Glucosamine sulfate is still safe to use and only a small percentage of people will experience some adverse reactions.
A small number of people who use it for a long time may experience mild gastrointestinal discomfort, such as nausea, constipation, abdominal distension and diarrhea. Some people may experience allergic reactions, itchy skin, erythematous rashes and so on. Others may experience mild headache, fatigue, drowsiness, and visual disturbances, blurred vision, hair loss, and elevated blood sugar.
Side effects of Glucosamine Sulfate are rare and most people have no problems at all with its use. After using the drug for a period of time, if the above-mentioned adverse reactions occur, consult your doctor in time, take further measures and do not treat it on your own, so as to avoid delaying your condition.