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Sentinel and Comfortis Backorder

Flea and Heartworm Prevention Backorder

Sentinel – and now Comfortis – have been on backorder for much of the year, causing flea and heartworm prevention to be a hot topic around our office. Our receptionists joke that they can now give an explanation of the industry situation and our doctors’ replacement recommendations in their sleep! While we were hopeful Sentinel would return in the next couple months, we recently learned that Novartis will not ship the product until some time in 2013. Respectively, Elanco is extending their backorder of big dog (40+ lbs) Comfortis for at least another month.

YOU’RE tired of this situation and WE’RE tired of this situation, so we’ve come up with an alternative solution. We will happily sell 6 or 12 months at a time of these new recommended products with equivalent ingredients so you do not have to continue to make a trip to our office every month – unless you want to! When Sentinel finally returns to the market, Dr. Flood will reassess our options and make a medical recommendation at that time to provide your pets the best protection against parasites. Thanks so much for hanging in there with us!

Our Current Best Recommendations


If your pet regularly gets Comfortis and Sentinel for flea and heartworm prevention; we are now recommending TRIFEXIS + PROGRAM.*


If your pet regularly gets Sentinel and Frontline for flea, heartworm, and tick prevention; we are now recommending HEARTGARD Plus + FRONTLINE Plus + PROGRAM.*

*Pets with conditions such as heartworm disease, food allergies, flea allergies, or medication intolerance should seek advice from our veterinarians before changing prescriptions.


We continue to recommend REVOLUTION for all cats. This product has not been affected by the recent backorders. 

What's the difference?

There are lots of flea and heartworm medications out there and new products are popping up on the market all of the time. We work hard to scour through all the options, researching efficacy, side effects, and safety. Just to give you an idea, some of the current popular drugs on the market include: ivemectin, milbemycin, moxidectin, imidacloprid, spinosad, fipronil, lufenuron, s-methoprene, cyphenothrin, pyrethrin…! We’re not expecting you to know the difference between all these medications (never mind pronouncing them); that’s our job! Our doctors research and recommend the best medications that keep your pet healthy and parasite free.

Buy local!

I could write an entire book on why purchasing medication directly from our hospital (as opposed to a national pharmacy) benefits all involved, but I’ll keep it simple. Purchasing medication directly from your veterinarian ensures your pet gets the right products, helps keep our fees for medical services affordable, and supports your local economy.  We TRULY appreciate your business!

References (5)

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    Response: Kristopher Medler
    Daniel Island Animal Hospital blog about pets
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    Response: Krissy Kulp
    Daniel Island Animal Hospital blog about pets
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    [...] ons such as heartworm disease, food allergies, flea allergies, or medication int [...]
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    [...] s such as heartworm disease, food allergies, flea allergies, or medication intol [...]
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    [...] eartworm disease, food allergies, flea allergies, or medication intolerance shou [...]

Reader Comments (4)

Update since original post: The option to buy single doses of Sentinel via our online pharmacy has now been discontinued due to a fully depleted supply.

October 12, 2012 | Unregistered CommenterAbby Suiter

Update: Program White (46-90#) is now on full backorder from the manufacturer. We will deplete our supply this week. For the time being, this product can still be purchased on our online pharmacy, ePetHealth, as 6-packs.

Are there anymore supplies left. I have been trying to find it in something other than a 6 pack.

November 7, 2012 | Unregistered CommenterSteve

Sorry, Steve, I missed this comment until now! Which products in particular are you looking for?

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