Hello, thanks for your question today! I am Dr. Drew, and I am a licensed veterinarian. I'll be happy to help you in any way I can.
How many doses of Metacam has Mikey received?
Metacam is generally not recommended for ongoing use in cats,
as there is a risk of kidney troubles if it's used continuously.
that's even more concerning to me, since that condition is stressful on the kidneys,
and metacam can contribute to kidney failure in cats,
so I'm quite concerned about the situation you are describing.
drinking excessively can be a sign of kidney troubles.
well, I don't know what they tested or looked at specifically,
but I'd be extremely cautious about continuing the metacam in this situation.
I would typically suggest stopping it and see if things improve or worsen,
as that may help your vet determine the next step.
that is not an expected sign to see after urethral blockage.
again, I'm a bit concerned about Mikey's situation, and suggest blood tests if the situation does not improve.
it is a non-steroidal anti inflammatory drug.
it reduces pain and inflammation,
but cats can be quite sensitive to some of the side-effects.
usually the inflammation is gone after 5 days from catheter removal
it takes several days to be eliminated from a cat's system. That's part of the reason it can be risky to use daily in cats.
Metacam does not directly cause lethargy. The side effects of Metacam (digestive irritation, kidney damage), can cause lethargy.
if his appetite does not improve, or his water intake seems to remain high -- those are warning signs.
You said he was drinking a lot of water.
being lethargic is not normal, and is not a side effect of metacam, as I mentioned above.
if the lethargy persists for more than 48 hours after stopping Metacam, all I can suggest is a re-examination.