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Ask the Vet About Vaccine Side Effects in Dogs and Cats

Vaccine Side Effects
Symptoms & Diagnosis
Treatment
Ask the Vet
Ask the Vet About Vaccine Side Effects in Dogs and Cats
MichaelDym, V.M.D.
Michael Dym, V.M.D.
Doctor of Veterinary Medicine

As a practicing veterinarian, Dr. Dym has over 19 years of experience and dedication to enhancing the overall health and well-being of pets. His commitment and passion for pet health continuously drives him to learn more about the art and science of homeopathy through ongoing training and education.

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Showing 1 - 15 of 790
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Showing 1 - 15 of 790
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Date: Feb 13, 2020
Category: Vaccine Reaction
Pet Type: Dog
Topic: Excessive Swelling

Question:I recently took my 10-year-old chihuahua breed to the vet to receive his annual vaccinations. He seemed fine afterward, only feeling a bit dazed. However, the next day, I came home from work to see that nearly half of his face was extremely swollen and irritated. He's behaving like regularly, but he is breathing heavily and the swelling is bothering him. The most swollen area is his eye, making it barely open. He is 10 pounds and has been getting his shots annually. He keeps itching himself and it's very worrying. Thank you.

Answer:That is more than likely an allergic reaction to the vaccines and he needs to be rechecked by your veterinarian - the vaccine company will often pay for any treatment. Getting stronger medication from your veterinarian is ideal but if that isn't an option, give him benadryl by mouth dosed at 1mg per pound, so if he is 12 pounds, he needs a childrens dosage which is 12.5mg - this is exactly half of an adult dosage - repeat erery 8 hours until swelling subsides.

Date: Jan 23, 2020
Category: Vaccine Reaction
Pet Type: Dog
Topic: Lethargy after vaccination

Question:Within 48 hours of getting her vaccines, my one year old pup was wanting to just lay down and shivering at times. Took to emergency vet clinic and was told she didnt have pancreatitis but her liver enzymes up. Three weeks later, a retest of liver enzymes, they are normal after being treated for vaccine reaction with Benadryl and a medicine for liver. She is due for vaccines in 3 months, what do we do. I dont want her to get sick again or worse Thanks for your help

Answer:You will need to consult your veterinarian that has access to all of her records and weigh her risk of exposure to what she is being vaccinated against to the risk of another reaction. I lean away from vaccinating patients that have had reactions in the past.

Date: Dec 30, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Bump possibly from vaccine?

Question:Hi! I took my pug in to get vaccines (kennel cough and flu) on Oct 19th. The week after I noticed a bump on her left hind leg In the thigh area. Its soft and moveable and small I took her back to the vet and since they didnt write down which leg they put the vaccine in she couldnt be sure if it was a reaction to the vaccine. They took a needle biopsy but it came back as an immune response and inconclusive? Should I have them remove it? Im worried about putting her asleep for it. Im also wondering if I should ask for a discount since its originally their mistake for not denoting which leg they put it in. Thank you!

Answer:A bump from a vaccine reaction will last for about a maximum of 2 weeks so > 2 months later, it would be odd for this to be secondary to the vaccine. Rabies is the vaccine that we will see a little knot secondary to, not really influenza, but I haven't been giving influenza lately because I'm not seeing it right now. I would call and discuss it with the manufacturer of the vaccine (like are they routinely seeing knots, maybe with the batch they vaccinated her from, ??)

Date: Dec 25, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Vaccine reaction

Question:My 8 week old puppy received a 4-in-1 vax on Monday, his first set with me. Since then he's vomited 3x, spit up water 2x, and has had diarrhea. He's not waking at night to potty, and has soiled in his crate. He's lethargic. Being Christmas, what should I do to help him?

Answer:At his age, as small and young as he is, he can get dehydrated pretty quickly so with vomiting, diarrhea and lethargy, I would go ahead and have him seen at the emergency clinic.

Date: Dec 22, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Long term reaction

Question:My dog, 11yr old GSD got a rabies vaccine. Within 24 hrs he stopped eating, is vomiting, hyperventilating, lethargic and depressed. This reaction is not going away, it is now 10 days later. He also has copd that was without any major symptoms before

Answer:That is more than likely not a reaction to just a Rabies vaccine but either way, your veterinarian definitely needs to recheck him and run some tests to see what is going on.

Date: Dec 11, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Asprin

Question:I gave my dog a NSAID Asprin after her DAPP vaccine. Was that ok to do? I looked it up and your webpage says to use that, but I talked to a vet just a bit ago and she said I shouldnt of given it to her cause her liver cant matasteis it? I hope she will be okay. I gave her one pill of 81 mgs. She is a 5.8 lb yorkie-pooh.

Answer:An appropriate dosage of aspirin is not toxic (all other NSAIDs are) - BUT 81mg is too much for a 5.8 pound dog - maybe that's what your veterinarian meant.

Date: Dec 10, 2019
Category: Vaccine Reaction
Pet Type: Cat
Topic: vaccine

Question:my cat has herpes can i give her the vaccine for rhinotracheitis when shes not sick and will this help prevent flare ups. its a 3 in one shot.

Answer:Your veterinarian, that knows her entire shot history, will know better if that is appropriate for her.

Date: Dec 7, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Questions about Seizures and vaccines

Question:First some info, I had a toy fox terrier (or some small breed terrier) for about 12 years. He acted like a hyper dog all his life until he got a limp tail and started acting off. After 3 days of waiting to see if he got better we took him to a vet. The vet checked him out and said he's healthy for his age but is getting arthritis. The Vet gave him a shot for it and said he may be dizzy and sluggish for about a day. About an hour after the shot he had a seizure that changed him. The instant the seizure ended he went from a hyper active dog to struggling to even stand. He then had a seizure every day when he woke up from sleeping (about 3 a day 2 at night) For about a month. So my question is what happened with the shot that changed him? Did he have a overdose from the vet? Did his body just react badly to the shot? He was put down after the month as he gradually gave up doing literally anything. Wouldn't eat, drink, play, bark, go outside.

Answer:So sorry for your loss. I would need to know the active ingredient of the shot, it's concentration, how much was given, the weight of your dog, etc. to really even start guessing what happened. Your veterinarian is really the best one to ask.

Date: Dec 1, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Vaccine side effects?

Question:Our 2 year aussiedoodle received vaccines on November 19th, is is possible for side effects to show up a week later? One week later her lips were swollen, she ate dinner that night but now doesnt want to eat, is throwing up a little stomach goo and has diarrhea. She is still acting mostly normal otherwise. Is this normal? We have a vet appt tomorrow but I'm freaking out, what if it's the dreaded cancer??

Answer:It's probably not from the vaccines if it is one week after them. Luckily, since she is only 2 years old, cancer is rare possibility as well.

Date: Nov 22, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Vaccine reaction after anesthesia

Question:My dog had his dental cleaning done and was given his rabies, leptospirosis and bordetella vaccines the same day. The vet said it was safe but my dog has had issues ever since. Diarrhea, lethargic and poor appetite. Hes been given fluids twice since this plus a B 12 shot and nausea meds. He does have a history of digestive issues but things have been worse since the procedure. Was giving those vaccinations really safe if he was just recovering from the anesthesia? He is just getting back to normal now. This was 2 weeks ago.

Answer:It's usually fine to give those at the same time if he is healthy otherwise. Since your dog is sensitive, in the future, definitely separate the rabies and the lepto and consider risk vs exposure about whether he needs lepto.

Date: Nov 22, 2019
Category: Vaccine Reaction
Pet Type: Cat
Topic: Rabies and distemper shot reactions

Question:I I just got a 6 month old boy cat and got him his shots a worm pill and topical flea treatment. He was friendly and affectionate before. Now he meows then growls. He rubs on my leg and I can pet him. He is not aggressive but starts to growl and cries if I try to pick him up. Should I be concerned?

Answer:He may be a little achy and painful from the vaccines but this should only last for ~ 24 hours. Anything longer needs to be rechecked by your veterinarian.

Date: Nov 21, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Reaction to Rabies virus

Question:My puppy had a rabies vaccination 3 days ago. Had a reaction several hours later. He started leaning to one side and shaking. The leaning isn't as bad but the shaking is the same. No classic systems usually associated with a reaction. No vomiting, diarrhea or lethargy. Eats, drinks, uses the bathroom and plays normally. He is 15 weeks old and weighs 4.8 lbs. Was neutered 2 weeks ago and had ears cropped under anesthesia 5 days prior to getting the vaccination. I can't find anywhere this kind of reaction. Took him to the vet and they said to give him Benadryl. It didn't work. What can I do? Have you ever heard of this type of reaction?

Answer:No, that is not a typical vaccine reaction. I would call and discuss it with the vaccine manufacturer. Have your veterinarian recheck him, run some blood work and check for other things as well. There are much stronger, prescription medications than Benadryl if it is a vaccine reaction.

Date: Nov 9, 2019
Category: Vaccine Reaction
Pet Type: Cat
Topic: Vaccination after effects

Question:My cat is recently vaccinated, first time actually. Its been 3 hours since then and right now hes been meowing and rolling around recently. A few minutes ago, he tried to walk but collapsed. Is this normal?

Answer:No - he should be rechecked immediately.

Date: Nov 8, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Rabies vaccine reaction

Question:My dog is 6 yo shihtzu and Fl requires a yearly rabies vaccine. Hes usually lethargic after but this time he is extremely lethargic, loss of appetite, panting (which he hardly ever does) and shivering. He is 18 lbs. what can I give him to help with his symptoms. He is not vomiting and does not have diarrhea

Answer:You can try benadryl dosed at 1mg per pound of body weight. No dog needs yearly Rabies vaccines, especially one that has that kind of a reaction - check the laws in your state.

Date: Sep 23, 2019
Category: Vaccine Reaction
Pet Type: Dog
Topic: Vaccine Reaction

Question:Hello, My 1 year old Shih Tzu had her one year rabies vaccine yesterday ,and noticed that she is not interested in food drinks or play just want to sleep and looks very scared is that a normal reaction ? and how long will last . I am a bit concerned... thank you for your help!

Answer:A little tiredness can be normal for about 24 hours but she needs to eat and it shouldn't be too extreme. See your veterinarian for a recheck if it continues.


Showing 1 - 15 of 790
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