Thyroid Poisoning Average Cost

From 66 quotes ranging from $300 - 3,000

Average Cost

$750

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What is Thyroid Poisoning?

Thyroid hormones are a vital part of the day to day function of the body. Heart rate, body temperature regulation, and oxygen consumption are just a few of the systems that work in sync with the thyroid. Thyroid problems in animals and people are not uncommon making this type of medication a normal item in the medicine cabinets of many households. Whether your pet gains access to your supply of medication or if you accidentally give him to much of his own prescription, veterinary care will be needed to ensure your pet remains in good health. Studies show that canines can function quite well and have a high margin of safety when it comes to overdose. However, toxicity from the consumption of a very large amount is possible, though rarely documented in veterinary literature. A few of the symptoms of toxicity can be tremors, vomiting,and diarrhea. Treatment is necessary in the case of severe poisoning, and may include medication that must be administered in a hospital setting in order to control symptoms.

Dogs and humans both can be prescribed thyroid hormones for conditions such as hypothyroidism. The hormone levothyroxine (a synthetic form) is the typical choice for treatment in canines and humans alike. Overdose of this hormone can cause toxicity in your pet.

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Symptoms of Thyroid Poisoning in Dogs

Symptoms of thyroid poisoning in dogs may appear between 1 and 9 hours after the pills were ingested. A mild case of toxicity will involve hyperactivity and an increase in heart rate. The ingestion of a large number of thyroid pills may mean the following symptoms can appear.

  • Excitability
  • Nervousness
  • Excessive panting
  • Lethargy
  • Vomiting
  • Diarrhea
  • Abnormal reflex of pupils to light
  • Contraction of the pupils
  • Tremors of muscles
  • Rapid heart rate
  • Rapid breathing
  • Difficulty breathing
  • Aggression

Types

Toxicity to thyroid hormones is typically an acute event, meaning it occurs as the result of a large ingestion of pills. Chronic overdose can occur over time; though studies show that the liver and kidneys can handle and disperse the hormone well even in cases of overabundance. There is also evidence that thyroid hormones have a slow gastrointestinal absorption allowing for a period of toxicity that is not apparent right away.

Causes of Thyroid Poisoning in Dogs

  • Dogs can tolerate and in fact, need a higher dose per weight than humans do in order for the hormone to do its job
  • An enzyme in the liver (alanine transaminase) has increased activity; this is why underlying liver issues can exacerbate the poisoning
  • Symptoms will vary in dogs but are most commonly mild to moderate; severe toxicity is rare
  • Medications may react adversely to an excess of the hormone
  • Concurrent heart problems can make thyroid hormone toxicity more symptomatic

Diagnosis of Thyroid Poisoning in Dogs

As with any poisoning by medication or substance that is known to be dangerous when ingested, bring along the container or packaging that contained the thyroid hormone pills as this will be helpful for the veterinarian to see. If you have an idea of the time of ingestion this is important information to relay to the veterinarian because whether or not the team induces vomiting depends on the timing (less than 2 hours prior).

Clinical signs relevant to thyroid poisoning will be considered as the physical examination takes place. Your dog’s heart rate and blood pressure will indicate how severe the toxicity is and blood work will reveal T4 levels and other markers like electrolytes and liver enzymes. The treatment protocol will be determined by the level of poisoning indicated in the diagnostic process.

Treatment of Thyroid Poisoning in Dogs

A pet who has experienced significant toxicity due to thyroid hormones will be hospitalized. Fluid therapy will be commenced to aid in the administration of  medications for nausea, vomiting, or diarrhea if needed. Additional drugs could include those meant to regulate symptoms like a rapid heart rate and uncontrollable tremors, and those which will help to eliminate the excess thyroid hormone from the system. 

If emesis is within the two hour time frame, this will be initiated along with other gastric decontamination measures such as activated charcoal administration. Oxygen therapy will be provided if beneficial; at the same time the fluid therapy may be slowly continued and the heart activity will be closely watched.

Recovery of Thyroid Poisoning in Dogs

A dog without underlying conditions and who has been treated in a timely manner will have a good prognosis for recovery. Once your pet has been released from the care of the veterinarian, he can return home provided that he has a comfortable, quiet resting place. Continue to monitor him at home and be certain to contact the clinic if your dog’s behavior changes in any way that causes you concern. For the future, keep all medications, dangerous substances, household products, and forbidden food out of reach of your pet and if you have in your possession medication prescribed for your dog, follow the instructions very carefully.

Thyroid Poisoning Questions and Advice from Veterinary Professionals

Jake
Pomeranian
7 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Frequent Urination

Hi,my dog was diagnosed with a thyroid issue about 2 years ago with a test and my vet put Jake on Thyro-tabs but at half of 0.1 mg once a day and he was 8 lbs then and he started getting bacterial infections continuously for the next 2 years never given anything but antibacterial shampoo and baths every week and it did nothing. He just started having seizures a year ago and he has one now every 6 months and I don't know what caused it and my vet hasn't put him on anything for it because they aren't frequent enough. He has what I believe is yeast issues and allergies because he constantly licks and chews his paws and feet and scratches his nose with his foot. He has been shaking his head now pretty often and I have taken him to the vet about 7 times recently to see if it's an ear infection and first my vet said he saw yeast and wax in his ears and gave me Zymox drops to use for 3 days which helped at first but then he continued shaking his head again. Visits again they kept saying his ears are not red and now look clean so we have no idea what is wrong. So they gave him an antibiotic in his ears one visit, then an antibiotic shot another visit, then 2 other visits steroid injections each time which he has gained 2 lbs from very fast (now he is 9lbs) and another visit the vet gave me Temeril P saying it was allergies and I gave him half a pill that night and fourty five minutes later he had a really long terrible seizure and the vet was closed!! 3 days later he had a 2nd seizure because the Temeril P was still in his system and now my vet won't definitely prescribe me any medicine for my dog probably for the rest of his life.. unless I find a new vet. But I saw another vet same Office and she told me the correct dosage of thyroid medication my dog should have been on in the first place. She said 1 mg once a day or can even go to twice a day (2 mgs) so I gave him 1 mg once a day and the bacterial infections suddenly went away after 2 LONG years!! But then he started after about 2 weeks of that having frequent urination and drinking lots of water so I started to worry!! I brought him back to the vet thinking it was a UTI but it came back fine so yet again NO answers. And he also has been breathing heavily in his sleep suddenly but seems restless before hand. I decided to try giving him the extra bit of thyroid med so I have been giving him 1 1/2 mg(total) of 0.1 mgs twice a day for the past 3 days and he has gone back to his normal routine of going out potty 3 times a day instead of the recent 6 times. But today in the afternoon he didn't want to go out like he used to always before so I took him out at dinner time and when he peed he only went a small amount considering he went out at 7:30 am and then 5:30 pm (10 hrs later) my question is could I be giving him too much thyroid medication? And actually now he has calmed down at night and does not breath heavy anymore while sleeping just like before...so that's why I'm not sure and about getting his thyroid levels checked... I plan on doing that but not for awhile because I don't have ALOT of money and I have to save up for it unfortunately :( but THANK YOU for your help!! I just don't want to damage any of his organs or anything because he has enough problems already and he obviously can't have any medication in the future because of the seizures so that's why I have to just try and not hurt him anymore than he already is... THANK YOU for responding I really appreciate it ALOT!! :)

Dr. Michele King, DVM
Dr. Michele King, DVM
1059 Recommendations
The starting dosage for thyroxine medications in dogs is 0.1 mg per 10 lbs, so the 0.1 dosage for him was appropriate. Every dog is different, and that is why we test thyroid levels to see where their thyroid levels are once they are on medications, usually every 4-6 weeks until they are stable. Thyroid medications can cause panting, increased urination, and anxiety initially until levels stabilize, and it is possible to give too much thyroid medication, yes. I hope that everything goes well for Jake!

SORRY to bother you again.. After 3 weeks on the higher dosage of 0.1 mg once a day Jake did fine for 3 weeks then the 4th week started heavy breathing, frequent Urination and drinking lots of water. My question is do you think that dosage could of been too high and it just took 3 weeks for the symptoms to appear? Oh and he was restless too... because that's actually why I had mentioned about giving him the 3/4 of a 0.1 mg pill and see if he did better on that? But I have been already giving him 1 1/2 mgs now and I don't want to just jump down to 3/4 mg... should I taper down for a few days if you recommend I try that and see how he does? Is it bad to keep switching dosages? Because if so, I don't want to keep doing that... Thanks for your help!! :)

THANK YOU for your reply.. I don't know if you misunderstood but Jake was first prescribed NOT a 0.1 mg tablet BUT just a half of that mg which is barely nothing and 3/4 LESS than what he actually should of been on for his weight. He wasn't actually put on the correct dosage of 0.1 mg until 2 years later by a different vet and after he then had developed seizures and extremely bad allergies and recurrent ear infections that they won't even treat him for because of the seizures. And with the start of the 0.1 mg of thyroid med he did great for 3 weeks with no symptoms UNTIL he had 2 steroid injections back to back and one dose of Temeril P and then this last week he started with the heavy breathing, frequently urinating and drinking lots of water so since it happened later on I suspected it was weakened immune system from the steroids and was worried he could possibly have diabetes or Cushing's now. But I gave him an extra half of the 0.1 mg thyroid at night (so 1 1/2 mg total) and in 3 days the symptoms all stops pretty much. (Heavy breathing, frequent Urination, & lots of water) so I am kind of confused as to what that's all about really? It seems kinda strange that would happen that way... SORRY to continue my question but I had to try and re-explain it again because I thought my first message might of been a little confusing maybe. But are you able to explain at all why this might happen? And should I keep him on the 1 1/2 mgs with no symptoms or maybe go try going to 3/4 of a 0.1 pill? THANKS for your help AGAIN!! :)

Actually I do think the seizures started from using Revolution because I noted it at the time and I used it right when he had his first one and then I believe I stopped using it there after. And his bacteria infections started after him getting a very short haircut at a groomer and she cut off a mole or skin tag. But SORRY my question is SO LONG!! :(

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Greyson
Akita Chow
11 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Thirst, hunger
Thirst

Medication Used

Levothyroxive .8 bid

My 11 year old Akita-chow has had long term hypothyroidism and colitis with any food changes. He is on levothyroxine and a consistent diet. He has developed excessive panting in the heat, excessive water drinking and urination with increased hunger. We are waiting for lab work to come back including chemical profile, t4 and Tsh. Any thoughts. He has lost a little but of weight but no depression, very playful and no other symptoms at all. His coat is unchanged and no neuromuscular symptoms.

Dr. Michele King, DVM
Dr. Michele King, DVM
1059 Recommendations
Thank you for your email. If Greyson is having the signs that you are describing, a lab panel is a good screening panel. Once you get the results back, you'll have a better idea as to what might be going on with him, and if he is generally healthy. I hope that everything comes back normal, but it if doesn't, your veterinarian will be able to guide you as to the next best step.

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Benji
Australian Shepherd
3 Years
Fair condition
0 found helpful
Fair condition

Has Symptoms

none

Medication Used

Armour Thyroid 30 mg

My Australian Shepard ate about 8 to 15 pills of my wife's Thyroid medication. Not sure how long it's been, we are currently monitoring his activity. He seems to be ok for now, but my wife and I are concerned and want to know our best options.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Thankfully one off thyroid medication overdosing usually goes with a little hyperactivity and a little lethargy afterwards; also, the therapeutic dose for dogs is much higher than in humans so that is also a plus. But monitor Benji for now, however if another incident occurs in the future induce vomiting with 3% hydrogen peroxide within an hour of ingestion. Any concerns, contact your Veterinarian for Pet Poison Helpline. Regards Dr Callum Turner DVM www.petpoisonhelpline.com/poison/thyroid-medications/

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Moses
mixed breed- lab, dachshund, terrier
9 Months
Mild condition
0 found helpful
Mild condition

Has Symptoms

rapid heart beat, vomiting

My 9 month old dog, about 20lbs, ate MY thyroid medicine last night. It was a 30 day supply of .112mg levothyroxin. We did not know this at the time and just found the empty container this morning. Looking back, he was both overly animated with rapid heartbeat and then lethargic. He woke us up with vomiting early this morning. Aside from the above, he seems to be acting normally. How concerned should I be right now? How can I help him at home when it's Sunday and the veterinarian is not in the office?

Dr. Michele King, DVM
Dr. Michele King, DVM
1059 Recommendations
Thank you for your email. Moses did eat enough levothyroxin to cause signs such as tremors, increased heart rate and behavioral changes. If He is still vomiting or showing those signs, you should see your veterinarian today to determine if he will need supportive care. I hope that he is okay.

My 12.5 pound Bichon Frise just ate one of my Should I be doing 112 mcg Lexothryrine for low thyroid,,,, how bad panicking should I be do doingy😳😮😢

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Bebo
Maltipoo
14 Years
Fair condition
0 found helpful
Fair condition

Has Symptoms

none

My dog 14 pounds ate 4-5 extra synthroid pills he takes .10 dosage a day. He's not showing any symptoms but should I take him into the vet anyway or wait till he shows symptoms?

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
A one off overdose of four or five times the normal dosage of Synthroid (levothyroxine) is unlikely to cause any long term issues; generally you may see some overactivity or other behavioural changes but monitor Bebo for now, but if you are concerned you should visit your Veterinarian. Regards Dr Callum Turner DVM

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Baloo
Mix breed
2 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

pulse

My dog ate 29 pill of medicine Tirosint 50mg (T4) between sometime between 14:00 and 17:30 that we came home. She is a 2 year old mix breed dog of 15kg weight. We called the Vet immediately and drove there. About 18:30 he gave her a shot for vomit. There was nothing to notice there. Her heart rate was crazy 170 but he said there is no adidote and gave her a pill of Tenormin atenolol 25mg (human medicine) to bring her heart rate to slow down. And told me to feed her only with rice and maybe some chicken breast. This morning i went back to the vet to check her and her heart rate was 100 and he gave her another one. Should i take her (Baloo) somewhere else to make blood test? The Vet told me to check her pulse every two hours and to give her before sleep another pill. And take her back tomorrow morning for a check of pulse. Should i go somewhere else where they do blood test? She is energetic has appetite it is now almost 24h.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Baloo certainly consumed a high number of Tirosint (T4) pills which is high enough for us to see signs of an adverse reaction which may include muscle trembling, increase in heart rate, behavioural changes among other symptoms. If you are concerned about Baloo’s care, you should consult the Pet Poison Helpline as they will be able to give you specialised advice on what to expect with that particular brand of thyroid medication etc… Regards Dr Callum Turner DVM www.petpoisonhelpline.com/poison/thyroid-medications/

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molly
Labrador Retriever
15 Years
Critical condition
0 found helpful
Critical condition

my dog had black patches on her skin and was loosing small patches of hair about 9 months ago. i took her to my vet and he gave her a thyroid med #7 that i had to give her once a day for her lifetime.he did not do a blood test first but i trusted him. at first giving the medication to her she did have trembling and she kind of hacked like something was going on in her throat. i figured it was just the medication working.after 3 month refills 3 times or 9 months my dog stopped eating.i took her back to the vet he gave her fluids and then gave her a blood test and told me her liver was bad. he said instead of a normal reading for her liver of around 200 her reading from the blood test was 4000. she lost a lot of weight and was dying. after another round of fluids and 2 b12 shots and an antibiotic there was no change she just stopped eating and drinking water.i had to put her to sleep and i am living with the possibility that i gave my beloved dog a medication that she really did not need since there was no blood test done in the beginning. i am thinking her thyroid was always fine and she did not need the medication. all i know about the thyroid medication is the pill is long with a 40 stamped on one side and a t4 on the other.can you tell me in your opinion did she really need this medication.i am thinking with the high 4000 number pertaining to her liver function that i gave her a medication she did not need. please can you answer this thanks.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
A tablet with T4 stamped on it would be levothyroxine which is given to patients with hypothyroidism where the thyroid doesn’t produce sufficient thyroid hormones for the body. Whilst a presumptive diagnosis can be made from symptoms, it is important to have a T3/T4 test done to determine the severity of hypothyroidism. Sometimes liver disease is misdiagnosed as thyroid issues due to the process where T4 to converted into T3; since I didn’t examine Molly, I cannot really weigh in on this delicate issue. Regards Dr Callum Turner DVM

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George
terrier
3 Years
Mild condition
0 found helpful
Mild condition

Has Symptoms

none

My 12 pound pup got into my Synthroid 50 prescription and ate a 20 day supply. He seems fine and is not showing any symptoms. His poo was regular. I called my vet and they are very busy today and won't have time to see him. What do I do??

Dr. Michele King, DVM
Dr. Michele King, DVM
1059 Recommendations
Maura, thank you for contacting us about George. Ideally, if he has eaten them within the last hour, I would take him to an emergency clinic if your clinic is busy or closed, and have them induce vomiting. That would be the best course of action for him, as that is a very high dose of thyroid medication for him! If it has been longer than that time, the signs of an overdose of synthroid in dogs are muscle tremors, nervousness, panting, a rapid heart rate and aggression. He may need treatment for those signs at either your vet or the emergency clinic. There is also a PetPoison Hotline that you can contact for further assistance: http://www.petpoisonhelpline.com. Their phone number is 855-764-7661. I hope that you are able to get him into an emergency clinic and have them evacuate his stomach contents, but if it has been too long or you are unable to do so, your veterinarian may be able to give you some advice as to how to handle his signs as well.

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kalvin
Golden Retreiver
14 Years
Moderate condition
0 found helpful
Moderate condition

Has Symptoms

Nausea

Medication Used

Thyroxine, Carprofen

I have 60 pound 14 year old Golden that has be on Carprofen for joint pain and it has been working great. Recently found to need thyroid replacement along with some elevated kidney function and was started on 100mg twice a day starting on a Sunday. Within 24 hours started having loose stools and on Tuesday had a couple emesis with dog food and soil noted in it (very unusual for him to get into the dirt) along with the loose stools he randomly started going into pool and swimming, which he hasn't done in years.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Any negative changes presenting after the start of any new medication should be review immediately with your Veterinarian to determine whether any changes to the regimen need to be made or to continue with the current course of treatment. I cannot really advise you on this as Kalvin isn’t under my care. Regards Dr Callum Turner DVM

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Arlo
Schnoodle
2 Years
Moderate condition
0 found helpful
Moderate condition

My dog accidentally was given the other dogs thyroid medicine. She doesn’t have a thyroid problem. We have a black lab who takes half a pill but I don’t know the dosage. What do we do?

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Whilst it is concerning that Arlo took a dose of your other dog’s thyroid medicine, a one time dose is unlikely to cause many if any side effects; if ingestion is within two hours you could try inducing vomiting otherwise monitor Arlo for any changes. If you notice any symptoms on this page, visit your Veterinarian. Regards Dr Callum Turner DVM

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Jake
German Shepherd
9 Years
Moderate condition
0 found helpful
Moderate condition

Having hypothyroid in a dog will it cause trouble walking weakness, legs giving out? My dog was diagnosed hypothyroid and watching him is so sad he's been out on medicine but it's only been 4 days

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Hypothyroidism is related to weakness and hind limb paralysis in dogs among other neurological symptoms. Thyroxine administration should be commenced to manage this condition, also a visit to your Veterinarian may be indicated as well for a check up. Regards Dr Callum Turner DVM

Dr. Callum Turner I have a question that kind of ties into Jakes question. I have taken in a senior rescue 8 months ago who had a chronic skin infection that would improve with amoxicillin, but once the 28 days of treatment where up within a few days it would come back. She came with significant muscle weakness in her hind legs (muscle wasting noted,) but it was initially thought to be due to her possibly being restrained on a short leash for a long time. Rosie was missing a good patch of hair along her under neck area that was about the width and length of a collar being too tight and her vocal noises where very odd until 2 months into not having any thing around her neck (harness no collar). My Vet eventually did a TSH level that came back at 7.4 (Canadian result) I do not know the normal range for TSH levels so not too sure how far from normal her result was. The infection of skin and hair loss has significantly improved over the 2 months she has been taking the thyroid medication, but I was wondering with time is it likely she may get some muscle tone/strength back in her hind legs with the continuing of her thyroid medications & exercise... She has always shown a love for her walks & has tried to chase my younger rescue in play since she entered our home :) .

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Charlie
Sheltie
8 Years
Serious condition
0 found helpful
Serious condition

Has Symptoms

Vomiting, loss of appetite,, diahrrea, lethargic
Vomiting, loss of appetite,, diahrrea
Vomiting, loss of appetie
Vomiting
Vomiting, loss of appetite, diahrrea, weight loss

Medication Used

Levothyroxin

Our dog had no pre-existing liver or biliary system problems. He was on thyroxine for a few months and when we picked up his refills the vet prescription was twice the dosage he had been taking. Within a week to ten days, the dog stopped eating, lost a large amt of weight and was vomiting. We took him to another vet for a 2nd opinion who diagnosed thyrotoxiosis. He underwent emergency surgery as his liver, bile duct, gallbladder, pancreas had all been damaged. He has been given a clean bill of health and has had normal function of all organs for 2 years now and no issues. The 2nd opinion vet discovered that the original vet had erroneously written an overdose for our pet's thyroid refills. Good news is our dog has been having a clean bill of health showing no pre-existing or post conditions. The only factor related to his sudden illness was the thyroid poisoning for 2 weeks. Can you advise what the relation is with prolonged thyroid overdose in dogs and damage to the biliary system.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations
Thyroxine or usually the lack of thyroxine has a well known effect on the biliary system; but an increase in thyroxine levels can have an effect on the increase of ile secretion, as far as specific issues caused hasn’t been investigated as much as a lack of thyroxine (hypothyroidism) but a relationship exists nonetheless. The article below talks about the lack of thyroxine and the formation of bile stones, but also touches on incidents of an increase in thyroxine levels. Regards Dr Callum Turner DVM www.hindawi.com/journals/hpb/2012/102825/

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Projo
Corgi mix
10 Years
Serious condition
0 found helpful
Serious condition

Has Symptoms

Diarrhea
Vomiting
Loss of appetite

Medication Used

Thyroid tabs 8mg,
Synovi g4 2 a day
Rimadyl 75mg

My jack tussle recently started a low dose of thyroid meds and a a mild pain killer to take daily she did great first month, now not eating but still drinking water and moving around it's been 5 days she ate some food this morning but this afternoon she threw it up. Should I stop the thyroid meds now and get her to a vet or should I continue to monitor as my vet suggested? Also her skin is shedding not rashes out new hair growth and skin like a snake shedding the dead layer.

Dr. Callum Turner, DVM
Dr. Callum Turner, DVM
2479 Recommendations

If Projo hasn’t been eating for the past five days (apart from the morning) it would be best to visit your Veterinarian for an examination to be on the safe side; your Veterinarian will check Projo over and will may give her something to settle her stomach since eating after a long period of fasting will cause vomiting. You Veterinarian may also review the medication Projo is receiving. Regards Dr Callum Turner DVM

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