Is Bravecto safe for dogs?

Hello. I am writing for your opinion on using Bravecto, the pill that provides 12-week flea & tick protection. My vet is keen on it. My concern is that one of my two dogs has had cancer twice; also she reacted badly (vomiting) to a similar pill when she was a puppy. What is your advice? Thank you


Editor’s Note: for more information, check out these two articles: Homemade Flea and Tick Prevention for Dogs & Best Flea and Tick Prevention for Dogs

Know the answer? Comment below! Got your own question? Ask it here.

Leave a Reply

newest oldest most voted
Kimberly Alt (Admin)
I wanted to share my experience with Bravecto. We gave it to our dog Sally this spring per our vet’s recommendation. (FYI, we absolutely love our vet and she has been absolutely fabulous with Sally.) It was a chewable tablet that offered ~4 months of protection I believe. At the time, I hadn’t heard any of the side effects that pets were experiencing or I would’ve asked my vet for more information.

As one of the comment moderators for Canine Journal, my heart breaks reading all of our readers’ comments about what Bravecto has done to your pets. Fortunately, our Sally has been completely healthy and happy and didn’t get sick from the Bravecto. In the future, I will ask more questions up front about potential side effects of medications and do research on what my vet recommends for my dog. I consider us to be very lucky that nothing bad happened to our sweet Sally.

I want to express my sorrow for those of you who have given Bravecto to your dogs and they have gotten ill from it. I can’t imagine how it feels to be in your shoes and I want to thank you for sharing your experiences with our community so other pet parents can be more informed.

Lan aston
My 1 year old white bullboxer had terrible demodex bravecto has cleared it up in 3 sorry to hear all youre nad expericances tho
I’m lucky to still have my boy with me. Do not give this to your dog. Do not. He took it back in August (5lb chihuahua) imagine that a small thing being recommended such poison.. wow..
He had some sort of tremors, wouldn’t eat, he lost all his energy and all i did was lay next to him hoping for him to get through it and he did. I read reviews too late but if i would’ve known i would’ve threw it out.
Julie Steel
I lost a perfectly healthy Labradoodle aged 8 having given her Bravecto. She had never been ill, was energetic and had a healthy appetite. Having suffered for 3 weeks, we had to let her go, her tests showed Liver and Kidney disease all of a sudden. The vet told me it was unlikely that Bravecto had caused this. I trusted I was being given accurate information and advice, although I did at that point start to research. These are typical signs of side effects of this medication.

We have just had a week from hell with our 5 year old, 40kg male Labradoodle, who also is never ill, full of life and eats exceptionally well. He has had Bravecto (on the advice of the vet), even though I voiced concerns previously. The problem as I see it, is that the dog doesn’t necessarily have an immediate reaction, it could be the same day, week, month or year, if the tablet is given on a regular basis. I’ve now researched even further, to find out that the toxins can build up, and slowly poison the dog, especially if they are not strong in the first place. The symptoms of both previously healthy dogs, did not come to light straight away, but after taking on a regular basis for a year. They were both disorientated, stagger, violently sick and diarrhoea, and all the usual symptoms connected to Bravecto. Our dog didn’t even recognise us for days.

Our current experience started 5 weeks ago, within a week of taking the tablet. I’ve never seen such a sick dog, and took him to our vet – cut a long story short 3 vets at the practice could find absolutely no conclusive reason for his illness, all the tests came back negative, and the dog ended up staying in for 2 days. At this point they recommended a referral to a vet hospital, which were also very good, but don’t seem to want to hear concerns about Bravecto. He had every scan, MRI, CT, Spinal tap, advanced bloods, to no avail – there appeared to be no answer. Our poor dog didn’t recognise us, couldn’t stand straight, and paced, without stopping for 36 hours straight. We were absolutely devastated and distressed. I asked for a neurosurgeon to have a look and that also concluded negative. I’m not medically trained at all, but know the dog, and it was definitely neurological in nature. He’d seen 3 vets and 4 specialist vets in the period of a week.

We brought him home on Thursday night, none the wiser, but if we were going to have to make the dreaded decision to let him go, it was going to be with us at home.

A miracle happened, and slowly (presuming by now the toxins had expelled themselves or worked through his system), our boy slowly came back to us over the next 2 days and now appears back to normal. We are so relieved to say the least, and will never ever give another dog this dreadful poison again.

I actually don’t know a vet that will say it could be related to Bravecto, but do have 2 colleagues who used to work as Vet Assistants, who both said the practice were bound somehow to prescribing this, but they themselves would never, ever give to their pets. Says everything.

Additionally, why do all vets want to recommend Royal Canin and Purina to poorly animals – indpendant dog food sites, show they are really low end and full of sugar and have as much goodness as cardboard. I’m afraid, as soon as my boy got home and wanted to eat, I put him straight back on to his raw……. he is now bounding back to normal.

I’ve owned dogs for 45 years, and up until using Bravecto have never experienced anything like this before.

Please, anyone reading this, do your own research before making the decision to give your dog Bravecto. I have never voiced anything on the web before, but as a concerned dog and animal lover, had to tell the story.

Has anyone had their dog act aggressive after taking bravecto?
I also gave my 2 dogs the Bravecto the first time on the 31st of October this year. One dog is fine but the other one is so sick. We thought she had a tummy bug and took her to the vet. One day she is fine but as soon as she start eating again she would vomit. Her belly would swell so that she can’t even lay down on it. She has been tested for an obstruction and they did liver tests but can’t find the reason as to why this is happening. I will NEVER give my dogs this poison again.
Just lost my healthy dog will never reccomend or use this poison ever
Jim W
I began giving my dog Bravecta in the middle of June this year. In the middle of August she began vomiting for no apparent reason. I first thought she had eaten something around the house or the backyard that was poisoning her, but eventually ruled this out because it kept happening regularly, week after week, even though she is nearly always in my presence since I’m retired.

In the middle of September, after her second dose of Bravecta, she started having regular episodes where she would vomit, become lethargic, suffer tremors and a staggered gait. These episodes lasted four days the first few times, and occurred about twice a month. Eventually the episodes started happening more frequently, and would last about two days. Currently, these episodes are lasting anywhere between 12 hours and two days, but they’re occurring slightly more frequently than once a week.

I took her to the vet and am waiting for the blood panel results. She recommended that I take her off the Bravecta. I agreed with her whole heartedly. Unfortunately, she’ll have that crap in her system until December 13. Until then I’ve. Just been treating the symptoms the best way I can. I will take the advice of an earlier commenter and complain to the FDA as well as Merck. I’m also going to go on YouTube and share my experience. My dog has been so sick, and I’ve unwittingly been the cause.

Make sure you get a case number from maufacturer and make detailed notes on your pets illness symptoms, keep all vets bills, copies of reports and insist on test reports, I am fighting at the movement after losing my perfectly healthy dog to this poison, the more publicity you can get the better because vets and authorities in it for the money and trying to fob owners off that want to report/ advise of symptoms. So sorry your pet is ill,nothing will bring mine back, but they will listen to me however long it takes, get this off the shelves!!
Abigail Escobar
My dog Chika is in the hospital now for a very high blood sugar.she has an increased thirst and urinates frequently.Shehhad been given bravect last nov 21 this year.
jefferson formales
hey abigail. my dog also experiencing same situation like your chuahua after taking bravecto. how is you chuahua today.
jefferson formales
how is your dog rught now whay meds she taking up.??
Oh. My. God. Something compelled me to check up on Bravecto. I have had the exact same experience as you. Will not be giving this to my dog again.
I hate using chemicals on my pets. Someone mentioned Cedarcide…has anyone else used it? The website says it is safe for dogs, cats and people.
Linda Barbour
Go to some of the natural product sites..NaturVet. They have natural one spots or sprays that work is deterant or preventive…Skin so soft by Avon works to deter mosquitos…mosquito dunks to go in standing water or rain barrels kill larvae. Diatomaceous earth go in places that you think fleas breed outside or inside..just have to be careful not to breath the dust. I have been using this for ticks this past summer with good results.
I get more ticks than my dogs do and I have 8 of them.
Diane Stacy
After what I’ve read about bravecto I would never give it to my dog again. I did it once and then red and never again and I also put him on play for 2 weeks bentonite clay to get out of his system.
I gave my 1 1/2 year old dog Bravecto today for the very first time. I usually read about the drug before giving it to him and today I made a mistake of not reading up on it. After reading all your comments here, it is clearly not a safe drug to be giving our dogs. How do I get the drug out of my dogs system before it can do some serious damage?
Christina haylett
I gave our dog bravecto last spring. He didn’t want to take it and I made him. The very next day he wouldn’t eat his food or treats. He was a 60 pound lab and loved to eat until I gave him bravecto.5 months later he was dead. He slowly declined and was never the same after giving him that drug. I didn’t research it before I gave it to him. I figured if it was at my vets it must be ok. Please be very cautious about this drug.
Kimberly Alt (Admin)
I’m so sorry for your loss, Christina.
I recently gave my lab a chewable and surprisingly I had to break it up and mix it in his food to eat it. When doesn’t a lab eat! Now a week later, I’ve had to clip him and treat his skin irritation daily with cortisone cream and medicated washes to keep him from chewing him myself to bits. I too will never use it again
Currently trying to save our yorkie , had bravecto 5 days ago and his kidneys are shutting down . Going to the vet 2 times a day with iv fluids , vitamins . HAS ANYONE HAD THEIR DOG SURVIVE ?!? What were the treatments
Lucy kite
There’s a Facebook group on Bravecto with lots of information. It’s recommended you detox your dog.
I am so sorry to hear this. My little Maltese died from this a few weeks ago.
CC | Saving Cats, Dogs and Cash
While I have not personally lost a dog to Bravecto, I have lost a dog to prescription meds so I know how painful it is to injure or lose a dog after doing something that you think will help them. My heart breaks for everyone who has gone through or is going through this nightmare with Bravecto. To those that have been affected negatively by Bravecto, please join the Facebook group titled ‘Does Bravecto kill dogs?’ and share your story there to help others. At the moment, the group has 42k members. If your dog is currently suffering from the side effects of taking Bravecto or you suspect your dog is, I know that group has a detox protocol that they recommend. I’m sorry I don’t have it or I’d share it here. Please don’t let your dog just suffer from the side effects, as this is a long-term medication meant to stay in your dog’s body and continue killing fleas and ticks on a long-term basis. Detoxing is necessary to get as much of that poison out as possible so your dog can start healing.
I gave my Havanese Bravecto three days ago. He has been throwing up since. He goes to the vet tomorrow. First time he has ever thrown up. I know it is the Bravecto.I will never give him this horrid medicine ever. It kills dogs.
The vets never admit that it’s those poisons that they push on ppl to give their pets . It’s all about the money for them!! Same w the over vaccinating!!!
Love my dogs
Thank you
My two year old mini poodle was given a bravecto chew on 8/1/2018; it was not his first one. Two hours later, he was laying on the floor and when got up, his hind legs were wobbly. He remained lethargic for several weeks, experiencing twitches in his legs and difficulties on standing. His labs showed elevated liver enzymes and his symptoms worsened to include confusion, staring into space, not knowing who I am, not responding to his name or commands, and periods of vomiting and inability to drink fluids. I am still in a wait and see mode as to what the outcome will be, but regardless, I will never again use this or any other pesticide on either of my dogs.
Jackie Sawrantschuk
my dog also stares in corners, loss of hearing, hindend falls under her at times, sensitive to being touched
Kristy Sherman
Hi Jackie- your post caught my eye. My dog took Bravecto 4 days ago (not her first dose) and is all of a sudden staring into space, acts confused, wont walk down or walk up the steps and I also went to touch her and she basically screamed like it hurt her for me to touch her. My heart is breaking because I feel like it’s the Bravecto that is causing this. How is your dog doing and did she/he ever snap out of it and go back to being normal? I don’t know what to do. Any advice would be greatly appreciated.
Take your dog immediately to a holistic vet ask fo
Take your dog immediately to a holistic vet ask for a detox similar to rat poisoning.
How is your dog doing ? Our family dog had it 5 days ago , still trying to recover
I have a nine year old border collie mix. He has had issues with seizures on/off for the last 4 years. He is normally very happy, active and very energetic. Typical Collie!
Then, these “episodes” started occurring a few+ times a year. He would seem fine, then look scared and weak. Then he would lose control of his muscles and either fall over or not be able to get up. Drooling became excessive and his eyes looked dialated and “lost”. He would lose his bladder and shake uncontrollably. These episodes would last for about 5-30 minutes; leaving him tired and weak. I have tried to correlate the episodes with medicines, food, weather, seasons, activities, etc. He has also had episodes of itchiness/scratching. We have not noticed any dry patches or redness. (I thought it could be the Bravecto wearing off and he had a flea or two?) I have taken him to the vet for regular visits; as well as additional visits when the earlier seizure-like events occurred. We hoped to diagnose “what” happened to treat or prevent further episodes. We ran test and all was good. Fortunately, he doesn’t have enough seizures to warrant sedation-type meds so we did “nothing” but hope that his last episode was just that— his last.
Our vet has also pushed Bravecto for him during this time- even after our concerns about the med were raised at each visit. He kept assuring us the medicine was safe. It is expensive and the rebates were hardly worth the effort it took to receive! But through all our complaints and concerns, we were still assured it was our best & safest option. My rationale was it was tested and approved by a reputable pharmaceutical company!?! Plus, our dog even liked taking it … it was his “treat”!
Our dog’s last episode was two weeks after giving him his last dose of Bravecto – – two months ago. Can I 100% say Bravecto was the cause of his seizures? No! Will I give him another dose of Bravecto? Absolutely NOT! I’m ashamed it has taken me this long to realize I probably, and literally, may have been handing him his poison!
Sadie Cornelius (Admin)
So sorry to hear about this experience!
Jenny lings
Last year my border collie Merlin suffered a bad flea infestation went to the vet who gave us
Bravecto tablet. A few days later he had a bad seizure he is 7yrs old and has never had a fit before. This was the first time I have used it and it is the last. He has had fits after using this bravecto for over seven months before they stopped. He has always been a healthy dog before this. I am convinced bravecto is the cause of this. My son has just got a puppy and has taken him to the vets yesterday and in this puppy pack they have given him is bravecto tablets I was very annoyed as this could have dire consequences for a 9 week old puppy.
My daughter’s vet recommended giving her French Bull dog Bravecto. He said it was safe and he used it on his dogs. After giving her the first dose, her dog started drooling and having seizures. She took her back to the vet. He did blood work and said she was in excellent health but had slightly elevated liver enzymes. Nothing to worry about. The seizures continued so he placed her on an anti seizure medication. The seizures stopped. When it was time for the second dose, my daughter hesitated but gave it to her dog trusting the vet. Her dog had 5 grand mal seizures in less then 6 hours. She rushed her to the vet. He put her on phenobarbital and 5 mgs Valium rectally. Five grand mal seizures later she was rushed to an Emergency ER. She was told there that her dog was in respiratory distress and the seizures had caused her to burn up inside. The only choice they had was to euthanize her. One day she was healthy the next day at 12:44 a.m. she was dead. I called Merck and filed a formal complaint. I also contacted the FDA and am filing out a complaint form with them. I got all her medical records. The problem is the vets don’t follow through in contacting the FDA about adverse reactions. Too much paperwork involved. It is up to us as animal lovers to take the bull by the horns and file the complaint with Merck and the FDA. I hope my daughter loosing a healthy dog because of giving her something that no one questioned was a severe reaction to a medication will save other dogs.
I am so sorry this happened and I am surprised that the veterinarian gave the medication after the apparent reaction to the first dose.
Did you ask your vet to follow up? Often in addition to paperwork, the company will require a post-mortem exam and other tests. We should partner with our veterinarians to let them know this is important and we are willing to do all we can to make sure the companies are aware and the reactions are on the record. When we have reactions to our own medications, we have to report them to the companies and FDA, my doctor has always provided the information for me to file the report. I am not aware of him filing forms but the company may contact the doctor because I provide the information on my doctor. Of course, there are privacy issues with people’s records and not necessarily with animal’s records.
Same thing happened to my dog. I’m sorry for your loss and hope your family heals from this terrible tragedy.
We have 2 West Highland Terriers. Our female started having ‘tremors, stumbling, shuddering, tipping over after having been given Bravecto. She also developed dry scaly patches on her skin in numerous places. Unfortunately, our Vet didn’t even record her ‘shakes’ in her file and said the scaly patches were most likely because that breed is prone to skin problems. She had never had anything like that before and when it first appeared 3 years ago, she was 12 yrs old. She started the shakes at the same time. I felt it was related to Bravecto as I knew Bravecto affects the neurology of the insect. The act tried to reassure me and said her limping was due to her age and arthritis. Because ticks are so rampant in Ontario, I gave it the benefit of the doubt. This year I gave both dogs the initial dose and we observed her tremors were worsening. Her character changed markedly as well. She started acting very insecure and sometimes seemed like she was a ‘few minutes behind reality’. The other disconcerting thing is she went deaf. I felt it was related to the Bravecto as well. I only found one other reference to Bravecto and deafness but there may be more.
In August when both dogs were due for their 2nd dose, I just couldn’t bring myself to give it to them. I just thought it absolutely does not make sense to give a chewy tablet filled with toxic insecticide to a pet that you dearly love and are trying to give the best to. Last Wednesday, the day before the FDA released their warning to the public that Bravecto causes seizures, tremors, stumbling and the like, I took the remaining 4 doses ( for both dogs) back to the Vet stating that I just couldn’t bring myself to giving them to my dogs. The Vet assistants were very dismissive and made me feel I was over reacting and didn’t know the facts etc etc. They even took the warning insert from the box to review the cautions from Merck, the manufacturer. I responded by saying ‘Do you really think the manufacturer, Merck, are going to list those side effects?’
I really did not appreciate the dismissive manner with which they responded to me. Even though for the past two years at our dogs annual check up, I clearly signalled that I felt the tremors and even the deafness was related to Bravecto, our Vet did not even record my intuitions in his notes.
My husband texted me the FDA public warning late Friday night, 2 days after I had returned the Bravecto to the Vet. I can’t begin to describe the guilt I experienced Friday night after the confirmation that the Bravecto causes seizures and tremors, stumbling and lack of coordination. Earlier that Friday morning, my female had great difficulty coming up the stairs outside. We had installed rubber mats both on the stairs outside and even in the house because with her tremors and lack of coordination ( again I remind you the Vet told us was old age and arthritis) she had great difficulty going up and down the stairs. When she did come in from outside after having had difficulty going up the stairs, she went to go down the stairs to our basement, which than God are carpeted, and fell about one third of the way down head over heel. She came sheepishly into the room, very disoriented after the fall and had one of the worst tremors I had ever seen her have which lasted much longer than any she has experienced before. She has then several times a day, like ‘shudders’ and trips over her own feet. Most times very unsteady on her feet, limping around and whenever she is standing, she is always leaning like the tower of Pisa. She just broke out with a new series of scaly patches at a few spots around her body with one large patch under her front leg.
I am devastated by the confirmation from the FDA about the toxicity hazard of this product. I can’t believe I made the intuitive decision the day before the Public Warning that I had returned the product to the Vet. I wish in my heart of hearts that I had followed that same intuition when I first had it 2 years earlier to not give it to them. My male has not presented like my female but he is 4 years younger.
I hope this helps anyone with identifying the symptoms of their own pets.
It’s just not worth taking the chance.
We are using ‘Cedarcide’ , a natural non toxic spray made from the Texas Red Cedar and NO, it is not the cedar oil that is dangerous for cats.
We have had great results with it over the last 12 years and sincerely wish we had simply stuck with it but when we moved to Ontario 4 years ago, we were overwhelmed with the tick crisis so thought we had better use the Bravecto because of the fear of Lyme disease.
I read reports from a vet in England who proved one dose of Bravecto can stay in the dogs system for even as long as a year! So even when you stop dosing them, they still have it in their system and will continue to present with the side effects.
Imagine giving the prescribed 3 or 4 doses! Imagine the concentration of the pesticide in their system!
Like GMO foods, Monsanto states that the pesticide Round Up that they use in their GMO’d seeds would not leak into the guts of the people eating GMO’d food but guess what, it does! Round up affects the ‘gut’ of the insect so you can imagine what it is doing to humans!
The American Paediatric Society tried to get the FDA to do something about it as they were seeing a huge increase of children presenting with serious intestinal disorders at very very young ages. Your intestinal health is the foundation for your immune system and now they are documenting that tour intestinal health has direct impact on your mental health.
We really don’t know what we’re doing,
do we?
I am sure the leakage of the poison in Bravecto is the same as the leakage of Monsanto ( which was recently bought out by Bayer pharmaceuticals )
They know what they’re doing for profit, without conscience or integrity and we, out of fear compromise our better judgement and feed poison to our beloved pets. Imagine, they were looking into making a Bravecto like tablet for humans like our neurology hasn’t been affected enough in this life.
No, we do not know what we are doing.
where do you get Cedarcide? It looks like it is only available in the US
My dog died please keep warning everyone
My one dog died and the other is stil showing symptoms for the past 5 months
DO NOT USE THIS PRODUCT! We gave it to our 1 year old English bulldog thinking it was safe because our vet gave it to us and recommended it, about a week later she began to not eat, lay around and sleep more then usual, and she stares into space like she’s not even there, DO NOT GIVE THIS TO YOUR PETS
My dog just started doing this 4 days after giving her Bravecto. Do they snap out of it? How is your dog doing?
Is your dog better? If not take the dog to a holistic vet, ask for a poison detox? Some do not snap out of it, my dog had inflammation in the brain and the intestinal tract issues. It’s started with lethargy, sensitivity to touch, and a strange look in her eyes something was wrong. No regular vet could help her because Bravecto doesn’t have an antidote and it stays in the system for a very long time (even the makers of Bravecto don’t know for sure, otherwise they would have an antidote on the packaging just like vaccines have). It breaks my heart, many terrible symptoms followed that are too gruesome to mention and eventually she was taken off life support.
Jo Downes
I gave my 4 year old healthy Labrador Bravecto and within 3 days he was having seizures. These happened daily for 2.5 weeks but have fortunately stopped now (he’s not had a seizure for 10 days). His bloods were normal when they were tested a week after taking Bravecto despite these seizures. I will never give him it again. I feel lucky he is still here and he seems not to have any long lasting effects.
My 1 year old Newfoundland was given his first dose of Bravecto then shortly after got his 1 year booster shots and had 2 gran mal seizures that night. He then proceeded to have 8 more gran mal seizures in a four hour period. They were so bad he suffered brain damage. We knew it was medicine related but did not know until now which medicine took our baby away. The damage is not reversible and the makers of this horrible medicine should be held responsible. I hope soon we will hear the class action lawsuit is being launched. They need to be stopped before they kill more beloved animals. I am sick of hearing their excuses and then getting the brush off from a vet. Don’t allow anyone to tell you to use this medicine. Please tell everyone you know and save a pet from harm.
Karen Shadle
See the newest alarming cautions from the FDA about neurological deterioration from Bravecto. News came out3 days ago. I gave Bravecto to my 15year old dog about 3 weeks ago. Within a few days he couldn’t walk well because his hind legs were weak; the following day he lost strength in his front legs. He developed ataxia and fell several times. He didn’t seem tsee right. He would walk into furniture, go to the closet door to be let outside instead of the back door. He PACED for 48 hours straight, including on the bed, which he just walked off the end of. He didn’t interact with me. Drooled. Doesn’t seem to be able to turn his head and look to the right. He hasn’t vocalized ONCE since this started. He is now more steady and sleeps at night. I saw him wag his tail for the first time yesterday, so there seems to be some improvement. Notifying FDA and Merck the manufacturer.
Isa Blue
I’ve just read many comments about Bravecto and, in my point of view, Bravecto is for plagues control in strong dogs. I’m not encouraged to give Bravecto to my old problem-dog because I’ve heard that it could cause few fatal intoxications.
Ava Swartslander
I gave Bravecto to my “Allergy Boy” a 7 year old Dalmatian—I will NEVER use it again! Within 3 days he was scratching so violently I had to put him on Apoquel to try to get it under some control. I do not like using Apoquel–but he was almost raw in places. Bravecto made our 1 year old Dalmatian itch and had no (itching) effect on our 10 year old Dalmatian. I will NEVER use it again! I would NOT recommend it for any allergy dog–it seems to aggravate the allergies.
This is happening to one of my three pit bulls. She’s the only one having side effects. She’s raw and nothing helps. I’m going to call her vet and ask about apoquel. Thanks.
Is he allergic to chicken too? We have a Dalmatian and i have the Bravecto th give our 3 dogs but now i am very nervous!