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Can Seresto collars make dogs sick

The answer to this question is yes, Seresto collars can make dogs sick.

According to the Environmental Protection Agency (EPA), some studies have found an association between Seresto collars and adverse reactions in a small percentage of pets. Possible symptoms of adverse reactions may include vomiting, diarrhea, decreased appetite and energy, skin irritation, hair loss at the application site, and even seizures.

Since proper usage of these flea and tick collars is key to their effectiveness and safety for your pets, it is important to read the manufacturer’s instructions before using them. It is also important to note that if you think your pet has had an adverse reaction to a Seresto collar, you should immediately remove the product from your pet and consult with your veterinarian.

What are Seresto collars?

Seresto collars are flea and tick prevention collars specifically designed for dogs and cats. They give the pet 8 months of protection against fleas and ticks. The collars contain an active ingredient, imidacloprid, which is a pesticide that has been widely used in animal flea and tick products since it was approved by the EPA in 2005.

The primary benefit to using Seresto collars over topically applied flea treatments is their much longer lasting protection — up to 8 months compared to 1-2 months with topical treatments. But how can we be sure these products are safe for our pets?

Safety has always been a concern with Seresto collars due to the presence of pesticide — especially in light of reports of cases where the collar caused serious adverse reactions in animals or even death. While there is no scientific evidence that Seresto collars directly cause severe illness or death, caution should be exercised when using any product containing pesticides on pets.

Potential Health Risks and Side Effects

When it comes to Seresto collars and their potential health risks, there is a wide range of opinions. Some argue that the collars are safe to use because they contain only very low or flea collar no levels of chemicals that could cause side effects, while other people warn against using them because they may contain ingredients that can be toxic.

Although not all dogs have had adverse reactions to Seresto collars, some do experience mild to more serious issues including coughing, scratching/chewing at the area around the collar, skin irritation and rashes, nausea and vomiting, fatigue, seizure activity and even death in severe cases. It is not yet known why some animals respond differently than others.

The best way to protect your pet’s health is by taking into consideration any potential risks before purchasing a Seresto collar or alternative pest-control product. Consult with your veterinarian before making a decision as they can recommend treatment strategies based on your individual pet’s needs and lifestyle. Additionally, regularly inspect your pet’s neck for any signs of infection or irritation from the device and discontinue use if necessary.

Tips for Reducing the Risk of Sickness from a Seresto Collar

Seresto collars are a popular choice for flea and tick protection among pet owners. However, there have been some reports of Seresto collars making dogs sick. The good news is that you can reduce the risk of your pup getting sick by following these tips:

1. Make sure you buy an authentic Seresto collar from a reputable source. Counterfeit versions may contain different chemicals that could be harmful to your pup.

2. It’s important to use the proper size collar for your dog’s neck size so that it fits snugly but doesn’t cause discomfort.

3. Remove any excess collar material after adjusting it correctly on your pup’s neck as it could be a choking hazard if left on too long.


While there have been reports of pets becoming ill due to wearing a Seresto collar, it is important to remember that any medical device has a potential to cause health problems in certain individuals. It is also important to take precautions when using these collars, such as checking the fit regularly and consulting with your veterinarian if you have concerns about your pet’s health.