I everyone, I would like your opninions on Tylenol No.1 (No.2,No3,No.4), about including this type of drug in a PSK, fisrt aid kit. What about the side effects of codeine.

Tylenol No.1 is:
ACETAMINOPHEN 300 MG
CAFFEINE 15 MG
CODEINE PHOSPHATE 8 MG