Did my vet sell me benadryl?

I just took my cat to the vet and they took x-rays and gave her an antibiotic shot. The vet showed me the x-rays on her phone which was weird but I didn't think anything of it. They also told me to give her liquid form of prednisolone (a steroid for her bronchitis). It's pink and I swear it smells like cherry. Did they sell me benadryl? How do I verify if it is real or not? Who do I report this to if this is the case? I know prednisolone comes in tablets because my other cat had to be on them too. What do I do?