Here in Romania you find Nurofen which is another name for Ibuprofen/Motrin. I am not familiar with the second compound Tommy.
My conundrum is wether he should pin anymore of that deca or not.
That 2nd product is available by prescription
only here in the US, but I know it is over the counter in Mexico, so your options may be limited.
I agree, using anymore of the exact same gear is an issue. Here's what I would do if I was using the product myself.
1- If it's a 10cc vial and cost less than $100 I would just "bite the bullet" and throw it away.
2- If you have a larger multi-use vial and it cost $200 or more, then I would be real careful extracting 1cc, do all the right things to ensure a clean injection and try another shot, possibly in the delt or other hip. If it reacts badly again then you
know it's just unsterile gear. If there is no negative result, you can just conclude that the first shot was somehow dirty- it happens to everyone at sometime.
3- Obviously, only try #2 after the infection has cleared and you have the proper meds to help if the result of the 2nd shot is negative.
That's honestly how I would handle the situation, and it's what many cats I know have done over the years.