Aa
Aa
A
A
A
Close
152264 tn?1280354657

Safety of old Frontline

Is 4-year-old Frontline going to be safe and effective? I just found some in the bottom of my cat drawer! Thanks!
6 Responses
931674 tn?1283481696
MEDICAL PROFESSIONAL
There should be an expiration date on the package--if its expired then I would not use it; pesticides can break down and become less effective or more toxic with time.
152264 tn?1280354657
Thanks so much, Dr. Coyner!
152264 tn?1280354657
Well... it dawned on me to check the Frontline Web site, planning to look up the lot numbers because I couldn't find an expiration date on the packages I had in the pet drawer (some with a vet's label from 2006). Here's what I found:

"FRONTLINE Brand Products do not carry an expiration date. We recommend storing FRONTLINE Brand Products at room temperature and keeping them sealed in their original packaging. If stored under these conditions, FRONTINE Brand Products will not expire."
931674 tn?1283481696
MEDICAL PROFESSIONAL
How intriguing, a product which never expires, good to know!
975364 tn?1283482643
MEDICAL PROFESSIONAL
Yes, most of the flea and tick meds don't have expiration dates as they have a very, very long shelf life as they are very stable.
152264 tn?1280354657
Thanks Dr. Lee. I guess they must be OK... the company would have no financial interest in saying "no expiration date" unless it was really true. (Because if they DID put an expiration date on the meds, people would throw out old ones and buy new ones... as it is, I'm glad I don't have to shell out any more right now, as we're still trying to get a diabetic kitty regulated! so numerous trips to the vet for glucose curves. Now I digress...)

Thanks again, doctors!

Nancy

You are reading content posted in the Animal Health - General Forum

Popular Resources
Members of our Pet Communities share their Halloween pet photos.
Has your pet ever swallowed your prescription medicine? Vet tech Thomas Dock explores the top 10 meds that harm pets and what you can do to prevent a tragedy from happening.
Like to travel but hate to leave your pooch at home? Dr. Carol Osborne talks tips on how (and where!) to take a trip with your pampered pet
The first signs of HIV may feel like the flu, with aches and a fever.
Frequency of HIV testing depends on your risk.
Post-exposure prophylaxis (PEP) may help prevent HIV infection.