Filler under eye
There should not be any issue with having a filler the day after dental work and being on antibiotics should not affect the filler. I'm not sure if you are on the antibiotics for an infection or just taking it prophylactically. If you have an actual infection, I would wait until this is cleared up before having the filler. If you are just taking the antibiotics prophylactically, then there should not be any problem.
Thank you for your question. This should be okay but you should check with your dentist and injector. Hope this helps!