Welcome! My name isXXXXX am a UC Davis graduate, and currently, a Medical Director of a veterinary hospital.
I am sorry to hear about this concern for Duke.
Absolutely, there could still be a foreign fragment lodged between the teeth or roof of the mouth.
There may have been some type of soft tissue injury to the mouth that is also bothering him. A 9 month old dog should not be having eating issues. So, he is clearly either uncomfortable or he is nauseated.
To help settle the stomach
you can use of the following, but not as a replacement for veterinary examination include
1.Pepcid A.C. (famotidine
) comes in 10mg, 20mg, or 40mg tablets.
You can give it every 12 hours. You can give 0.5mg per pound of body weight. So, a 20 pound dog would get 10mg.
2.Prilosec (omeprazole). It comes in 10mg or 20mg tablets.
You can give in every 24 hours. You give 0.5mg per pound of body weight. So, a 20 pound dog would get 10mg
3.Zantac (Ranitidne). It comes in 75mg, 150mg, or 300mg sizes.
You can give it every 8 to 12 hours. You give 0.25 to 1mg per pound of body weight. So, a 20 pound dog would get roughly 1/3 tablet of the 75mg. Even with bigger pets, it is easiest to get the smallest size tablet. Even a 75 pound dog would only need one 75mg tablet.
4.Pepto-Bismol or Kaopectate
You can give it every 8 hours. The average dose is 1ml per pound of body weight, and that is the TOTAL dose for the day, which should be divided into two or three doses. So, if a pet weighs 30 pounds, they would get a total of 30ml a day divided. This is dosing for regular strength Pepto-Bismol. If you use maximum strength liquid, give half as much.
But, definitely, he needs to get into a vet. especially, if a antacid does not help him or resolve the situation, I would schedule an examination by tomorrow.
I see you tried some pepto, so its okay to try some prilosc or pepcid instead. Very sorry to hear Duke is not feeling well. Please let me know if there is anything I did not cover for you. I hope that information has been helpful.
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