Side effects of pain relief injection in dogs?

[CarinaMarina]

We've had some dramas with my 12 month old terrier today - he is showing signs of developing IBD (vomited blood clots last week) and he's had such bad vomiting and diarrhoea today that he became very weak and lethargic this evening. When he started posturing in pain I took to him to our vet hospital.

Vet said he certainly had abdominal pain and nausea, and was a bit dehydrated. But he said he'd give him an anti-emetic and some pain relief to make him more comfortable, and was happy for us to take him home and monitor him.

He's now extremely weak and unable to stand, he's trembling and seems to be reflexively tensing his hind legs up into his belly, and he's cried a few times. He's sort of sleeping but keeps waking up and looking around, fighting the drowsiness I think. He was fine with the anti-emetic before so this must be the painkiller - does anyone know what he might have been given for moderate gastric pain from food intolerance, and how long the side effects last?

I'd say he needs to be seen again.

At least speak to your vet for advice.

Please take him to the vet again. He is still in pain. This isnot a reaction to the pain killer , he needs urgent investigations. Could be any number of things but my worry is a blockage or pancreatitis. Don't wait

He really needs seeing, I agree with pps. He could have swallowed something. This could be an absolute emergency, get him in quickly.

His respiratory rate is normal - he's acting more like a dog recovering from sedation really, he doesn't appear distressed. I spoke to the vet again who asked me to make a few checks, and his belly is soft, he isn't guarding, his gums are pink and not dry or sticky. He's not breathing hard.

The only weird thing is this tensing of his hind legs. Vet said he'd had some sort of opiod and although sedation can be an effect, it's rare.

Made it through to morning, he's settled and not anxious but is weak and lethargic. Not accepting food or water, alert to sounds and has his eyes open but reluctant to move. Very noisy stomach sounds. Carried him out to the garden and gently put him on his favourite spot to see if he'd have a wee, but he just wobbled back indoors, looking awful.

Called the emergency vet again who assures me it's the ongoing reaction to the "morphiate" (is that a word??!) and to expect him to be very flat and sleepy for another few hours. They're not worried about dehydration at this stage, but have asked for an update around 12pm to see if he's improving - if by 2pm he isn't moving around a bit more or showing some interest in food, they want to see him.

His coat is looking rough and staring and he looks so thin - he was quite slender anyway and couldn't afford the half kilo he lost with his last episode, now he's lost a bit more. I can see his spine and pelvic bones from here, and now all he'll eat for the rest of his life is prescription food. He's only a year old.

I would take him in again. What breed of terrier is he OP ?

He's a border terrier SirVix - I know of several with IBD, so I suppose it's not a stretch.

There is a slight improvement now and he's much more alert - he's barked at a sound, jumped down from the sofa and run a few steps to the door. And wagged his tail a little.

Still won't look at food or water and hasn't drunk or peed for 18 hours. Hasn't eaten for 24 hours. Will update vet at 12pm.