Dog Vomits After Trifexis

My Dog Vomits After Trifexis – What To Do Now?

Trifexis is a medication for treating heartworms and other parasitic infections in dogs. However, some dogs experience mild side effects after taking Trifexis. Vomiting is one of the side effects of this medicine.

Throwing up after Trifexis may or may not a cause of serious concern. It is nonetheless crucial that you immediately contact a pet-helpline or your vet for consultation.  He/she will tell you how to proceed and accordingly give another dose of Trifexis.

Scroll through to know about Trifexis, its side- effects, its alternatives, and more.

What is Trifexis?

Trifexis is a drug useful for fighting fleas and worms. It is also used to prevent future infestation in canines. It begins to eliminate fleas within half an hour of consumption. Trifexis is useful for almost a month against parasitic infections.

Trifexis is a beef-flavored oral medicine that can be given with food or otherwise.

Trifexis has been surrounded by controversy ever since its launch in the medicine market. Many pet parents have been complaining that Trifexis dose led to their dog’s death. However, no study could prove this. No direct relation has been found between the intake of Trifexis and their dog’s death.

Like every other medication, it has passed through certain stages before being circulated in the market. The FAD approves it.

Dog Vomits After Trifexis – What To Do Now?

If your pup throws up after Trifexis, then you must contact your pet or a Trifexis department immediately. They are the best to advise you on this matter. Make sure you provide all the necessary information to the vet.

Information such as how was the dose given when did the dog throw up-immediately after having it, an hour late, or more; should be told to the vet.  Your vet or the Trifexis consultants must also be aware of your furry friend’s size and breed.

Side Effects

Some common side-effects are:

  • Vomiting
  • Diarrhea
  • Lethargy
  • Dermatitis
  • Redness
  • Itching
  • Temporary loss of appetite

Vomiting and Diarrhoea are the most common effects of medicine. These side effects are mostly typical, and they do not put your dog’s life at risk. However, if your pet has some pre-existing health conditions, then the effects could be adverse.

It is therefore recommended that you provide all requisite information about your pet to the veterinarian. It will enable them to make an informed decision. Accordingly, the canine will be given Trifexis only if it’s safe for him.

Generally, serious effects of this medicine are rare. However, you must still monitor your dog and report any side effects or abnormal behavior.

Trifexis is not recommended for pups below 14 weeks of age. Puppies less than 14 years old may experience a higher rate of vomiting. Also, sick or senior dogs are more prone to its side effects.

Trifexis is also not recommended for pregnant canines and dogs with epilepsy. Thus, you should make sure that you disclose all the necessary information to your vet before giving Trifexis to the pup.

Allergic reactions is also a possibility after Trifexis. Make sure you immediately report to the vet if you observe any abnormalities.

Dosage Required

It would be best if you gave your dog at least one tablet every 30 days. The dosage depends on the size of the dog.

Trifexis is particularly given before and during the flea season. If the flea season exists throughout the year, then all year dosage of Trifexis may be recommended.

The dosage also varies depending on whether it is used for heartworm prevention or for treating fleas. In the case of heartworm prevention, the doggo should take the dosage once every three months. For flea treatment, Trifexis must be taken once in 30 days.

Signs of Overdose

Trifexis must be given in a prescribed amount. An overdose of this medication may lead to side effects such as vomiting, drooling, skin rashes, coughing, and lethargy.

It is advisable to contact your pet clinic immediately if you notice any of these signs. Further, it would help if you changed the medicine dosage for the dog in case of weight- gain.

Importance Of Heartworm Test

If your dog has already contracted heartworms, it can be dangerous to give Trifexis or any other preventive medicine. The pup must be brought back to full health before treating it with medications.

Medications will cause severe consequences like vomiting, diarrhea, and lethargy if the dog is already suffering from heartworm disease. Thus, you must check for heartworms regularly.


Heart Gard Plus and Nexgard are good alternatives to Trifexis. Along with heartworm prevention and parasitic treatment, these also cover ticks.

  • Heartgard Plus is a beef-flavored tablet that is effective against roundworms, hookworms, and heartworms.
  • Nexgard is another beef-flavored tablet that protects against fleas and ticks.
  • There are other FDA approved medications like Sentinel and Bravecto.

You must consult a professional before deciding on medication.

Key Takeaways

Whether Trifexis can lead to your doggo’s death or not is a big mystery. No scientific data has proven it. However, heartworms have indeed resulted in the death of dogs. It is clinically proven. Therefore, heartworm prevention is a must. There’s no other way there.

However, you do have an option to decide which medication you wish to give to your canine companion. Whether you want your dog to go stick to Trifexis or switch to an alternative depends on you.

There are many allegations against Trifexis. Pet parents have complained of seizures and dog deaths. However, none of these have been confirmed. If you are still concerned about the usage of Trifexis, talk to your vet. He/she shall be able to find the best option for your pet.

It would be best if you remembered that, like every human being, every dog is different. Thus, you must look at each dog’s specific clinic account before making any decisions for him.

Note if there are any adverse effects of a medication on your pet. Report this to your vet. Accordingly, make an informed decision about your furry friend!