Antivenom injection contains preformed antibodies while polio drops that are administered into the body contain 

Antivenom injection is an antiserum (preformed antibodies) derived from snake poison and administered to a person who has been bitten by a snake. In an emergency, it is used to provide quick immunity.
Vaccinations against poliomyelitis are known as polio vaccines (polio). Inactivated poliovirus (antigen) is given by injection, while attenuated poliovirus (antigen) is delivered by mouth. Polio vaccines that have been inactivated are quite safe. The injection location may experience some redness or soreness. Vaccine-associated paralytic poliomyelitis is caused by oral polio vaccinations.