What are the side effects of Seresto flea collar for dogs

What are the side effects of Seresto flea collar for dogs
Yüklenme Tarihi 20-08-2023

The Seresto flea collar is a popular choice for pet owners who want to protect their dog from fleas and ticks. The active ingredients in the collars, imidacloprid and flumethrin, provide protection for 8 months as they are slowly released over time. While many people find the Seresto flea collar to be an effective and convenient option for pest control in dogs, there are potential side effects that pet owners should be aware of.

Common side effects of the Seresto flea collar include skin irritation, such as redness or itching at the application site of the collar. In rare cases, these symptoms may become severe and cause hair loss or open sores at the application site. Contact with water can also lead to skin irritation if moisture reaches the area where the collar touches your dog’s skin. It is also possible that your dog could experience sensitivity to one or both of the active ingredients due to an allergic reaction. Signs of an allergic reaction can include excessive scratching, hives, sneezing and difficulty breathing. If you notice any of these symptoms after applying a Seresto flea collar to your dog contact your veterinarian immediately. Additionally, it is important to speak with your veterinarian before applying a Seresto flea collar if your dog has had any adverse reactions from topical or oral medications in the past.

Skin Irritation

One of the most commonly reported side effects of the Seresto flea collar for dogs is skin irritation. This happens when your dog’s skin is not able to tolerate the chemicals in the collar seresto flea collar and so it becomes inflamed due to contact with them. Symptoms of skin irritation include redness, swelling, bumps, rashes and sores at the point of contact with the collar.

If you do notice any signs of skin irritation on your dog, remove their Seresto flea collar immediately and seek medical help from a veterinarian. Your vet may recommend prescription medication or certain home remedies to ease your pet’s discomfort. It’s also important to ensure that your pup isn’t allergic to cats or other animals before using a Seresto flea collar, as this may worsen any existing allergies or sensitivities.

Hypersensitivity Reactions

Hypersensitivity Reactions are a possible side effect of Seresto flea collar for dogs. These reactions can develop in particular breeds or any dog with an underlying medical condition or even after a minor incident such as skin injury, contact with another pet, etc. Symptoms vary but usually include itching and redness of the skin, swelling of the face, and difficulty breathing. If your dog experiences these symptoms after using Seresto flea collar, you should immediately remove the collar and consult your vet as soon as possible to prevent further complications.

Motor Disturbances

Motor disturbances can be a possible side effect of using Seresto flea collars for dogs. Symptoms signs of motor disturbances caused by the collar may include excessive passing of water and restlessness, trembling, muscle spasms or twitching, and paralysis. Although these symptoms are rare and occur infrequently, they should be reported to your veterinarian if they occur.

If your pet experiences any bothersome side effects while using Seresto flea collars for dogs, such as motor disturbances, it is important to take them off immediately and consult with a veterinarian. Veterinarians have extensive experience in pet health and will be able to diagnose the issue accurately and recommend the best treatment plan for your pet’s individual needs.

Possible Neurotoxic Effects

One of the possible side effects of using Seresto flea collars for dogs is neurotoxicity. Neurotoxic reactions can be caused when certain pesticides or chemicals find their way into vital areas of the dog’s nervous system. This can lead to changes in normal behavior, difficulty performing everyday activities, and even muscle tremors and seizures. In some cases, the neurotoxic effects may become worse with prolonged use.

If you suspect your dog is having neurological symptoms after using a Seresto collar, contact your veterinarian immediately. It’s important to stop using the product until further tests have been conducted to ensure it’s not responsible for your pet’s symptoms. Also, make sure you follow manufacturers instructions on proper use – do not apply more than once every 8 weeks and limit exposure time to around 6 hours per day instead of leaving it on indefinitely.


While Seresto flea collar may offer protection against parasites, it can also have side effects, so pet owners should monitor their animal closely and take it off immediately if any adverse reactions occur.