I've used the band-aid antiseptic with pain relief (https://www.band-aid.com/products/hurt-free/antiseptic-wash-6-oz) - on one hen - because every stitch I placed caused her so much pain that I couldn't physically get it done because she struggled so much even with the extra hands. Others barely react to the stitching process- very individual in nature. As soon as I administered it she stopped reacting to the stitching process. And made it to the other side. In general I avoid it, but in that one case the greater evil was not sewing her back up or shredding her with the suture needle.
Also had a bird with a hole in the head. Went to clean it and the antiseptic (not the bandaid stuff) came shooting back up like a fountain. Healed up and became the flock rooster. I included the 2nd picture from days later because fresh, all in all, it doesn't look too bad, right?
Fresh:
Couple days in:
Within 10 days:
Also had a bird with a hole in the head. Went to clean it and the antiseptic (not the bandaid stuff) came shooting back up like a fountain. Healed up and became the flock rooster. I included the 2nd picture from days later because fresh, all in all, it doesn't look too bad, right?

Fresh:
Couple days in:
Within 10 days: