Cheristin For Cats

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Elanco Animal Health

General Information

Cheristin for cats topical flea control is designed to kill 98–100% of fleas in just 12 hours. Quick and easy to use, this product is efficient and provides long lasting flea control.


Elanco Animal Health
Quick and Effective, killing up to 100% of fleas within 12 hours
Continues killing fleas for a full month after application
Easy to use, efficient and provides long lasting flea control
Features an applicator tip that is designed to be gentle to apply
Elanco Animal Health
Elanco Animal Health
Elanco Animal Health
Elanco Animal Health
Cheristin For Cats - 6pk by Lilly
Pet Products
UPCList - UPCListElement
Item Height
6 inches
Item Length
4 inches
Item Weight
0.1 pounds
Item Width
1.25 inches
Package Height
1.2 inches
Package Length
6 inches
Package Weight
0.1 pounds
Package Width
4 inches
Use only as directed.
ORM-D Class 9

Latest reviews

Pros: NONE
I had been treating my cats with Comfortis and then on to Cheristin for Cats for about 1-1/2 years beginning in late 2014.  She began to exhibit symptoms of toxicity about 6 months after the switch to Cheristin for Cats in early 2016.

She died a horrific death of neurotoxic paralysis in June of 2016.

Needless to say, I am heart broken and would NEVER RECOMMEND THIS PRODUCT TO ANYONE.

As for Elanco Pharmaceuticals, they are a very evil company and they deny that her untimely death was caused by this poison that they manufacture and distribute everywhere.  Shame on them.

I am not letting this one go.  The company is in denial of course as are many of the veterinarians that were involved in this specific incident as they are making a lot of money selling this poison at ~$25.00 a pop! I am telling everyone that will listen to me what happened to my poor beloved cat, including local shelters and feed stores and pet stores and anyone else that will listen.  I hope to see this product OFF THE SHELVES soon!


Jules10 I can't tell you how sorry I am for the loss of your beloved cat. Such a loss is devastating, especially if it was indeed preventable. I have only once given one of my cats a flea treatment years ago as a preventative, and I was shocked at how strong and toxic it was. Never having experienced a flea problem with any of my cat, I do not know if there are any alternative natural or holistic treatments that are effective. My comment is to mainly offer my empathy and hope, in time, you can be comforted by one saying that I love: Don't cry because it's over. Smile because it happened. You have had the privilege of caring for your loving cat and eventually you will be able to think of the wonderful times you had with her. But I know this will take some time. I give you my best.
I am still crying and I hope that GOD hears me. Elanco sickens me!  They are nothing but a corrupt greedy corporation.  I have been in contact with an attorney who did some research on this and told me that DOW Chemical invented this and sold it to Elanco.  It is not only used in flea treatments but may also be used in shampoos that you and I use as well! 
How do you like this news as sick as it is!
I'll smile again when they are in jail!  That is where all of them belong!
aww that's so sad poor Puddy cat bless  her at least she is no longer in pain is is so distressing when they are ill and then to watch them die before your eyes that hurts they are part of our family and when they go they leave a gap and it is just like losing a human relative IDC what anyone says its just as bad  we were so upset when our old boy buster went so  I feel for you i hope this company gets what is coming to them  my thoughts are with you <3
I'm so, so very sorry for the loss of your beloved cat. You have my deepest sympathy. That is such a horrible thing to happen to your sweet, precious kitty. I hope that you get restitution from the company that is responsible for this tragedy. That is why I don't like to use any flea treatments on my cats, especially the toxic ones. I hope that your pain will ease in time and that people reading this will not ever buy this product and this will help prevent this happening to any other pets.
So sorry for the loss of your beloved pet. I have told different rescue groups, and people, about what happened to my cat and did a review on Amazon. Who can we file a complaint with : FDA, etc.? I think it is really hard on hyperthyroid, cats with underlying conditions, cats with kidney disfunction, elderly and weak cats.
Fortunately, an M.D. has taken an interest in this situation.  There is a blog that is written and updated often. 
The link to my story with pictures of my poor sweet cat are at the link below.  I wish I could walk away from the horrible grief but I cannot.  It sickens me what has happened to her and I hate myself for allowing this to happen. 
The vet won't even call me back and when I reviewed the records, I could see they'd been trying to get another couple of thousand $ out of me and I'd still have had a dead cat.  They were seemingly unaware that my cat was exhibiting signs of being poisoned as were my other two cats!  All were lethargic and I was told this was normal and they just HATE this poison on themselves.  I had not put any on the remaining two for some time now and one bit me on my hand and it became infected.  That is out of character for him and also a symptom of toxicity -- abnormal behavior.
These people deserve to rot in a hot hell if there is one for they know exactly what they are doing!  Shame on them is right.  As for me, I am a pathetic case indeed and feel just horrible!
Here is the link with my story with the pictures:
I hope this helps to save at least one more cat in the world! 
Thanks to all of you for your condolences and please continue to spread the word and I will try to update my site as I am able. 
Thank you for sharing this information. I agree people like that should burn in hell. I personally appreciate the warning. There are no words that can comfort you through something like this. I fear anything I say won't touch upon your reality. But I won't ever use this drug on my cat and I will warn anyone I can. Thank you on behalf of my cat for being so proactive about this in such a terrible time.
To Catlike1 and others here:
Your condolences and thoughts are appreciated greatly.  I feel so very alone now.  I feel as though I have no recourse and the more I research this, the worse the findings become.
This whole thing has become a nightmare for me.
I have now found this:
Spinetoram (XDE-175-J) - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
Additional Resources About This Chemical Class and Use TypeHistorical Use of this ChemicalTop five crops and sites for this pesticide in CaliforniaOranges   Leaf Lettuce   Head Lettuce   Table and Raisin Grapes   Strawberries  
View All Crops and Sites 
So, spinetoram is being used on these crops in California?!!!
All I can do is continue to spread the word and now WE know why our pets and the bees and the birds and the rest of us creatures on this earth are dying.  It is because of these highly toxic pesticides being sold that are not well-researched nor studied and many are sold over-the-counter to anyone! 
Thank all of you once again and please be careful. 
Thank you snowpawprint.  I am still devastated to say the least.  I wish I knew what do say and/or do.  I keep telling myself that she is in a better place now but selfish me is sad and wants her back w/me and that is not going to happen.  My grief is overwhelming and I am being treated like a crazy person by too many people that I run across.
They say to me it is an isolated event.  Oddly, as I was leaving Safeway (I just got home) the woman in front of me said her dog had seizures from this same stuff and she never gave the dog anymore of it so no, it is not a figment of my imagination.
It is a very grim reality and I just hate the way it is being covered up! 
I finally got through to the vet and they had to report it to Elanco.  The manager of the place never bothered to even say they were sorry.  All they could talk about was my failure to bring my cat back to them for more testing.   It is a shame that they did not recognize that my cat had all of the symptoms of being poisoned! 
It angers me something fierce but it is like banging your head against a brick wall trying to get others to simply listen.  I guess they'll figure it out when their cat or dog falls ill and/or die as mine did. 
My poor dear girl is gone.  That is all I know right now. 
Thanks again friends. 
So sorry for the loss of your beautiful cat and my cat, Otis. I didn't speak directly to my vet, but spoke to her tech, and she said the vet said Cheristin was safe and I am pretty sure they sell it at the clinic. I don't know how else to get the word out, something like for pets. Amazon is back selling it and giving it a 4.4 star. Our reviews are still there though.
I did put Advantage II on Skye's (photo) brother, who still had fleas after Cheristin, and he seems to be doing fine. I put it on six days before the month was up and even though you try to get it where he can't reach, he scratched with his paw and licked his paw twice, gagging and drooling for a little, but that was soon after I put it on him. Today, he seems fine.
Just because some technician says it is safe doesn't mean squat to me!  Said technician doesn't have a DEAD cat does said person?  These greedy people will tell you anything at all to sell you something.
Seriously, does it make sense to have an insecticide that will KILL horses, bees, etc. on YOUR cat?  No it does not make any sense at all to me.  My cat was not an insect, it was a mammal known as a CAT.
Let them continue to peddle their toxic goods. 
Awareness is the key to this nightmare of a problem. 
I'd go so far as to turn them in for pushing this poison.  Yes, I would go that far and yes, I WILL GO THAT FAR!
I got a call from an old friend last night.  She has a cat that she loves so very much named "Fluff".  Well Fluff had developed feline allergic dermatitis (flea allergy) and the vet had Fluff on Cheristin for Cats.  She had run into me right after my cat died and I was a mess and was crying.  She asked me what was wrong and I told her and she said, "Oh no!  This is what they've had me putting on Fluff!  Do you think I should stop?". 
I advised her to STOP immediately and told her what the early signs of toxicity were (hiding, etc.) and she was hesitant to discontinue use of Cheristin for Cats.  However, she said my face crying was a burned image in her mind and when she took Fluff back to the vet the other day, they gave her more Cheristin for Cats to put on Fluff.  She pushed the vets hand away that had the Cheristin in it and said NO!  I do not want this poison and my dear friend is so sad!  Her cat has died from this garbage and you hurt my friend real bad and killed her dear cat!  The vet went on to tell her I was crazy and she told the vet that I was anything BUT crazy and then told the vet that "Hey you are pushing this poison and it is not even approved by the FDA!". 
She said that after that last statement re: the FDA the vet was like nailed to the wall and had no come back.  If I have saved just one cat named Fluff (as symptoms of toxicity were beginning to emerge) I am seeing results in my quest to shut this evil poison pushing company DOWN. 
May Fluff live a long long life!   Thanks to all that have had the guts to push the poison back into the hand trying to give it.  This poison will kill if it has the chance to build up to toxic levels and you don't even want to really know what it is like to witness a case of neurotoxic paralysis! 
I still cry every day.  Will this ever stop?  God help me! 
So so sorry that this happened to You! No one deserves this.  It's so disappointing that some products are Not safe are being Sold :(  Whats wrong with people!?! Dog food gets pulled immediately..hope you can get lots of support to fight this battle on behalf in honor of your beloved baby.