nausea.
Glucosamine Sulfate: Possible poor glycemic control in diabetics; monitor blood glucose, Increased intraocular pressure (see Cautions), Constipation, Diarrhea, Drowsiness, Headache, Heartburn, Hyperinsulinemia, Nausea, Skin reactions