Dog Veterinary

Ask a Dog Vet and Get Answers to Your Dog Health Questions

Ask a Dog Veterinarian,
Get an Answer ASAP!

Dog Veterinary

My dog ate 2 200 mg naproxen he ways 100 to 110 lbs. he

Customer Question
my dog ate 2 200...
my dog ate 2 200 mg naproxen he ways 100 to 110 lbs. he throws up a couple hours after he eats. been goin on for 2 days what do i need to do. he did go out yesterday and use the bath room started runny then turned solid
Submitted: 1 year ago.Category: Dog Veterinary
Show More
Show Less
Ask Your Own Dog Veterinary Question
Answered in 19 minutes by:
3/7/2016
Dog Veterinarian: Dr. Kara, Veterinarian replied 1 year ago
Dr. Kara
Dr. Kara, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 17,105
Experience: Over 20 years of experience as a veterinarian.
Verified

Hello, my name is***** and I have over 20 years of experience as a veterinarian. I am sorry to hear that PJ ingested two 200mg (400mgs in total) Naproxen tablets.

Naporoxen is a nonsteroidal anti-inflammatory that we do not use in dogs due to the high incidence of side effects including gastrointestinal bleeding, ulcers (sometimes perforating) and kidney damage even when given appropriate doses.

The dose listed in Plumb's Veterinary Drug handbook in 2mg per kilogram (2.2 pounds) of body weight every 48 hours.

In a dog his size (100 pounds/ 2.2 pounds per kilogram = 45.45kg) a usual dose would be 91mg, (45.45kg X 2mgs per kilogram = 91mgs), so he ingested roughly 4.4 times a normal dose if he ingested 400mgs.

A likely lethal single (meaning given all at once) toxic dose of Naoproxen in dogs is 35mg/kg, or 1,590mg or 8 tablets of the 200mg size for a 100 pound dog.

Peak blood levels are within 3 hours of ingestion so these levels should have occurred the first night and would have explained his repeated vomiting and loose stools.

Toxic side effects are abdominal pain, vomiting, gastrointestinal ulcers which can perforate, dark tarry stools, weakness, anemia, and kidney damage shown by increased kidney waste product levels (BUN and creatinine) on blood testing.

Unfortunately the half life (the amount of drug metabolized and decreased by half) in dogs is very long, 72 hours, and as such the effects of the drug linger. It is likely he still has high levels of the drug in his system, even now.

While he definitely ate a toxic level, it may not be lethal IF he had normal organ function to start, and he gets good supportive care.

He should see his veterinarian for an exam and treatment based upon how much damage has been done. Your veterinarian will examine him, look for blood in his stools and urine, test his kidney waste blood levels and urine for signs of kidney damage and get him started on sucralfate which is an ulcer coating drug, as well as an acid reducer such as famotidine or omeprazole. They probably will want to put him on intravenous fluid therapy to flush out any remaining drug and support his kidney function. If he is continuing to vomit they can give him injectable anti-nausea drugs. Vomiting is dangerous because it leads to dehydration, which will only further stress his kidneys, and contribute to esophageal ulcers developing.

They will also likely recommend feeding a very bland diet.

At home now you can start either:

1) Pepcid-ac (famotidine) at a dose of one 10mg tablet per 20 to 40 pounds of body weight every 12 hours. (Three of the 10mg tablets for a dog his size).

OR

2) Prilosec (omeprazole) at a dose of one 20mg tablet per 40 to 80 pounds of body weight every 24 hours. (Two of the 20mg tablets for a dog his size).

You should also start feeding a bland diet mix of 1/3 boiled, lean hamburger (or boiled, white, skinless chicken) and 2/3 boiled white rice. Give small meals several times a day. Feed the bland diet for several days, then if his vomiting stops you can slwoly start mixing in his regular diet and slowly convert him back.

But ideally this is something he should see his veterinarian for treatment for to avoid a possible perforating ulcer and/or kidney failure.

Best of luck with PJ, let me know if you have any further questions.

Ask Your Own Dog Veterinary Question
Dog Veterinarian: Dr. Kara, Veterinarian replied 1 year ago

Hello, I wanted to check in and see if you had any further questions after reading my response. If you do please feel free to respond with them. If not and you found my information helpful please remember to rate my response positively so I may receive credit for my work thank you, ***** *****

Ask Your Own Dog Veterinary Question
Ask Dr. Kara Your Own Question
Dr. Kara
Dr. Kara
Dr. Kara, Veterinarian
Category: Dog Veterinary
Satisfied Customers: 17,105
17,105 Satisfied Customers
Experience: Over 20 years of experience as a veterinarian.

Dr. Kara is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

It was so professional, so personally concerned (as we were) and you answered all of our questions. George and I are so happy that I found "JustAnswer" on my Google search -- you are now in my "Favorites" list! And, yes we do love our kitty - she makes our life complete!

Bev & GeorgeBoca Raton, FL

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Dr. Debbie

Dr. Debbie

Dog Veterinarian

902 satisfied customers

Companion animal veterinarian practicing for over 10 years.

Dr. Andy

Dr. Andy

Medical Director

16,087 satisfied customers

UC Davis graduate, emphasis in dermatology, internal medicine, pain management

Dr. Gary

Dr. Gary

Dog Veterinarian

9,949 satisfied customers

DVM, Emergency Veterinarian, BS (Physiology)

Dr Scott Nimmo

Dr Scott Nimmo

Dog Veterinarian

9,704 satisfied customers

BVMS, MRCVS. { Glasgow UK }

Dr. Scott

Dr. Scott

Veterinarian

9,615 satisfied customers

15 years of small animal, equine and pocket pet medicine and surgery.

Dr. Bruce

Dr. Bruce

Veterinarian

8,945 satisfied customers

15 years of experience as a small animal veterinarian

Rebecca

Rebecca

Dog Veterinarian

7,442 satisfied customers

More than 30 years of companion animal practice.

< Previous | Next >

Related Dog Veterinary Questions
My dog ate 2 mucinex sinus day tablets are they toxic. The 2
My dog ate 2 mucinex sinus day tablets are they toxic … read more
Dr. Peter
Dr. Peter
Doctors Degree
14,315 satisfied customers
He won't eat and no energy. Told he had liver toxicity a
He won't eat and no energy. Told he had liver toxicity a week ago only … read more
DocPaul
DocPaul
Doctoral Degree
663 satisfied customers
Has the vet community come to a consensus on the toxicity of
Hey doc, Has the vet community come to a consensus on the toxicity of grapes or raisins? I have a strict no raisin or grape rule in the house bc i dont want to risk the dogs getting them. Well my wife… read more
Dr. Michael Salkin
Dr. Michael Salkin
Veterinarian
DVM
3 satisfied customers
My dog has been exposed to toxic mold and I am having
Hello, My dog has been exposed to toxic mold and I am having problems with treating his skin and fur issues. He has been to the veterinarian, since being exposed over a year ago, well actually we both… read more
DocPaul
DocPaul
Doctoral Degree
663 satisfied customers
She will not eat anything -did not eat chicken this morning.
She will not eat anything -did not eat chicken this morning. just tried to give her cheese or broth. No go. Not even water. Belly is not bloated. Ears are cool. Nose is cool and wet. I suspect kitty l… read more
Pet Doc
Pet Doc
Senior Small Animal Veterinarian
BVSc
2,782 satisfied customers
Are fire extinguishers toxic to dogs? He didn't eat
he didn't eat anything. we had to use a fire extinguisher yesterday in our home and our dog is very lethargic and not himself … read more
DocPaul
DocPaul
Doctoral Degree
663 satisfied customers
My dog ate a piece of lemon poppy cake. Is it toxic. A lemon
My dog ate a piece of lemon poppy cake. Is it toxic … read more
Dr. Bruce
Dr. Bruce
Veterinarian
Doctor of Veterinary Medicine
8,945 satisfied customers
My dog ate a Costco chicken carcass.....the entire
My dog ate a Costco chicken carcass.....the entire thing....it has been 1.5 days..he seems fine, is still eating and has pooped. Will he pass all the bones? We have not seen them yet. … read more
Dr Scott Nimmo
Dr Scott Nimmo
Dog Veterinarian
9,704 satisfied customers
I need to know if organic skinless and boneless chicken
I need to know if organic skinless and boneless chicken breast is good for my 8 pound poodle? … read more
Dr. Meghan Denney
Dr. Meghan Denney
Doctor of Veterinary Medicine
Doctorate of Veterinary Medicine
1,460 satisfied customers
My dog had diarrhea and after feeding him chicken and rice
my dog had diarrhea and after feeding him chicken and rice for a week, he will not go back to his regular feeding schedule and it's been three weeks. He eats sometimes but not always. … read more
Scott Perry
Scott Perry
Veterinarian
Doctor of Veterinary Medicine
1,226 satisfied customers
Dog shivering vomiting please help. A piece of chicken
Dog shivering vomiting white please help JA: I'm sorry to hear that. Hopefully it didn't make a mess. Did the dog eat anything unusual? Customer: A piece of chicken yesterday but she was fine JA: What… read more
Dr. Peter
Dr. Peter
Doctors Degree
14,315 satisfied customers
Bleeding from rectum. No appetite, hot spot on buttocks
bleeding from rectum JA: I'm sorry to hear that. The Expert will know what to do about this bleeding. I'll connect you ASAP. Is there anything else important you think the Veterinarian should know abo… read more
Dr. Altman
Dr. Altman
Veterinarian
Doctoral Degree
9 satisfied customers
My dog is bleeding out of the, and keeps thoughing up? And
my dog is bleeding out of the ass, and keeps thoughing up? And he seems unable to have a crap… read more
CriticalCareVet
CriticalCareVet
Veterinary Specialist
Doctoral Degree
57,087 satisfied customers
Is gold bond powder toxic for dogs if ingested? She had very
She had very bad itching on her back so I put some on her and now she is lethargic and she vomited so I want to know if she could get worse and possibly die … read more
Denise Cudiamat
Denise Cudiamat
Veterinarian
Doctor of Veterinary Medicine
341 satisfied customers
I have been feed feeding duke chicken and rice for 1.5 days
I have been feed feeding duke chicken and rice for 1.5 days he passed the meat pad, but tonight I have been up every 2 hrs b.c he is having diharrea does the chicken and rice cause diharrea that bad ?… read more
Dr. Christina
Dr. Christina
Small Animal Veterinary Internist
277 satisfied customers
What is the toxic dose of ibuprofen in dogs? I'm in Cameroon
What is the toxic dose of ibuprofen in dogs? I'm in Cameroon as a missionary doc and needed to neuter my dog, so I had my surgeon friend help me. We used ketamine IM for induction and did the castrati… read more
Dr. Michael Salkin
Dr. Michael Salkin
Veterinarian
DVM
3 satisfied customers
My german shepard just started with famotidine. Is tramadol
Hi my german shepard just started with famotidine. Is tramadol safe to use at the same time?… read more
Dr. Bruce
Dr. Bruce
Veterinarian
Doctor of Veterinary Medicine
8,945 satisfied customers
In was wondering if peppermint is toxic to dogs? Tums, but
In was wondering if peppermint is toxic to dogs? JA: I'm sorry to hear that. Did you see what the dog ate? Customer: Tums, but ir has peppermint in it. JA: Is there anything else important you think t… read more
Dr. Peter
Dr. Peter
Doctors Degree
14,315 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x