I’m 5 days post op gastric bypass. Sips of water is recommended not gulping. I have to take regular medications in addition to vitamins and I just sip sip. Meaning no pig gulps. If pill doesn’t go down first sip take another. Maybe try a bite or 2 of Jello for the “food” you need for vitamins. Plus your body changes after surgery and you may not feel sick with the no food and taking vitamins.
Good luck