Antibiotics do not work against viruses. They target bacteria, so they are ineffective for viral infections such as the flu, cold, or most cases of bronchitis. They should only be used when a bacterial infection is diagnosed or strongly suspected, and they are prescribed by a healthcare professional. Using antibiotics for viral illnesses can contribute to antibiotic resistance and side effects without helping the illness resolve. Key points:
- Viruses vs bacteria: antibiotics kill or inhibit bacteria, not viruses. This fundamental difference means antibiotics are not effective for viral infections.
- Appropriate use: reserve antibiotics for confirmed or strongly suspected bacterial infections as advised by a clinician. Misuse can lead to antibiotic resistance and unnecessary side effects.
- Common viral illnesses: colds, flu, most bronchitis, and many sinus or ear infections are viral and do not require antibiotics. If a bacterial complication develops, a clinician may prescribe antibiotics then.
- When in doubt: consult a healthcare professional for an accurate diagnosis and treatment plan, especially if symptoms are severe, persistent, or worsening.
If you’d like, I can tailor this guidance to your specific symptoms or situation and provide steps to discuss antibiotic use with a clinician.
