Are There Side Effects Using Glucosamine for Dogs?

 Glucosamine is a natural component of human cartilage, a natural substance that is found in healthy cartilage, and the glucosamine side effects in dogs are very important to recognize. Typically the only time glucosamine is offered to dogs is for the treatment of canine arthritis. If you notice your dog is experiencing a difficulty walking or general lethargy, they may be suffering from dog's arthritis problems.

This condition is not rare in dogs. In fact, up to 30& of all dogs and cats have this problem. Other symptoms that indicate your dog requires glucosamine include falling behind you on walks, adverse reaction to playing or walking, limping, signs of pain and aversive to any contacts. If you notice your dog exhibiting any of these symptoms, you should get them in to see the veterinarian as soon as possible. They will perform a few routine tests to determine whether this is the cause of their symptoms.

Pets do have a very high pain threshold, but still may require treatment in order to deal with their condition and most importantly, relieve the pain and discomfort caused by their symptoms. When the pain becomes so unbearable and starts to diminish their overall quality of life, they may be prescribed glucosamine.

What it is?

Also used in humans for treating arthritis, this works to rehabilitate and sooth the dog’s joints, allowing them to walk more comfortably without the pain and discomfort symptoms. It works by getting absorbed and distributed to the joint tissues in the dog’s body, offering anti-inflammatory and joint regenerating properties. The great thing about glucosamine is that it can start to work almost immediately. Within just a few days after starting your dog on the substance, you should notice an improvement in their overall condition.

There are various different products available containing glucosamine, any of which your vet may prescribe for your dog. They take your pet’s pain relief and health into consideration, treating animals on a case by case basis. Just like humans, each dog is different and their condition must be considered separately. Your vet will consider your dog’s specific situation in order to determine which glucosamine product stands to offer them the best results.

Side Effects in Dogs

Unfortunately, although glucosamine is very helpful in most cases at treating arthritis in dogs and helping to lessen the symptoms associated with the condition, it can cause certain unwanted side effects. That includes headache, drowsiness, swollen eyelids, poor appetite, vomiting, heartburn, bloating, softening of the stool, and insomnia.

The problem with glucosamine side effects in dogs is that it can often be difficult to determine when a dog is experiencing any of the symptoms. Unlike with a person, who could simply tell you if anything is wrong, it can be hard to determine this in your dog. After starting them on any glucosamine product, it is important to watch their behavior carefully, to make it easier on yourself to determine if they start acting strangely.

These types of side effects are common and should not be any problem. However, if your dog starts acting like their symptoms are worsening or there are otherwise specific issues you feel may have become a problem, you should speak to your vet immediately. They will be able to examine your dog and make sure they are healthy. More severe side effects can include anything from a decrease of the metabolic actions of insulin and high heart rate to elevated blood pressure and heart palpitations. You may notice your dog starting to walk shaky or they act fatigued.

It is important to never wait if you think your dog is acting strangely. They could be responding negatively to the glucosamine and may even need to be taken off of it. As a dog owner, you should not be especially worried about giving your dog a glucosamine product, as the side effects are rare. In most cases, even if there are any side effects experienced, they are very minimal and should not cause a problem in your dog’s behavior or health. Although there have been some dramatic experiences using glucosamine in drugs, this is very rare and not something to be worried about. Keep a close eye on your dog. You know them better than anyone and are the best person for determining whether they are acting the same or if something is wrong.

Although the percentage of dogs that experience any of these unwanted side effects is very small, at around 1 to 2%, the fact that these side effects are even a possibility makes them worth taking note of. You want to do the very best for your dog, and that means being aware of what you are putting in their body. Although the benefits of the glucosamine products are worth it in most cases, you need to know what to expect and in particular that means being aware of what side effects your dog may start to exhibit. Talk more to your veterinarian before putting them on any glucosamine product if you are unsure want to find out more. They can give you a more personalized report about the product prescribed for your dog and what side effects if any you should expect. In many cases, it does require a certain trial and error process with different products to see what works best to relieve your dog’s arthritis symptoms.

Once you are aware of the glucosamine side effects in dogs, you can more easily determine whether your dog is exhibiting any of the symptoms.  It is always best to be prepared, and know how to spot what is normal and what is not. If your dog is reacting adversely to the glucosamine product, you may want to talk to your vet and see if things are okay. They may lessen the dosage or otherwise find another treatment to help deal with their arthritis condition. In most cases, glucosamine is very effective at treating arthritis conditions in dogs and can help your dog too. The glucosamine side effects are nothing to be worried about, and in most situations, the benefits far outweigh the risks.


  1. My senior dog has arthritis and according to his exotic animal vet we should try the other treatment for his arthritis if its work and I'm happy because our dog doesn't need to take the glucosamine and never get worried for the side effect on it.

  2. It was really insightful.
    Thanks for such a nice content.
    BTW if anyone interested more have a look petcareio thanks

  3. If you want to know more side effect about Glucosamine and Chondroitin Supplement. Go to

  4. Thank you for sharing this and also your video. We went to animal hospital and the vet of my senior dogs prescribe this medicine, I saw some reviews for this medicine and I started to get worried.

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