New Drug to Prevent Fleas & Ticks On Dogs Approved

June 4, 2014

The Food & Drug Administration’s Center for Veterinary Medicine (CVM) announced yesterday that a new oral drug from Merck Animal Health to prevent fleas and ticks in dogs has been approved. It lasts up to 12 weeks! This is excellent news for those of us whose dogs have had problems with the spot-on flea & tick preventatives.

BRAVECTO is a chewable tablet that treats and prevents fleas and treats and controls 3 types of ticks – the brown dog tick, the American dog tick, and the deer tick. It also treats and controls the lone star tick. The approval is in cooperation with Health Canada’s Veterinary Drugs Directorate (VDD) under the Regulatory Cooperation Council joint initiative.  The drug will be marketed by Intervet, Inc, and requires a valid prescription from a veterinarian to purchase.

The most common side effects are said to be mild and transient gastrointestinal upset. Because of the terrible reaction our Gator had to a spot-on treatment a few months ago, I’m very interested in gathering information about this new drug. If anyone uses it and would like to share info about it, please leave a comment below. I know I will be following this one closely in hopes it might work for my dogs.

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{ 7 comments… read them below or add one }

Amanda Bennie June 4, 2014 at 3:39 pm

Excellent information! I just shared on our Clear Conscience Pet page.
Thank you,


Carol North June 4, 2014 at 4:25 pm

Amanda, be sure to read my reply to the question below for more info.


Lori June 4, 2014 at 4:03 pm

Just curious if you know what ingredients are contained in this new drug?


Carol North June 4, 2014 at 4:24 pm

Lori, I spoke by phone today with a representative from Merck and was directed to the following site:
Then click on “see full prescribing information for more. Under Adverse Reactions, there is info about controlled studies done with dogs. For the most part, reactions are few, if any. Near the beginning, under Description, it gives the ingredients – all hard-to-pronounce chemicals. Once this drug has been on the market for 6 months to a year, and if there are no reported problems, I’d certainly try it on my Bulldog. But because it does contain chemicals, I would not use it on my Weimaraner that suffered a bad reaction to Frontline in February. He could just be one of those few that can’t tolerate such harsh chemicals in his old age. But with a dog that can safely use the chemical spot-ons, it sounds pretty good. Again, I’d want to see a track record first. Hope this helps. Carol


Lori June 4, 2014 at 4:28 pm

Thanks so much for the info. I appreciate it as I’m always being asked about flea and tick meds. As a student of homeopathy and natural pet nutrition, I tend to stay away from pharmaceuticals. Thanks again!


Paul July 7, 2014 at 1:19 am

Is this new drug launched??


Carol North July 7, 2014 at 3:34 pm

Paul, I don’t know. Ask your vet about it. If he or she isn’t familiar with it, the information should be readily available through Merck.


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