Seresto Collar For Dogs & Cats Reviews, Side effects

| November 28, 2017

Learn all about the seresto collar which is used for both the cats and dogs. Also learn about the reviews and side effects of its use.

Seresto is a unique polymer matrix collar that offers a continuous supply of two active ingredients: imidacloprid and flumethrin for effective 8-month protection against fleas and ticks. That’s one convenient, non-greasy, odorless flea and tick collar instead of 8 monthly treatments.

Seresto is indicated for 8-month prevention and treatment of fleas and ticks on small and large dogs, and puppies 7 weeks of age and older. Seresto also kills chewing lice for 8 months. Seresto is different from conventional flea and tick collars. It employs a novel blend of materials, enabling a safe, controlled, low dose release of active ingredients over 8 months.

This provides excellent protection for your dog, not only killing fleas and ticks but also repelling ticks before they bite which helps to protect your pet from the diseases these parasites can spread.

The active ingredients are stored within the collar. They are released in low concentrations and are distributed over your dog’s hair and skin surface for 8 months. As active ingredients wear off over time, Seresto for dogs continuously replenishes the skin and coat with a new supply of active ingredients. Fleas and ticks are killed through contact with the active ingredients no biting required.

Seresto Collar For Dogs & Cats Reviews, Side effects

What is Seresto Collar?

Seresto is an effective, reliable alternative to monthly flea and tick topicals. This dual-action collar repels and kills fleas and ticks for 8 consecutive months. If a flea or tick is repelled, it cannot attach and transmit disease-causing organisms. Seresto is a flea and tick collar for dogs and cats that uses exciting, innovative technology to release the active ingredients in controlled doses over an extended period of time. This means effective long-term flea and tick control without the inconvenience of monthly applications. Seresto protects your pet from fleas, flea eggs, flea larvae, ticks, as well as sarcoptic mange on dogs without odor or mess. It is available in three formulations for Small Dogs up to 18 lbs, Large Dogs over 18 lbs, and Cats of all weights.

Seresto Collar for Dogs

Simply outfit your dog with a Seresto Flea and Tick Collar for slow, steady release of 2 active ingredients – Flumethrin and Imidacloprid proven to kill fleas and ticks. There’s no need to remember monthly topical applications. Plus, you’ll enjoy peace of mind knowing your dog is protected from these dangerous parasites’ associated diseases for 8 months. Seresto is available for small dogs and puppies, for dogs 7 weeks of age and older and up to 18 lbs and for large dogs and puppies, for dogs 7 weeks of age and older and over 18 lbs. Seresto Flea and Tick Collars are odorless, water-resistant, and safe to use with your dog’s existing collar. Each Seresto Flea and Tick Collar includes 3 clip-on reflectors to enhance your dog’s visibility. Active ingredients: acaricide (tick killing) Flumethrin and insecticide Imidacloprid. Seresto for dogs can help keep them protected from fleas and ticks for 8 continuous months. The innovative Sustained Release Technology of Seresto provides effective flea and tick protection in an easy-to-apply, non-greasy collar.

Seresto Collar for Cats

You probably know that fleas and ticks can make life very uncomfortable for your cat. As parasites, they feed on the blood of your cat, leaving bites which can be painful. Infected fleas and ticks can also pass dangerous diseases onto your cat during this feeding process. With Seresto you can spare your cat all of this just finds out how to use it and protect your cat from fleas and ticks for up to 8 months. Kills and repels fleas and ticks for 8 continuous months in one easy-to-use, non-greasy, odorless collar. Quickly kills fleas within 24 hours of initial application. Re-infesting fleas are killed within 2 hours. Prevents tick infestations within 48 hours after application. Kills and repels re-infesting ticks in as quickly as 6 hours.

Seresto Collar Reviews

Seresto collar reviews are the good ones. Peoples are surprised by its working power. One says, “After trying many products on my little Maltese, I have been elated that the Seresto Collar has finally done the trick. The cost is well worth seeing my pup free of all the scratching and sleepless nights he was enduring. I highly recommend that you stop wasting your money on those other products and invest that cost into Seresto’’.

Seresto Collar Side effects

Seresto collar also have some side effects. Pets may experience some temporary irritation at the site of product application. If signs persist or become more severe within a few days of application, consult a veterinarian immediately. The Seresto dog collar ingredients can have side effects so let’s look at the effect that a Seresto flea collar for dogs may have, starting with flumethrin side effects. If your dog does react to flumethrin, Seresto collar for dog’s side effects may be varied. Side effects may include local dermatitis (skin irritation) with pruritus (itching) and erythema (red skin).

Seresto lethargy is also a recognized symptom. Symptoms will depend on the dose, the formulation, and the kind of contact (skin, inhalation, ingestion etc.). Flea and tick collar side effects of this nature are not common, however. Side effects from Imidacloprid use can include fatigue, convulsions, lethargy and difficulty breathing. Unstable gait and tremors can also occur, but again, are rare symptoms and not common side effects of flea collars.

16 thoughts on “Seresto Collar For Dogs & Cats Reviews, Side effects

  1. Angela Owens

    I put the collar on my cat and she has a really bad red blotch on her under neck. I have pictures but unfortunately an not send them. The collar was very expensive but I figured for 8 months it was worth it…now I wish I had stayed with Frontline! I did use it on my other animals and they are all fine so I am conflicted. Please advise. Thank you Angela Owens

    1. Bridget Ashley

      Same thing happened to my cat. She is pregnant too and developed horrible open sores under the collar. I put antibiotic ointment on her neck and wrapped a white cotton cloth around her neck to keep her from scratching the sores. It’s been four days now. The sores are still there but have dried up. I threw the expensive collar in the trash. What a waste of money.

  2. sharon stiner

    Just a heads up. Took our shitzu for a grooming and also purchased her a seresto flea collar which was 60.00. But so be it we wanted our fur baby to be flea and tick free. We saw after putting it on her she started licking herself and biting herself. Thought maybe she was a little bothered by the grooming maybe the shampoo so we gave her a bath. After a couple of days of having the collar on she started sneezing alot. Then not eating and not going to the bathroom. Thought the only think different was the flea collar. Took it off her and about 4 hours later.She started acting much better. She finally went to the bathroom after almost 24 hours she started eating and drinking after 24 hours. She is still sneezing but not as often and she is almost back to normal. We have never been so scared she is our baby we are both retired my husband is disabled and she is his life line. Dont think we will ever put a seresto collar on her again.

  3. Karen Horanic

    just got a Soresto collar for a 7 lb yorkie 2 days ago- he is not doing well- walking with his head down and vomited 6 times. Seems to be wobbly walking – so I am talking collar off of him ! Any chemicaLs ARE BAD- I REALLY DID NOT WANT TO GET IT- BUT He has been in so much misery having the fleas for months. I tried many natural
    ways to rid the fleas- and really none worked well. A little but not well. I refuse to take medications because of hundreds of side effects and other BS attached to taking medications you really do not need. My Dog means a lot to us and I need to get help for his fleas another way- again! Any ideas?

    1. sam R

      use Kleen Green, it’s enzyme based and kills fleas extremely well w no impact to pets. I got it from my holistic vet. you can order it from the manufacturer, Ginesis. its an extremely effective but non toxic flea killer in all their stages-adult, pupae, larve, eggs. also a really good cleaner around the house and great to use anywhere your pet sits and inadvertently leaves fresh flea eggs. call Ginesis and get more info. I doused by 3 month old kitten 3x/day w/saturaged paper towels, working dilute kleen green into her fur down to her skin. she went from infested to almost no fleas in 6 applications. now I just need to keep up to finish all the cycles started throughout the house. i also spray my bedding where she lays, her bedding, etc. you can also put the linens in the dryer and fry all flea elements that way, but I cant through all the rugs and mattress into the dryer. I will add Kleen green to my carpet steamer and tile steamer though. florida fleas are super robust ….but no big deal with dilident kitten dousing and home cleaning with kleen green

  4. Russell MacDonald

    Bought Seresto collar about two years ago. Our dog developed many open lesions on his body which cost us several Vet visits and about $1,000 in vet bills. Our dog never reacted to fireworks, gunshots(we live in the country) or loud noises Since his wearing the collar for a few days he now hides in a corner at the slightest noise even the beep of the coffeemaker . I have heard numerous similar tales from other dog owners even one dog dying and another going blind. We called their NON CUSTOMER phone number and was told “That is impossible.” I can not understand why there is not a class action lawsuit against Bayer.

  5. mary ann bossinger

    my dog has been wearing a seresto collar for about 6 weeks and now all of sudden that collar smells so bad we can hardly stand it and it smells like a chemical? please send some input.


    Horrible itching after a Petsmart employee suggested I try this Puppy scratching so bad , also makes our eyes water .. dont recommend…

  7. M. Willette

    My St. Bernard experienced seizures after 3 day use of Seresto Collar. Purchased Seresto Collar from Vet. Took collar off IMMEDIATELY after seizure and bathed her with large amount of water and Dawn mixed. Will NEVER use, again! No more seizures!

  8. Whitney

    I bought the soresto flea collar for
    My two dogs . My larger one seems to be ok for now but my smaller mixed breed dog started itching a lot more since I put the collar on 2 months ago. No fleas or ticks but itchy all the time . But I figured since they didn’t have fleas or ticks it was doing it’s job. He also had explosive diarrhea in middle of night all over the couches a few weeks ago but figured he just got into something. Still did not think anything of it until tonight. He had a seizure that lasted about 3-5mins. And now I am not sure if this was his first seizure since they are home alone during the day while we are at work. I did not even think of the collar until reading a bunch of reviews online . I had no idea ! I don’t know if it’s a bad reaction or if he ingested some as he plays with my other dog and bites his fur a lot . which I found out that the chemicals in it leaves a residue on their fur. I am scared for him I hope he will be ok and will take him to the vet tomorrow even though we really can’t afford it but will do anything to make sure he is ok . Any suggestions on if I should try and get my money back ? Should I take it off the larger dog too even though he hasn’t had any side effects ?

  9. Bob Tracey

    Our Pomchi (14 1/2) is experiencing some of these side effects and the collar is coming off. Unstable gait, sneezing, hot spots/itching (no fleas), vomiting…never again. I should have known, Bayer was responsible for experimenting on concentration camp prisoners in WWII, so why would they care about a family pet. 🙁

  10. Janet

    I have had the collar on my Belgian malinois for 2 months and his skin looks terrible – Black skin patches with red skin, and looks inflamed. At first it was just on his belly. Now it’s on his paws and lower legs and he’s constantly itching and biting where he can reach. Now I have noticed dry patches on his face and a black dry patch on top of his head!! I will be removing the collar and see if his skin improves. I even changed his food to sensitive skin with salmon oil, and it hasn’t helped. When he scratches, there are flakes of skin coming off. Has anyone ever had this problem?

  11. Charles Jacobs

    One of my dogs, my Chihuahua-Mix is vomiting frequently. I had x-rays for him and nothing was found. He also had an ultra sound and nothing so far explains his frequent vomiting. Is it possible that the Seresto flea collar could be causing this. It does mention that a side effect could be vomiting. Could you please comment on this.

  12. Diana Holland

    How do I find out who I can talk about these collars my dogs even had worse reactions I think it is too late for my older dog we had him to the vet a year ago and they couldnt find out what was making him get sick I have used for serveral years help

  13. Sheila DeBoer

    I have rough coated collie, She has open lesions on her ears. Severe redness blotches and itching. I feel so sorry for her. I took the seresto collar off of her and now waiting to see if she heals. I also had to take her to the vet, we ran allergy test and complete blood panels with no results.

  14. Raven Martin

    Has anyone had their dog develop cysts? We’ve been using these collars a long time and while I cant say for sure…I think our dog started getting cysts around the same time as we started with the collars.


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