We have a 21 year old horse, He is under weight due to needing his teeth floated ( we just discovered ). He was fine at

We no longer believe that it is simply colic. He does moan and has shallow breathes, he is cold. We were trying to get him into the barn but cannot get him to walk. We feel like it is a cold or upper respiratory but he does tend to turn back to his abdomen like it hurts. So there is the symptoms are confusing. Can you comment on using Penicillin and increasing the first 2 doses. We are use to giving our animals injections just wondering your opinion on the anount

Vet is still not calling back. I agree with you . The Largest syringe I have right now is 20ml. What are our options if your right ? Anything we can do ?

ok, we have now given him 22ml of penicillin. We're basing it on about 800lbs. Can give another injection if you think it would benefit.

oops. He seems to be warmer, we have blankets on him, and he is coherent. He isn't shaking as much and the mucus has slowed down. Any suggestions on keeping him hydrated ? He took the shot like a trooper. He tried to even stand up at one point. As soon as he does, we will take him to the barn. Thank you for your help. We just wait and pray at this point.