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Kelly Hill
Kelly Hill, Dog Veterinarian
Category: Dog Veterinary
Satisfied Customers: 587
Experience:  full time veterinarian at Tender Touch Veterinary Hospital
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My 8 lb dog ate 1/2 of promethazine but it had a experation

Customer Question

My 8 lb dog ate 1/2 of promethazine but it had a experation date of 2009
JA: I'm sorry to hear that. The Veterinarian will know if the dog will be able to digest that. What is the dog's name?
Customer: stella. A bichon
JA: Is there anything else the Veterinarian should be aware of about stella?
Customer: she 5 months
Submitted: 7 months ago.
Category: Dog Veterinary
Expert:  Kelly Hill replied 7 months ago.

Hi this is Dr. Hill. How long ago did she eat it?

Expert:  Kelly Hill replied 7 months ago.

What mg strength is the promethazine?

Expert:  Kelly Hill replied 7 months ago.

It is important to know the strength of the tablet so that I can calculate toxicity. I am sorry, but I am not able to take a phone call right now.

Customer: replied 7 months ago.
25 mg about one hr
I just need to know if this is poisoning to her
Google said no?
Said she would just be sleepy
Customer: replied 7 months ago.
It expired 2009 so hopefully not very strong?
Expert:  Kelly Hill replied 7 months ago.

give me a second to calculate. If she got the pill within the last 20 minutes, then I would make her vomit by giving her a teaspoon of hydrogen peroxide by mouth.

Expert:  Kelly Hill replied 7 months ago.

So she got about a 7 mg/kg dose. The animal poison control center has reported toxic ingestions starting at about 20 mg/kg. So she got a much smaller dose. However, it is not wrong to try to induce vomiting with hydrogen peroxide if you have some. The effects of the promethazine are typically sedation, but it can cause a low blood pressure.

Customer: replied 7 months ago.
Even 1 Hr later ?
Expert:  Kelly Hill replied 7 months ago.

The stomach does not empty for up to two hours. I am not sure how quickly the tablet would dissolve, so difficult to say if it would still be of benefit.

Customer: replied 7 months ago.
Thank you
Expert:  Kelly Hill replied 7 months ago.

Is Stella acting normal?

Customer: replied 7 months ago.
just sleepy but tail wagging
Expert:  Kelly Hill replied 7 months ago.

So possibly seeing the effects of the medication. She got well below the dose range that showed signs of toxicity in the report I read, so hopefully she will be fine. Do you have an emergency clinic near by?

Customer: replied 7 months ago.
No - 20 minutrs
Expert:  Kelly Hill replied 7 months ago.

So, that is not too far away if you feel that she is acting weak, unsteady on her feet. Having her monitored overnight may give you peace of mind. Feel free to ask additional questions. If you are satisfied with my response then please take time to rate my answer.

Customer: replied 7 months ago.
One more thing just found out
A supp not tablet in foil
Expert:  Kelly Hill replied 7 months ago.

the promethazine was a suppository? Was it still 25 mg?

Customer: replied 7 months ago.
but didn't get all and it had date of 2009
Expert:  Kelly Hill replied 7 months ago.

Okay, so if Stella did not get all of it, then she likely will not have severe effects. She may however have some diarrhea.

Expert:  Kelly Hill replied 7 months ago.

Does the package list the ingredients in the suppository?

Customer: replied 7 months ago.
No just said 25 mg
Supp promethazine HCI
Expert:  Kelly Hill replied 7 months ago.

then if no other active ingredients, then likely only have concerns for mild gastrointestinal upset. Puppies will eat the craziest things!!!

Customer: replied 7 months ago.
That's for sure I guess this fell out of a suitcase???!
Thank you
Expert:  Kelly Hill replied 7 months ago.

You are very welcome. Take care.