|Barked: Mon Mar 18, '13 11:04pm PST |
|Yeah, the Interceptor/Sentinel shortage has been truly frustrating... I wish they would hurry up and start up production and distribution again! One of my dogs is sensitive to Heartgard(ivermectin), and we switched to Sentinel (milbemycin oxime with lufenuron- the latter is a flea egg inhibitor that is much safer than the flea pesticide in Comfortis) a while back- it has worked wonderfully for us and protected my dogs from both heartworms and fleas without any side effects.
Unfortunately, my vet has no stock left. I was able to call around town and found one vet who had a few boxes of the Sentinel in my dogs’ dosage size (2-10lbs), and he was kind enough to sell me two boxes when I provided him with the negative heartworm test results my dogs had gotten earlier that week from their annual exam. Honestly, if you haven’t done it already, it wouldn’t hurt to call around to see if you can find a vet that has any left- especially if you have a dog that reacts negatively to ivermectin.
Like Foxxy said, the only other heartworm preventative with milbemycin oxime as the active ingredient is Trifexis, which has Comfortis mixed in with it. I’m wary of Comfortis, as many of the severely negative reactions happen in smaller dogs; my smallest is under the weight minimum for dosage and my larger is barely over the minimum; I don’t want to risk the negative side effects and honestly, when using the flea egg inhibitor there is no need for an additional pesticide for fleas, because if they can’t reproduce, it is HIGHLY unlikely you will ever have an infestation in your house. Needless to say, it puts me between a rock and a hard place if I have to choose which to use when my two run out of their year supply and I sympathize with anyone already in that place (especially those with collies and collie mixes)!
Good luck… like I said, I’d recommend calling around if you know your dog is sensitive to Heartgard/ivermectin and/or Comfortis. Maybe you will get lucky- until then, let’s hope that Norvartis gets their butt back in gear… Truth be told I halfway wonder if there is some sketchiness going on between the pharmaceutical companies in terms of trying to gain a monopoly over heartworm prevention production… Elanco makes Trifexis; Merial makes Heartgard… Elanco and Merial have had a “strategic alliance that will leverage their products” for the past several years, at least in regards to medicine for agriculture and I would imagine it would be the same for pet medication as well. http://us.merial.com/merial_corporate/news/press_releases/11_17_2003 _Merial_and_Elanco_Alliance.asp
Between those two companies, they practically own the market at this point. It surprises me that they wouldn’t release AT THE MINIMUM a heartworm preventative that contained milbemycin oxime only to be able to fill the market demand for Interceptor.
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