Whats wrong with your chick? Neosporin and some generics of it use a pain reliever that does not end in "caine" so, it is safe for chickens. Here is info from www.PoultryPodiatry.com Give Painkiller
CAUTION: Do NOT give Ibuprofin (Advil, etc.) or Acetaminophen (Tylenol, etc.) to birds! Those are harmful to them.
Buffered aspirin (such as Bayer, etc.) can be used for a chicken to help reduce:
Stress, listlessness, discomfort, pain
Fever
Swelling / inflammation. Caution:
Aspirin thins blood and keeps it from clotting as quickly as normal.
You should wait until internal and external injuries have begun to heal before using aspirin.
Birds bruise more easily when on aspirin.
Note: A standard baby Aspirin is 80 mg, and a standard adult Aspirin pill is 325 mg.
Examples: For a 6-lb. Large Fowl Leghorn rooster, 2 times per day give 1/2 of a regular aspirin ( = ~300 mg total per day).
For a Bantam 1.6-lb. Bantam Leghorn rooster, 2 times per day give 1/2 of a baby aspirin (= ~75 mg total per day).
To administer:
To give immediately or in individual administrations: Crush up and split dose up into 2 or 3 administrations per day. Sprinkle the powder on a small tasty treat such as fruit or yogurt and give to the chicken.
To have the chicken self-administer throughout the day: Crush up the total daily dose and dissolve in the approximate amount of water that the chicken drinks each day. Pour into chicken's drinking container.
Never give a chicken any kind of painkiller with 'caine' in the name. These are EXTREMELY toxic to chickens.
Do NOT use a Triple Antibiotic Ointment with Painkiller because almost all include '-caine' ingredients.
Exception: Neosporin with Painkiller products usually only use Pramoxine HCl as the painkiller ingredient, and that is alright for chickens.