NO. They are antibiotics.
anti = against; and bio = life.
Therefore antibiotics kill bacteria etc.
(Indirectly, antibiotics may contribute to pain relief if the pain is caused by the types of infection resulting from those germs which antibiotics kill. However, antibiotics should never be taken as a direct painkiller. Rather, one should take them to fight germs when one has become infected; but only after ascertaining that antibiotics are needed and will help. A doctor should be consulted. Taking antibiotics for too long, or when not needed, can have unwanted consequences.)