Hi Allie,
I'm sorry to hear the Newkitty is having another pancreatitis attack. I've been through those with my Harley and they are no fun.
Yes, Ondansetron and Cerenia can be taken together as they do two different things. Cerenia is a great drug and is chiefly effective against vomiting and it also has some anti-inflamatory properties in the GI tract. Ondansetron works to combat nausea. Cerenia can only be given for a maximum of 4 or 5 days (as it builds up in the body) and then needs to be stopped for 2-3 days before being re-started, ondansetron has no such limitation. I've found it to be very effective for Harley and my Princess kitty who has cancer and Exocrine Pancreatic Insufficiency. She yarks almost 4 times a week and now that she's on daily ondansetron, she yarks maybe only once a week. Pepcid and Zantac did nothing for her.
The starting dose for ondansetron is 1mg every 8 to 12 hours depending on how severe the symptoms are. You can ask your vet for a script for the 4mg pills (make sure they write it for the pills and not the dissolvable sub-lingual tablets which have sugar in them) and fill at your local pharmacy but be sure to call around for the best prices. In my area, Costco had the best brick and mortar pharmacy price. WalMart, CVS, and Target might also have good prices as well. You can also buy ondansetron online from ThrivingPets.com.
Two things to also buy when you are picking up your pills are a pill cutter as you'll have to quarter the tablets to get a 1mg dose and empty gelatin capsules. Ondansetron is very bitter and might make Newkitty froth and foam at the mouth if she tastes it going down. Not fun for a kitty who's already feeling sick!
Sending Newkitty healing vines - and hugs to you!
