Bad Effects of Glucosamine

Glucosamine, also known as chitosamine, is a supplement that is used to relieve the symptoms of arthritis. Glucosamine, like many other supplements, has not been evaluated for safety by the U.S. Food & Drug Administration. Thus, there is no sure way to know that the vitamin supplement that you are consuming is safe and pure. While there may be advantages to taking glucosamine, there may be negative effects as well.

Allergic Reaction

• If you are sensitive to shellfish or have a shellfish or iodine allergy, you could have an allergic reaction to taking glucosamine. This is because it is made from the shells of shrimp and other shellfish. It's important to be careful because an allergic reaction to glucosamine could lead to your throat swelling up so much that you could have difficulty swallowing.

Gastrointestinal

• A rare but serious effect of glucosamine is gastrointestinal distress. Per the Mayo Clinic, this distress can present itself as nausea, diarrhea, heartburn and excessive flatulence. While gastrointestinal effects are not usually serious, they can be uncomfortable and even painful. If you suffer from these effects of glucosamine after the first two weeks, discontinue use.

Blood Sugar

• Glucosamine, which is a carbohydrate and is not converted into glucose, can have an effect upon your blood sugar. Thus, if you suffer from diabetes or other issues with blood sugar such as hypoglycemia, do not take glucosamine without first discussing it with your doctor.