Using Antibiotics Wisely: Why "More" Isn't Better
Antibiotics are life-saving — but misusing them makes them stop working, for everyone. A clear guide to what antibiotics do (and don't) treat, and how to use them responsibly.
Antibiotics are among the greatest advances in medicine — they turn once-deadly bacterial infections into treatable ones. But there is a serious, growing problem: the more we misuse them, the less they work, and this affects everyone, not just the individual. "Antibiotic resistance" is one of the biggest health threats of our time. The reassuring part is that using antibiotics wisely is simple, and each of us can help. This is a plain-language guide to what antibiotics do, what they don't, and how to use them responsibly.
What Antibiotics Do — and Don't — Treat
Antibiotics fight bacterial infections. They do nothing against viruses — which cause the vast majority of coughs, colds, flu, most sore throats, and many other everyday illnesses. Taking an antibiotic for a viral illness will not help you recover faster; it just exposes you to side effects and fuels resistance. This is why a good doctor will often, quite correctly, tell you that you do not need an antibiotic. That is careful medicine, not a doctor withholding treatment.
What Is Antibiotic Resistance?
When antibiotics are used too often or incorrectly, bacteria can change and survive, so the drugs stop killing them. These resistant bacteria can then spread. The result is infections that become hard or even impossible to treat — turning once-minor problems dangerous again. Because resistant bacteria spread between people, one person's misuse can affect the whole community. This is why responsible use is a shared responsibility. (Content was rephrased for compliance with licensing restrictions; based on [WHO](https://www.who.int/health-topics/antimicrobial-resistance) and [CDC](https://www.cdc.gov/antibiotic-use/data-research/facts-stats/index.html) guidance.)
How to Use Antibiotics Responsibly
- Only take antibiotics prescribed by a doctor — never buy them over the counter or take leftovers
- Do not pressure your doctor for antibiotics for a cold, flu, or viral illness
- Take them exactly as prescribed — the right dose, at the right times, for the full course your doctor advises
- Do not stop early just because you feel better, unless your doctor tells you to
- Never share antibiotics or use someone else's prescription
- Do not save leftovers for "next time" — and dispose of unused medicine safely
When to See a Doctor
See a doctor for an infection you are worried about, or symptoms that are severe, persistent, or worsening — and let the doctor decide whether an antibiotic is truly needed, and which one. Trust that guidance, including when the answer is "not this time". An online consultation is a good way to have symptoms assessed and get advice on whether an antibiotic is appropriate — helping avoid both under- and over-use. Using these precious medicines wisely keeps them working, for you and for everyone. (See our guides on colds and flu, and viral fever.)