The only NSAID available IV is Toradol. I don't even know what that would do to your body. Maybe someone in the pharmacology arena would know, I never heard of anyone trying. I doubt it would even dissolve. And the whole filler thing, causing vegetations in your heart,endocarditis or cardiomyopathy are possibilities
Have you been to a pain clinic, or returned to the doctor?
Have you explored other options? How many are you taking? I take 3 when I need them, in the am, then 2 in the pm. I alternate between them and Motrin. Naprosyn one day and Motrin another.