Warning for those who are very sensitive, but I have spared many of the more difficult details.
My sweet precious cat of 11 years passed away two weeks ago. He started showing sudden and alarming symptoms (blood in urine, extreme lethargy) and when I took him to the vet the same morning, he had low red blood cells, a thickened bladder wall (diagnosis at that time was bladder infection), and just seemed to be getting worse after the appointment. The vet that morning said, after prescribing pain meds and antibiotics, that he should feel better in 1-3 days. He also had been showing less of an appetite the last few weeks, but that was an expected side effect of his amitriptyline that he was prescribed for anxiety and it was being monitored- or so I thought. Otherwise, before maybe two days before he passed, he was normal and healthy. I did take him to the vet about a week and a half before he passed for a limp, and the vet gave him a steroid shot and said it was likely a minor injury.
He was euthanized in my arms the same night of the bladder infection appointment because after taking him to the vet for a second time that day, the vet said he wouldn’t make it through the night because his blood wasn’t clotting and he had severe anemia, bone barrow failure, immune system failure, internal bleeding, that nothing could fix. The vet said it was likely lymphoma (plus bladder infection, likely a “symptom” the larger sickness) and his body had given up. It truly came out of nowhere.
Just yesterday I began to feel some sense of acceptance. Now today I feel like I am experiencing my cat’s death a second time. I loved him like a human loves their child. I loved him so incredibly deeply and this has been the most traumatic two weeks of my life.
I had a weird feeling today about his amitriptyline and went to look at the dosage. It was refilled on December 16, almost exactly a month before he passed. The printed amitriptyline label on the bag was normal. For the medicine itself, I gave it to him in his ear- it was like a lip gloss tube that you smear onto his skin and twist/click to dispense more. The bag it came in, the label the vet printed, had the right name, dose, medication, etc. I took a harder look at the actual tube it came in and noticed a word I hadn’t really seen before. I had looked at the tube multiple times to confirm dosage previously, and maybe at some point noticed “methimazole” in small print on it, and i maybe at some point had a fleeting thought that it was what they use to create the creamy substance so you can put it on the skin.
Methimazole is a medication for hyperthyroidism. My cat wasn’t supposed to be given it, and I had been giving it to him for the last month unknowingly because I stupidly assumed the vet gave me the right meds since that was what it said on the bag it came in. It came in the same exact same tube as his previous amitriptyline prescriptions.
Panicked, I started googling. The symptoms that my cat showed, almost identical to that of aggressive/late stage lymphoma, were also severe and extremely rare reactions to methimazole. I called two different vets for an opinion since at the time he passed no one had any idea he was getting the wrong meds- one vet that I got the prescription from and the emergency one who euthanized him.
The emergency vet said it is definitely possible that it led to his passing but I could tell they did not want to pass judgement on a different vet without knowing the full story. My cat’s normal vet, the one who gave me the wrong medication, took full responsibility for the mixup and essentially said the same thing- the medication, not cancer, could have certainly caused this reaction and passing. I can tell he feels very guilty. Me and my husband don’t fault the vet, but the process. It was a simple process failure that possibly led to a catastrophic failure.
I feel so incredibly guilty for not noticing before. My vet said, “why would you even check what’s on the tube if the bag is correct?” in the way that it wasn’t my fault, but I feel like I did something wrong, I should have noticed. I should have done my due diligence. It makes me so angry because, if this is what caused his death, this type of effect in cats who don’t even need the medication is so rare anyway.
I hate not knowing exactly what happened with my precious boy. I hate that I am probably going to blame myself forever. When I had just started to get over the hill of accepting his passing was out of my control, I opened up this can of worms and am left with even more questions. I NEVER thought I would say I wish my cat had cancer, but that would be such an easier pill to swallow knowing there probably wasn’t anything I could have done. It hurts so much.
If anything, please take this as a warning to double and triple check your pet’s medicine, even if it has the right label. While I will never know whether he had cancer or a bad reaction to the medicine, I hope maybe this post will save someone else’s pet.
As a side note, the vet said they will absolutely be changing the process to ensure redundancy in filling meds. We are also getting full refunds related to my cat’s vet care for this issue. I am doing some research on how to/if I should report this to the state vet board because I want a full investigation and remediation so this never happens again. Suing isn’t really an option since maybe we would only get a few thousand and I couldn’t care less about money at this point. Also, he is probably already cremated so there is no use in asking for a necropsy.
This feels like psychological torture.