Adverse Flea Med Reaction


My mom sent me a message today about her baby, two-year-old Maltipoo, Ace. He contracted a terrible skin bacteria infection from his Frontline Flea and Tick medicine. He takes it monthly and has never had a negative reaction until this last time. Ace had a tiny, red patch where the flea medicine was applied the day after the application. The vet told my mom it should go away but within two days, it was considerably worse. She took him in and it turns out, the area was badly infected and required antibiotics. Here are some pictures, so you get an idea what it looks like and what to look out for if your dogs take topical flea/tick medicine.

Ace in the flower bed.

Ace's infected area on the back of his neck.

Poor little Acie! He has medicine and is feeling much better now.

Our dogs take Comfortis, a flea/tick medicine in pill form. I fished out one of their old packages of topical K9 Advantix that states, “Individual sensitivies, while rare, may occur after using ANY pesticide product for pets.” While obviously true, my mom thought nothing of these warnings since Ace received the same medicine for months without any problems. Have your dogs ever had an adverse reaction to topical flea medicine?

Bottom line, if your dog experiences a bad reaction to flea medicine, take him or her to the vet and get it treated immediately!

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6 responses to “Adverse Flea Med Reaction

  1. Chancy, Mumsy and Crew

    Poor, sweet little Ace we are so sorry about the bad reaction and hope the spot heals soon. We used Frontline long ago and had no problems with the dogs but one of our cats had seizures ever time we put it on her so we stopped using it period. We have been using K-9 Advantix since for the dogs and Advantage for the cats with no problems. Hugs and nose kisses

  2. Poor puppy. Good advice. I know a lot of people who use Frontline and haven’t had that kind of reaction, but it is always in the back of my mind when we apply it. We don’t like to make our dogs into walking pesticide bombs, but sometimes we have no choice due to the kind of dogs they are and the nature of their work. We use it sparingly in the Spring or anytime they are going to be in an area with a lot of ticks. Tick born diseases worry me more then the fleas.

  3. Hi, I found you on the Monday Mischief Blog Hop which I also participate in. Just wanted to comment that I love your blog – very informative. Also, we use Comfortis for all of our dogs and LOVE it. I never use topicals anymore. I hope your mom’s dog is doing better. What a cutie!

  4. Chancy, I’ve heard about seizures- that sounds scary. Glad K-9 is working better for you! Wags and nose kisses back at ya.
    2BrownDawgs, I totally agree, unfortunately, we too need protection due to Miami’s climate. We love Comfortis, a pill form. It’s great and works 100% better than any prevention meds we’ve used in the past.
    Thanks for stopping by, Wag Tales and we’re glad you like our blog! We too LOVE Comfortis–nothing beats it!

  5. I’m glad Ace is feeling better. Bongo is lucky that fleas aren’t a problem in Arizona.

  6. Poor little Ace,

    That looks so painful! I’m sending him get better hugs!!

    My Mum was looking at flea and tick medicine again yesterday, we use K9 Advantix and haven’t had any problems, I haven’t heard of Comfortis, maybe we should check that out too!!

    Have a fun day,

    Your pal Snoopy :)

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