http://www.ehow.com/facts_5718256_side-effects-reglan-cats.html
Hi Melissa,
When my Gracie was very sick, back in the beginning of 2009, I gave Reglan to her for the vomiting and nausea. Well, she had a horrible reaction, and was running around like a nut. I called the one vet that used to come to my house, and she said that she refuses to give Reglan to cats any longer. It can cause severe side effects, as Gracie had, and I had to give some Benadryl to her (broke open a capsule and metered out the correct dose for Gracie) to get her to calm down.
I will never use Reglan again. It never really helped my cats with nausea or vomiting.
Can you call your vet, and ask what they recommend? Is there any chance that you can use a small amount of Pepcid A/C crushed up and put into a clear capsule, or maybe a bit of water?
Also, several sites I read, said that it is contra-indicated in use with cats with diabetes or on insulin:
Cats with a history of seizures, pheochromocytoma, heart failure, high blood pressure, diabetes, porphyria, liver and kidney problems, and low levels of enzymes shouldn’t take Reglan. This drug should also not be used to help pass gastrointestinal obstructions.
Read more: Treating Gastritis in Cats with Metoclopramide (Reglan) - VetInfo
This below is from a post in 2011 here on FDMB:
Just saw your post here and saw that you mentioned giving Reglan to your furbaby. I hope she is tolerating it well. I usually am more cautious on giving Reglan since my cat, Gracie, had a violent reaction to it, back in January of 2009. My vet will no longer prescribe it for cats. Gracie went bonkers and I had to call the vet right away, and she told me how much Benadryl to give her to counteract the horrible reaction she had, of getting very nervous and running all over like a chicken with her head chopped off.
Hope your little girl is doing better now.
Jean and Charcoal (GA)
http://www.harpsie.com/pancreatitis.htm
Anti Nausea Medications
You may be offered Reglan, which is available by prescription only. This medication works by regulating stomach contractions, and therefore is helpful for nausea caused by a lack of motility in the stomach; but since Reglan can cross the blood/brain barrier, it also acts on the brain to control feelings of nausea, which can be helpful to cats with pancreatitis.
Reglan comes in 10 and 5mg tablets or a liquid, and must be given 20-30 minutes before eating. It may have various side effects, including constipation, hyperactivity and agitation or drowsiness; very occasionally, twitching may be seen. Reglan also lowers the seizure threshold, so should not be given to cats prone to seizures.
If you are giving Reglan at the same time as Pepcid AC, you should separate the dosing by at least two hours, since Reglan may bind with the Pepcid AC and thereby reduce its effectiveness.
Veterinary Partner has more information on Reglan.
Pet Place also has some information.