Table of Contents
| ANTI-ITCH MEDS |
| CORTISONE |
| KETOCONAZOLE FOR YEAST SKIN INFECTIONS |
| NON-STEROIDAL ANTI-INFLAMMATORY MEDICATIONS |
| RIMADYL |
| XYLAZINE AND ATROPINE |
Pet Medication Side Effects
Please let us know about any side effects you have witnessed after your vet administered a new prescription or medication. We'd like to know the type of the breed of your pet and also which medication/prescription he or she received. The more information you can give, the better.
If your pet has experienced side effects from a vaccination, please read our extensive vaccination side effects page. Click here.
1 SIDE EFFECTS
[SIDE EFFECTS] 09/24/2008: Janet from Palm Coast, Florida writes: "Vet has her on prednisdone 5mg and hydroxyzine 10 mg to relieve itching. Currently she is experiencing shortness of breath or panting. Sometimes at rest she does it. Would these meds cause her problem? Thanks. Oh, doc wants to do skin test on her to find out the source also."
![]() | ![]() | ![]() | ![]() |
3 SIDE EFFECTS
[SIDE EFFECTS] 11/20/2008: OTH from Atlanta, GA writes: "My dog was scratching a lot (been a life long scratcher) but otherwise perfectly healthy so I bought him in to the vet one day when I had to bring in my other dog. The vet gave him a cortisone shot and said he may eat, drink and pee a lot. He was fine for the first 24 hours but then had a night of severe vomitting (9 plus times including blood) and was left lying and shaking in pain. He has now been at the vet for 24 hours on an IV and is in the same condition and still won't eat. No one at the vet warned me about these kinds of side effects and we don't know yet what will happen. Wish us luck."
![]() | ![]() | ![]() | ![]() |
[SIDE EFFECTS] 09/29/2008: Amy from Glendale, Arizona writes: "I took my 14 year old cat to the vet because she was limping. The Dr. determined it was her elbow, and gave her a shot of cortisone. My cat stopped eating, and 48 hours later I had to put her down. The cortisone may have brought to light an underlying problem, renal failure. I know she would have shown symptoms eventually, it all just happened so fast."
![]() | ![]() | ![]() | ![]() |
[SIDE EFFECTS] 06/13/2008: Rick from Huntington Beach, Ca writes: "Cortizone shot: I had 12 year old Lab in healthy condition.Within two weeks he begin vomiting became lethargic.Took him to the vet died two days later.dont know if the cortizone shot weakened his resistance or not.Vet said he died of a bacteria that went toxic."
![]() | ![]() | ![]() | ![]() |
KETOCONAZOLE FOR YEAST SKIN INFECTIONS
[WARNING!] 08/10/2008: Guenady (speakeasy /@/ wanadoo.fr) from Nice, France writes: "For your accumulated information on adverse reactions to drugs, two of my dogs were prescribed ketoconazole for a yeast skin infection. One survived the treatment, the other died during treatment. Other than the skin infection (which was not life threatening), he had no health issues. I was not told before treatment that this medication is hepatotoxic and that it can kill, that it has been established by the manufacturer that there is a 1:10,000 risk of allergic reaction (with underreporting recognized). The vet was not aware (!) of the symptoms of allergic reaction, so when I reported them she did not stop the treatment (dark urine, extreme fatigue, skin turning black and peeling...). When I finally stopped the treatment myself, because my dog was just getting sicker and sicker (after 13 1/2 doses administered out of 30 prescribed) it was already too late. 4 days later he came down with hepititis and 34 days after starting the treatment he died (with bloody vomitting and bloody diahrrea). Although I reported all this, despite my distress) nothing was taken into consideration, everything was dismissed as being a coincidence, and I was given the classic excuse 'your dog was already sick and would have died anyway.' This is an outright lie, of course, and contradicts all the medical file of my dog. But try to get an adverse reaction taken into consideration when the 'authorities' don't want to take it into consideration! Of course there is underreporting! Normally I never give vet medicines to my animals, only homeopathy, but at the time I had no alternative therapy, as skin yeast infection is very difficult to treat. I have since gotten my second dog almost out of her condition, using probiotics and herb Robert and direct applications of hydrogen peroxide on the worst affected areas. My opinion of vets and the authorities that 'oversee' them, has descended to about 0. Would like to know if others have had bad experiences with ketoconazole."
EC: Thank you for the information, Guenay. So sorry to hear about your dog. We have decided to create a new page to address terrible side effects from pet medications.
[WARNING!]08/12/2008: Cindy from Torrance, California replies: "I had a similar problem with Ketoconazole as my Shar Pei had a terrible case of yeast. I stopped the medication after his underbelly started spotting black. After scouring the internet I found the website nzymes.com. It took over 1 year to completely clear up the yeast using their protocol and only feeding him a protein diet (I still cook chicken and spinach for him). I recommend anyone who has a yeast problem with with pet to start them on this protocol."
[WARNING!]10/03/2008: Jean (Jeandesertflower@aol.com) from Desert Hills., Arizona replies: "I would like all pet owners to not give their dogs Ketoconazole for Yeast or Valley Fever. Against my best judgment I gave this to our dog for Valley Fever and he died 3 months later from a failed liver. This is one of the side effects. It is much better to go Natural and stick with this so your dog will have a better life. And by the way they have a cure in Tucson, Arizona at the University of Arizona, but this is another drug and would have to be checked out for side effects. Many states have Valley Fever now. The states are California, Nevada, New Mexico, Texas, Arizona, and Utah. This problem in in the dirt. Something needs to be done. This affects humans and animals and etc.
Please beware of what I am saying for the sake of your pet!!!"
[SIDE EFFECTS]11/15/2008: Pamela from Austin, Texas replies: "My 8 year old standard poodle was prescribed ketoconazole to suppress a chronic yeast outbreak in his ears. His liver would not tolerate it. I pilled him once. He vomited bile. That was the end of that."
![]() | ![]() | ![]() | ![]() |
NON-STEROIDAL ANTI-INFLAMMATORY MEDICATIONS
[SIDE EFFECTS] 08/21/2008: Dottie from Harrisburg, PA writes: "NSAID for dogs: These are VERY dangerous drugs. Many dogs have died from just one dose. I had 3 dogs that I gave 1 Deramaxx pill many them sick & lethargic I stopped them immediately. Will not give any of these meds to my dogs ever again."
![]() | ![]() | ![]() | ![]() |
1 SIDE EFFECTS
[SIDE EFFECTS] 11/16/2008: Jean (luswinton /@/aol.com) from Johns Island, SC writes: "My chocolate lab, George - a rescue - was prescribed Rimadyl for early signs of arthritis. No information was given me about adverse side effects, and this was in 1997, several years before the "Client Information Sheet" became available by Pfizer, was given to the vets, who in turn are supposed to give the CIS to their clients. Since this is not mandatory, most vets don't take the time to distribute the CIS.
My George's story may be seen at:
http://www.dogsadversereactions.com/nsaid/memorials.html#george
To read about the Class Action Lawsuit against Pfizer - see:
http://www.dogsadversereactions.com/nsaid/lawsuitsettled.html"
![]() | ![]() | ![]() | ![]() |
1 SIDE EFFECTS
[SIDE EFFECTS] 09/08/2008: Patricia (Msdoggone@aol.com) from Laurel, Maryland writes: "I took my dog in to a Veterinarian to be neutered and he injected him with Xylazine & Atropine for a sedation prior to a surgery and he died within minutes. The vet in question used a 100 mg/ml bottle which states for large animals only Cattle, horses & cervidae not reccommended for small animals. I am devastated and traumatized by this and wanted you to know about this. It was not a vaccine as such but FDA reports over 740 animals of all different species have died. The side effects are so horrible. Mutley was my dog's name and I miss him terribly everyday. Why would anyone use this drug? I have found vets that use this for euthenaisia. I had to subject my dog to a necropsy to find out what I already knew, that he was found to be a normal and healthy dog. He was only 2 yrs 10 months old. I fear many more animals will die under this veterinarian's care. No surgery ever took place. Note that the FDA has only the reports that were filed. I am sure there are many more ,as this vet told me that these things happen. I am sure that others let it go. I am not. The clinic treated me very badly and even threatened to sue me if I told any one that my dog died there. Thank you for reading my story. Sincerely, Patricia Deeds 301-497-7692 Should you need to contact me."
11/05/2008: Linda from West Newfield, Maine replies: "You go Patricia!! Just the fact that you were threatened tells me a LOT. And I'm so sorry for your loss. Stay strong!!"
![]() | ![]() | ![]() | ![]() |
Did
one of these remedies work for you?
Have another suggestion for us?
PLEASE
SEND US YOUR FEEDBACK!



