Is your dog not eating after deworming? The deworming process can cause nausea, vomiting, drooling, and even a lack of appetite. It is a commonplace for your pet to lose its appetite after deworming.

However, it does not last for long. Suppose your pet has no appetite after 24 hours; you should consult your veterinary doctor, as that is abnormal.

The majority of worming treatments are unlikely to induce a lack of appetite. However, an exception could be if your pet had many roundworms.

Roundworms killed by the medication would try to pass through the intestines, making your pet nauseous. Deworming can cause a lack of appetite in your dog as expelling the worms from its system can imbalance your pet’s system. As with any medication a human or an animal takes, it is likely to have an adverse effect.

Deworming can cause a lack of appetite or nausea in your pet. There are several deworming drugs for your pet. You can get it via your vet’s prescription or over the counter at a veterinary store.

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Some deworming drugs dissolve the worms in the dog’s intestinal system, while others paralyze them. The paralyzed worms will separate themselves from the intestinal tissue. Sometimes, you will find worms in the dog’s vomit or faeces.

Side Effects of Deworming A Dog

dog not eating after deworming
Dog ignoring food – image by Ayla Verschueren

Dog Not Eating After Deworming Could Cause A Lack Of Appetite

An upset stomach will cause your puppy to lose its appetite after receiving the medication. It could have a hurting or upset stomach even if it is not sick or does not have diarrhoea.

Your puppy would experience an inflammation of the stomach wall and the intestine lining if all of the parasites were to die in your dog’s intestines. However, you have little cause to worry; most puppies’ lack of appetite is temporary and does not last more than 24 hours on average.

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Deworming drugs might cause your dog to drool excessively, whether it drools a lot or not. When your dog’s stomach is disturbed, it will drool and flip its stomach. Similar to how a human’s saliva glands react to the sensation of nausea.

Suppose your puppy already drools before deworming. You may notice it drool even more after you give it the deworming medication. This slobbering suggests it loses fluids, leading to dehydration if it doesn’t drink more water.


Because some of the medications used in worming tablets react with your dog’s stomach acids, he may experience nausea shortly after taking the pill. To get rid of the medicine, he might vomit.

It may still experience nausea after being given the medications if they are not in tablet form. The sickness is because the drug causes the worms to produce toxins as they die. As a result, the body reacts and expels them through vomiting.

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When your puppy is unwell, keep an eye on him. Not only to keep him secure but also to check if the tablet has resurfaced. If that’s the case, you’ll need to talk to your veterinarian about getting another round of deworming therapy.

Diarrhoea Could A Be Side Effect Of Deworming A Dog

Intestinal worms are the most prevalent type of worm in puppies, and they attach to the intestine and absorb nutrients from the food as it goes through.

When you administer the medication to your pet and the worms die, they fill the intestine, causing the body to flush them out with the extra liquid.

Although deworming can cause a lack of appetite in your pet, diarrhoea is one of the most prevalent side effects of deworming young dogs. For your pup to get rid of the dead worms, its body will pass a lot of excrement.

Types Of Worms Prevalent Among Dogs

Roundworms, tapeworms, hookworms, whipworms, and heartworms are the five primary forms of worms that typically harm domestic dogs. These worms may affect your dogs differently; however, they have similar symptoms that you should know.

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When To Deworm Your Pet

To prevent your pet from getting worms, you can deworm it regularly, and you must do this at a young age. You can deworm your puppies under eight weeks every two weeks.

Puppies can be dewormed every month between eight weeks and six months, and dogs older than six months four times a year. It prevents instances of parasitic worms living in your dog’s body.

Effects Of Worms On Your Pets

Worms are parasitic worms that can cause long-term gastrointestinal issues. Due to their harmful effects, it is critical to deworm your dog regularly, which is good for your dog’s health. Puppies with parasitic worms may become sick and experience growth retardation.

While worms hardly ever result in severe health issues besides lungworms. However, there are cases where you notice your dog not eating after deworming it. Your pet feels this way because intestinal worms stay in your dog’s intestinal tract, feeding on their nutrients, blood, and vitamins.

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Worms’ symptoms include scooting, a dull coat, weight loss, lethargy, and diarrhoea. Young puppies are particularly vulnerable, and an untreated worm infestation can result in anaemia, malnutrition, and intestinal blockage. Puppies with a high worm burden are at risk of dying.

Regular dog worming, fortunately, can protect your pet. It’s simple and the most effective technique to keep intruders at bay.

How You Can Prevent Worms From Infesting Your Dog’s Body

Deworming your dog only once may not be enough to keep them worm-free. When the medication for some worms wears off, your dog may become re-infected. Many wormers are only effective against mature worms in the intestine during treatment.

Remember that the best defence against worms and other parasites is frequent treatment. Regularly deworming your dog will keep him healthy and happy throughout his life.

Furthermore, since your dog contracts worms from infected soil, faeces, and food, you must clean up immediately after your dog finishes pooping. Additionally, ensure your environment is clean and prevent your dog from socializing with stray animals.

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We’ve reached the end of the article that talks about Dogs Not Eating After Deworming. Kindly stay tuned for more articles that relate to the topic; Dogs Not Eating. You might find the article Why Dogs Don’t Chew It Food interesting.




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