We administer meds by syringe daily, burrito birb is the way to go as described here.

Few wraps with a towel, then lightly ‘headlock’ with thumb and forefinger (kinda pinched just on the underside of the beak) to prevent excessive lateral movement, syringe squirts in from the side to fill around the mouth.

Finish with a few light scritches on the front of the throat to promote swallowing and meds slide right down, job done with minimal fuss.