Pet Medication Side Effects

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Cat Never The Same After Last Cortisone Shot

MJB2 (Kansas City, MO) on 10/19/2021
0 out of 5 stars

My cat has flea allergies and had received a cortisone shot about once a year for the last 8 years or so. She never had any issues with the shot until last year. A few hours after the shot I noticed she was so stiff and had a large hump to her back. The next day the hump remained and she stumbled when walking and would fall when she tried to jump. Took her back to the vet but he said her hump was her loss of muscle mass due to being older. I insisted she had never had that before. He also suggested her stumbling and falling was old age and it was probably a coincidence she got the shot the same time that happened. A year later and she?s never been the same after that last shot. I know it was the cortisone shot that caused this.
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Fipronil Causing Seizures

Skozrt (Los Angeles ) on 02/15/2021
0 out of 5 stars

Generic Frontline (Fipronil) for small dogs, 1/2 vial on 8 lb chihuahua causing daily seizures.

Re: Antibiotics on Pets

Chilkat (Uk) on 08/04/2017
0 out of 5 stars


It is exceedingly irresponsible to use any allopathic drug found in a drawer on a pet, firstly without seeking vet advice, & even MORE importantly if it is a fluoroquinolone so called antibiotic such as Cipro. PLEASE DO NOT use Cipro or ANY fluoroquinolone on any living creature unless it is dying! These extremely dangerous so called fluoroquinolone 'antibiotics' are actually failed chemo drugs, they are topoisomerase inhibitors masquerading as antibiotics, & they are trashing the lives of countless people & our precious pets through the world, they have been doing so for around 30 years. This includes ALL modes of administration of FQ, INCLUDING the topical versions, the eye & ear drops . I am now permanently disabled because of this drug, & my precious cat was also sent irreversibly blind by the FQ BAYTRIL.

Please note the following : The FDA have again updated the warnings on this class of so called ' antibiotic'. because of our advocacy, this time confirming that are indeed associated with disabling & potentially permanent side effects of the tendons, muscles, joints, nerves, & CNS all which can occur together in the same patient, I know so, I exist in this horrific world every day along with many others. The FQs should only ever be used as a last resort drug, when all other suitable antibiotic options have been tried & all have failed due to the serious risks they pose.

Again, & I cannot stress this strongly enough, Please, do NOT take this so called ' antibiotic' unless you will die without it. Please google fluoroquinolone toxicity / FQAD ( fluoroquinolone associated disability ) for more information on this worldwide atrocity. You can find stories of pets who have suffered injuries from these so called antibiotics here. Http:// Https://


Temaril P Medication Causing Dog to Pant Excessively

Diane (Rocky River Ohio) on 07/23/2017
0 out of 5 stars

I have a 9 year old English bulldog who has been on apoquel and constant antibiotics for allergies. She went to a new vet who suggested Temaril p. My dog started Wednesday evening with 3 pills followed by 3 pills Thursday morning and evening and Friday morning before I became concerned with her panting. I gave her 1 pill Friday night and called the vet in the morning. I gave her 1 pill Saturday morning and the vet called back in the afternoon with instructions too decrease to 2 pills and so on. I decided to only give 1 pill Saturday night and she was up all night panting. It's Sunday now and I gave her 1/2 pill as to continue reducing the dose. She is not feeling well and I am concerned. What can I do?

Cortisone Shot in Dog

Patco007 (Miami) on 07/13/2017
0 out of 5 stars

Today July 13th at 6:30pm I brought my chihuahua to the vet for a stomach problem, they quoted me $500 to run some test. I told them I would go home to discuss with my wife and come back in the morning. They then pushed for a steriod shot which I accepted thinking it was the right thing to do. 30 minutes later, just as I walk in the house, my dog dies in my hands. We are in pieces right now! What can I do?

Nexgard Side Effects in Dog

Teresa (Hertford, North Carolina) on 05/07/2017
0 out of 5 stars

I gave my dog NexGard 3 days ago and today he can barely walk he's shaking and qquit twitching. Is there a homemade remedy for me to detox him?

How to Detox Nexgard Flea and Tick from Dog?

Tony (Redford, Mi) on 03/19/2017
0 out of 5 stars

I gave my 8 year dachshund a nexgard 1/2 pill, now shaking and scratching, please help. How do I detox the Nexgard side effects?

Re: Vet Care (thread starts in 2008)

Keynote (Oregon) on 03/02/2017
0 out of 5 stars

There is Vet here in Oregon, that loves animals and he charges the most reasonable prices and he is good guy. My cat really likes him a lot . I think he is cat whisperer My 11 year old indoor cat, fuffy was itching like crazy she was itching her rump tail and ear Fuffy was examine fleas so he gave her comfortis I went home was super scared to give the pill to her so I cut the pill in half and gave it to her the next 30 minutes fleas were dead or dying hours later Fuffy smelled like chemicals and fishy ..then I ran and read the side effects/reviews I was in utter shocked at how many people pets died within hours or days of taking it, I called VETS the receptionist said, well there are side effects with some pets! Death is side effect holey moley ...we quickly mixed up charcoal and gave it to her for three days and put her a nice warm sea salt bath for 20 minutes this pulls poisons out of her system. She survived. Anyhow after the all the fleas were dead she was still itching her rump, so we stopped her food and put her on tuna with a 1/2 tsp, of organic 100% pure pumpkin mixed in with tuna and all the itching stopped and her anal gland was back to normal . I wonder if the swelling of the gland was an allergic reaction to her food.

Dog With Possible Medrol Side Effects

Cristy (Hammond La.) on 11/19/2016
0 out of 5 stars

If anyone is able to help I have a 55 pound golden retriever with really bad seasonal allergies she's 6 and had the same problem last fall lost all her hair on her chest cut herself up. When I brought her to the vet he gave her Medrol pills starting her off with 8 mg two times a day I'm thinking that's too much but I gave it to her 4 hrs. ago now she's getting really aggravated growling and snapping every time her brother gets near her she's even trying to bite me she's usually the sweetest, happiest, most playful dog you ever want to meet. Anyone know what could be wrong. I hope the vet didn't give her tpo strong of a dose.

Antibiotics Causing Dry, Cracking Skin in Dog

Budda (Va.) on 10/29/2016
0 out of 5 stars

I am very anxious to find a natural remedy for my 1 yr old Sharpei who started suffering allergies at 6 months during the fall time which now he is a year and they are starting again. He is on prednisone and antibiotic because he was scratching and biting himself so bad he had open cuts. We did notice a huge difference the first time he was on the antibiotic stopped the itching and healed all the hot spots. This time around his skin under is foreleg is so dry and cracked and peeling. I am very concerned that it is from the antibiotic. I have been putting coconut oil on it, but need advice for another remedy please or has anyone else experienced this before?

Kenalog Shot Side Effects

Bob (Brea, Ca) on 10/13/2016
5 out of 5 stars

Yup. Sadie was having the chewing and itching problems. She was also pawing at her left ear. Vet gave her a Kenalog shot and saw an infection in her ear. Usual lethargy, drinking a lot of water and peeing a lot ensued.After 9 days of cream treatment for the ear, I took her for a follow up. Vet said infection was getting better but gave her an anti-biotic shot as well. When I got home I looked at the bill and saw it was another kenalog shot. I had a cow! Friend of ours just passed the boards to be a veterinarian. Called her.I called the vet and reported the side effects and the receptionist noted them for her records. Receptionist said a second one wouldn't hurt. Another week and no return call or follow up. Last night she strained for over ten minutes to poop. No more Kanalog for my dog!

Metronidozole Side Effects

Stacey R (West Hartford, Ct) on 08/04/2016
0 out of 5 stars


I am sharing a recent experience we had with our puppy - by pasting a letter I sent to our vet practice. Thanks for sharing your stories. I am angry at myself for not researching this medication before giving it to our dog. The good news is that Sammy is improving every day and we have seen no further seizures.


RE: Sammy R

August 2,2016

Dear Office Management,

I am writing in follow-up to express concern about the care of our dog, Sammy, in your urgent care clinic. As discussed, Sammy was seen by Dr. U. on 7/24/16 for diarrhea and Dr. Y. for seizure on 7/25/16.

I have the following concerns:

Sammy was given a medication, Metronidazole, for treatment of diarrhea. Dr. U. did not discuss treatment options nor shared information about potential side effects of this medication. Of most concern, is the fact that this medication is known to have neurotoxic side effects, even at low doses. No potential side effects of this medication were listed on the ?Home Care Instructions? I received at discharge.

2) When your medical team is prescribing any therapy, risks and benefits should be explained thoroughly so that pet owner can make an informed decision. Dr. U?s failure to do this is simply unacceptable and substandard care.

3) Metronidazole is not recommended for use in young puppies. Sammy is 7 ? months old. Given his age, why was this medication used as a first line approach for treatment of Sammy?s diarrhea? Why weren?t other treatment options offered and discussed with me?

4) I informed Dr. U. that I had given Sammy Loperamide during the night and that his diarrhea seemed improved the next day. Ironically, Dr. U. ?scolded? me for giving Loperamide without calling to discuss first. Loperamide has few known side effects for Golden Retrievers. In effect, it is a much safer option than an antibiotic with known neurotoxic risks. I have consistently read in the literature ?antimicrobial therapy and routine use of antibiotics in cases of acute uncomplicated diarrhea is strongly discouraged.? Antibiotics are specifically indicated only in animals with: confirmed bacterial infection, predisposition for bacterial translocation, and increased risk for sepsis. It would seem that prescribing Metronidazole as a first line approach for Sammy?s uncomplicated diarrhea was completely unnecessary.

5) When Sammy had a seizure within 24 hours of initiating this therapy, I again took him to your urgent care center. Dr. Y. agreed that the medication should be discontinued, but felt that the seizure was an unlikely to be a side effect. As such, she focused on investigating possible toxins and liver disease.

6) I now know that neurotoxicity and CNS symptoms (including seizure) are well-documented side effects of Metronidazole. Dr. Y's decision to disregard the seizure as a possible medication side effect (despite the recent initiation of the medication within the preceding 24 hours) also resulted in a missed opportunity for Valium treatment. The literature states that it can take up to 2 weeks for neurological side effects from Metronidazole to resolve. This time frame is significantly reduced through the use of Valium therapy. I feel certain that Dr. Y did not even consider Valium as a treatment option for possible neurotoxicity/neuro side effects. Instead, Sammy spent the next week with lethargy, pacing, panting, confusion, and had TWO more seizures within the next 24 hours.

This experience has been extremely stressful for Sammy and our family. I have learned to never unquestioningly follow the recommendation of a vet without first doing my own research. Although it remains to be seen if Sammy?s seizures and behavior changes were indeed a side effect from this medication, he is improving daily. Whatever the outcome, it does not excuse Dr. U?s obligation to discuss risks of a therapy he prescribed.

Please use our experience as an opportunity to make changes to your urgent care practice.

I encourage the vets in your practice to review literature on the use of this medication and it?s risks. All vets should also be aware of the recommendation for treatment of neurotoxic side effects with Valium which has been shown to facilitate a quicker resolution of symptoms.

?Most canines who develop neurologic signs secondary to metronidazole administration have received weeks to months of therapy, but toxicity after short-term therapy at relatively low dosages (<60 mg/kg/day) has been reported.?

Diazepam as a Treatment for Metronidazole Toxicosis in Dogs: A Retrospective Study of 21 Cases Jason Evans, Donald Levesque, Kim Knowles, Randy Longshore, and Scott Plummer

J Vet Intern Med 2003;17:304?310

I would also encourage the urgent care vets to use a more conservative approach to treatment of uncomplicated diarrhea.

Most importantly, the vets in your practice should always discuss possible side effects and risks associated with a recommended therapy. The neurologic adverse effects of metronidazole are well documented in humans and companion animals. I can assure you if Dr. U. informed me that neurotoxicity and seizure were know (albeit rare) side effects, I would have opted for another treatment. I cannot overstate this point.

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Steroid Shot Side Effects

Gerrie (Plymouth Ma) on 08/02/2016
0 out of 5 stars

On two separate occasions we had depro med shot for our cat and both times she peed excessively while sleeping!! Although this is a miracle drug for allergies we now use steroid pills in low dose.

Metronidazole Side Effects

Ayre (Wi) on 05/17/2016
0 out of 5 stars

Metronidazole -Warning- We feel our dog was hyper sensitive to this drug. Became suddenly blind-

Investigate side effects before allowing your dog to have any drugs- We wonder why the vet doesn't provide a warning sheet.? Why doesn't the FDA require this with pet meds? Our loving 7 yr old welsh terrier- we believe had a toxic reaction to this drug- our vet had prescribed this- and gave her another dose of this as she was being released from an overnight stay-when we arrived home and placed her in the house- she immediately was having a bad reaction, going in circles under the table, along the wall-we picked her up-and held her she seemed to calm down, she then rested-So we thought she was o.k.- the next morning took her out to relieve herself-she acted like she was blind!!! . Now totally confused, wobbly, -took her for a 2nd opinion they confirmed that she was now blind- due to optic neuritis inflammation- and that we should see a specialist at the emergency clinic-Went to the ER clinic- they briefly looked at her-and the tech decided she wasn't serious enough-and that the earliest appt was the next day- by the time the specialists were able to see her-it was now 2 days later. This new clinic ran lots of blood work- for $1200.00- We found out she tested positive for Lymes Disease. As we began to investigate her conditions and symptoms on line- Under METRO we saw the warnings- which she had now developed-sudden blindness, Neurologic symptoms, head tilt, confusion. 1)Our first vet administered this on a empty stomach-suppose to be given with food- we now learned 2)Not to be given when Lymes disease is present-which we later found she had 3) she now also had new liver damage due to the steroids she was given too. We feel our dog was poisoned, and mis- diagnosed, in error. Looking back (too late)We wondered why she wasn't put on emergency iv's to flush this out of her system?

To make a long story short- we had to put our sweetheart to sleep.

After looking online-We also brought these printouts of warnings in to the emergency clinic-neuro Dr's attn-at our first appt- she dismissed all of our concerns- and said "Not Likely"

As a final note- We never had to take a pet for advanced care before-(and hope we never do again)-for we have lost faith in professional vet medicine. They instead insisted we restart this drug- and they wanted a liver biopsy, MRI and spinal tap-(that next night when our dog was crying out in pain (it was suggested she was actually not in pain??? perhaps instead- out of her mind- and not coherent?)We weren't going to allow her to be a lab rat-anymore- we knew we must take her back to our new local vet and put her down- For Ayre- No more sorrow no more pain- but we feel this was really botched up.

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Baytril Side Effects

Jessica (Port Hueneme, Ca) on 08/31/2015
0 out of 5 stars

Baytril killed my cats!

I had two different cats of different ages given Baytril for different reasons. Both of them died 2 weeks after being given the drug. They took the pills for one week. I watched and kept taking them back to the vet. I complained that I knew it was Baytril and was brushed off. With both of their lives ending in a final seizure. Take this drug off the market. I see way to many complaints all over the internet.

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Side Effects from Vibramycin / Doxycyclin Given to Cat

Cielle (Athens, Greece) on 03/06/2015
1 out of 5 stars


I saved a cat that I found out in the snow a few weeks ago... she was fine and strong apart from one blocked nostril ( on and off ) due to upper respiratory disease... I took her to the vet as she got worse and got all blocked up and would not eat. He prescribed Vibramycin / Doxycyclin and she has just gotten way way worse.. the blocked nose has cleared up but she makes noise like she is in pain whenever I pick her up to move her and was just basically looking very unwell and down...

I just thought that she was ill due to the respiratory thing and since I don't usually give cats any conventional meds, thought that perhaps it just takes some time for them to kick in... But today she is really tilting her head to the side, she was not able to keep her balance and actually fell to the side... I looked at the side-effects and saw that it said something about "pressure in the head" (translating from Greek medication notes... ) and that if one feels it to immediately stop... I have stopped it and hope she gets better... I called the vet and he said he had never heard of this happening with this medication and that she could have already had something underlying causing this... I just don't believe it, she was absolutely fine with her head and balance etc... I know it is the antibiotic and feel very sorry that I gave it to her... I mean it says "don't give to pregnant women" and "don't give to children under 8" in the medication notes!! What on earth would make anyone think it is ok to give to small animals!!! ???


My Dog Was Given a Steroid Shot and Now Has Diabetes!

Cathy (Ortonville, Michigan) on 02/08/2015


I saw your site while I was doing research on diabetes in animals. If possible I would like to get more information from you. This is why.

I have a 10 year old Huskidoodle, he has always been super healthy. He got an ear infection that was annoying him and home remedies were not working so I decided to bring him to the vet. Besides this ear infection he has not had any other health issues whatsoever and I have had him since he was a puppy, so I brought him to the vet and the recommendation of treatment for his ear infection was an ear cream and a steroid shot. I allowed them to give him the shot and I applied the cream for a week and his ear cleared up and he was back to normal for about a month. Then he started drinking a lot, became extremely tired, not eating like normal and lost 4 pounds and also started having accidents in the house. Which he never has before except in his first 2 weeks of being potty trained. I did not bring him to vet until the second week of this because now I was scared and it was not getting better.

We went to the same vet and he had a urine test and full blood work done. I was told it is diabetes and he was put on insulin 2 times a day. The insulin is Novolin N and for now it is 20 ml twice a day and in 10 days he goes in for a check-up to see if his dosage needs to be adjusted.

I need other peoples opinions about all of this, he was so healthy and happy and active and now he is sick and miserable. Was it or could it have been the steroids shot? It was so quick, from healthy to I thought I was gonna lose my poor boy. Any thoughts would be greatly appreciated.

Sincerly, Cathy


My Cat was Killed by Clavamox

Rita (Miami, FL) on 12/17/2014
0 out of 5 stars

My cat was killed by Clavamox. My cat seemed to have a hairball he could not expel. On Friday he doesn't eat most of his food but does drink water and can walk and sit up fine. Saturday morning he doesn't want to eat and he feels very warm as if he had a fever. From symptoms I thought he might have a stomach infection from hairball; he could still walk and sit up fine.

His vet gives me Clavamox. I force feed him some food and 1 hour later I give him 1 ml of Clavamox. Soon after he ingests the antibiotic, he vomits the food I had given him and the hairball came out, his temperature goes down, but he seems to become weak, lethargic, and not able to walk well or sit up well. I just thought he had not eaten well and this is why he was like this. He still doesn't want to eat so I force feed him again water, food and Nutrical to keep him from dehydrating every 4 hrs. 12 hours later I give him another 1 ml of antibiotic.

Sunday morning he feels extremely cold to the touch, he doesn't want to eat or drink water, he is severely weak, almost unable to walk and unable to sit up. I don't give him the antibiotic and I start force feeding him food, water, Pedialite, and Nutrical every 2 hrs, and heating up towels and putting them on him to bring up his temperature, but he just gets worse as time passes. He has severely shrunk in size by now, seems to be very dehydrated no matter how much I gave him. I rush him to the emergency vet clinic where he dies.

I later find out in the internet that an allergic reaction to Clavamox makes them vomit and drowsy which were symptoms my cat presented, and Clavamox can also make their muscles weak which my cat also developed. My cat seemed to have had a severe allergic reaction to Clavamox.Be very careful in feeding this antibiotic and if you see any of these symptoms don't wait and rush him to the hospital immediately, it can mean the difference between life and death.


Re: PetArmor for Dogs Causing Side Effects

Debbiehd (Dayton, Ohio) on 07/06/2014
0 out of 5 stars

I applied PetArmor to my Lab about a week ago. He started scratching violently and I thought it would wear off. He did not even have any fleas--I was using this as a preventative. What should I give him? He is miserable and also has developed a lump under his leg, one of the places he is itching severely. I just started researching PetArmor and there are some lawsuits because their pets died. What can I do to help him? This is such stupidity that you can't even trust what you buy at the store for $40 or $50 dollars. Can anyone help me with this? Should I give him Benadryl? How much? He weighs 115 lb. Thank you.

Re: Cat Died from Depo-Medrol Shots

Redragtop (Pocomoke City, Maryland) on 06/30/2014
0 out of 5 stars

My beloved 10 year old Siamese cat was in distress from fleas, so I called our local vet for some help. Our Vet was not in, but his nice young associate helped us. He agreed that my baby showed signs of an allergy to fleas, and gave him two Depo-Medrol shots to make him "feel better in a couple of days", and sold me a topical flea medication for "instant relief". This was on Friday afternoon.

On Saturday, my cat stuck to me like glue. I couldn't leave his sight. He wouldn't eat, but I could get him to drink water. At bedtime, I put him in my bed. After several hours, my baby woke me up with a terrible cry, and started with a seizure. He had seizures all night long, and passed at 4:45 Sunday morning.

Now, I find out that Depo can cause kidney failure .... the vet didn't warn me ...... it was supposed to make him feel better .....