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Dr. B.
Dr. B., Veterinarian
Category: Dog
Satisfied Customers: 21419
Experience:  Hello, I am a small animal veterinarian and am happy to discuss any concerns & questions you have on any species.
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My 27 lb Shellie just ate 25 mg diphenhydramine Hcl. Help!

Customer Question

Good morning
My 27 lb Shellie just ate 25 mg diphenhydramine Hcl.
Submitted: 2 years ago.
Category: Dog
Expert:  Dr. B. replied 2 years ago.

Hello & welcome, I am Dr. B, a licensed veterinarian and I would like to help you with your wee one today.

Actually, Diphenhydramine is a drug that we commonly use in dogs, so this is not toxic. And the dose you have listed is 0.9mg/lb for Charlie's size; which is a normal dose for a dog. So, this is not toxic and we'd not expect any harm from this. It is possible that he may have a bit of drowsiness or GI upset but nothing more then that. Therefore, we could intervene and induce vomiting (which I am happy to discuss) but it is not necessary and we'd expect no issue here.

I hope this information is helpful.

If you need any additional information, do not hesitate to ask!

All the best,

Dr. B.


If you have any other questions, please ask me – I’ll be happy to respond. Please remember to rate my service once you have all the information you need as this is how I am credited for assisting you today.Thank you! : )

Customer: replied 2 years ago.
Thank you. He is an anxious dog, and no change in his personality as of yet. I am so glad it is not toxic.
Will monitor.
Expert:  Dr. B. replied 2 years ago.

You are very welcome, Wanda.

As I noted, we may not see any signs at all (since they can safely have even double that dose), but we'd just want to keep a general eye on him today. :)

All the best to you both,

Dr. B.