Glucosamine For Cats Side Effects. You should also be keen on any abnormal side effects and seek medical intervention as soon as possible in case you notice any. Studies are limited for this supplement however, and therefore information regarding side effects is also limited.
In fact, it’s scarce that you hear about dogs suffering from severe side effects. Glucosamine both supports the production of cartilage and protects it. Uncommon side effects are drowsiness, skin reactions, and headache.
Glucosamine sulfate can cause some mild side effects including nausea, heartburn, diarrhea, and constipation.
When applied to the skin: If your cat shows any of the signs listed above, contact your vet immediately. The side effects are more prominent if glucosamine is administered in high dosages. The most common side effect is diarrhea, vomiting, stomach upsets, and nausea.