There's not an easy answer for the tablets I'm on. I was told the meal could be milk and for those tablets that can't be taken with milk (sigh), to flush through with as much water as possible to make sure they don't sit in my pouch.
Had a spot of bother with ibuprofen last year so have been really careful on this.
Depends what tablets you are on, your GP may not 'get it', pharmacist unlikely so I'd get an answer from you bariatric nurse as to your exact tablets.