Used improperly, they can be harmful. There are two main types of organisms that cause infections, viruses and bacteria. You can not cure a common viral infection with antibiotics. You will get better when the viral infection has run its course. You can treat bacterial infections with antibiotics.
Bacteria can become resistant to antibiotics, making it difficult to treat the infection.
These can be problems in children or adults. The answer depends on your specific health problem. Your health care provider can best answer this question. Both viruses and bacteria can cause ear pain. Severe ear pain or ear pain that persists for more than 48 to 72 hours may require a visit to your health care provider to see if antibiotics are needed.