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Does Glucosamine for Dogs Come With Any Side Effects?

Feb 11, 2019

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As a well-informed dog parent, you must already have heard about glucosamine.

Glucosamine is the wonder compound that is used for treating hip and joint related problems in dogs. Not only does it help to promote cartilage generation, but it also acts as a building block for many other functional molecules essential for a dog’s health.

Now, glucosamine is naturally produced by a dog’s system, but with increasing age, the rate of glucosamine production often lessens. This is when we need to administer it externally, using supplements that are available over the counter.

Although potentially safe, is there any possibility of undesirable side-effects on your pet’s health? Let us find out.


What are the possible side-effects of glucosamine?

Glucosamine supplements although very effective in curing bone and joint disorders like osteoarthritis and osteoporosis, are known to have a few side-effects too.

Some dog parents have reported glucosamine side effects which include -

  • fatigue
  • insomnia
  • excessive thirst and urination
  • diarrhea
  • constipation
  • allergies

Most common side effects which are usually minor cause give rise to gastrointestinal troubles. If you notice a certain change in its feces production, then reduce the dosage or mix feed the supplement along with dog food. You will have to remember that these symptoms are common and if you suddenly withdraw the product, the symptoms would be more intense. Once you have started feeding glucosamine to your dog you will have to incorporate it into their diet for a prolonged duration to see satisfactory results.

Health warnings

If your dog has diabetes of any type (type-I or type-II) then take notes that this supplement can raise their blood sugar levels because it contains glucose.

If you are taking some other supplements and considering about consuming glucosamine then it is advisable to check whether the supplement you are already taking has skullcap in it. Glucosamine, when taken along with an herbal supplement containing skullcap, increases the chances of liver damage.

Glucosamine is known to thin blood leading to bleeding. So if your dog is on a medication which thins blood then you might consider taking the opinion of the vet before feeding the supplement to your pet.

Shellfish infections are very common in dogs so check whether your pooch is allergic to it. If yes, then you might not feed glucosamine supplement to your loving friend. If you see your dog continuously chewing its feet, then get the clue, they are allergic to shellfish.


What is the typical dosage that you should follow?

In case you are planning to use glucosamine supplements for your pooch, you must first know the correct dosage, so that there are no unexpected glucosamine side effects.

You can also follow the dosage guidelines enlisted in the package of the product. However, it is always advisable to consult an expert vet, and then feed it to your doggo exactly according to the prescription.



After buying the supplement make sure to store it at room temperature away from heat and moisture to retain its shelf life. And in case the health conditions don’t improve or turn worse, promptly contact the doctor.