side effect of glucosamine
Few side effects occur when treating a dog with glucosamine. With rare exceptions, they are mild and easy to treat. Mild side effects of glucosamine include vomiting, abnormal stool production (either diarrhea or constipation), and drowsiness, among others. Severe side effects include allergic reactions if the dog is allergic to shellfish, a blood-thinning effect if the glucosamine is paired with chondroitin, or heightened blood sugar levels. Symptoms of an allergic reaction may be as mild as the dog chewing at its feet or as severe as anaphylactic shock.