Is it safe to crush pills and dissolve them in water?

I just recently thought about this when I had my migraine vertigo attacks. I have trouble swallowing big pills so I just crushed up some Exedcrin and dissolved it in water. Then I wondered if it was safe to do so. I haven’t had any ill effects from doing it and I’m still alive.
Are there any liquid medicine options out there? I would assume you’d have to get a prescription for this. I don’t see too many options in the drugstore for liquid.
There are all pill form.