Antibiotics: "take one for a cold; finish the old strip".
As forwarded
"Take an antibiotic for a cold or viral fever; finish the leftover strip from last time."
A household practice rather than one viral text. A January 2026 survey report found 78% of Haryana respondents admitted taking antibiotics without seeing a doctor, and about half of Delhi pharmacists said they were often asked for antibiotics without a prescription, "often demanded even for viral infections" [S1]. ICMR's own guideline notes antibiotics are "dispensed over the counters without a prescription" in India [S3]. Reach of a specific forward: not available. Practice documented
Verdict
Colds and most fevers are caused by viruses, and antibiotics do not kill viruses; they do not speed recovery but do cause side effects and breed resistant germs. Never take leftover antibiotics, and see a doctor if a fever does not settle, because dengue, malaria and typhoid need testing, not a guess.
What the evidence says
What is right, partly. Some sore throats, sinus infections and ear infections are bacterial and do benefit from antibiotics; that is a diagnosis for a doctor. [S3] And "finish the course" has long been standard advice, which some public health pages still give. [S5]
Colds. A Cochrane review of six trials (1,047 people) found antibiotics did not reduce lingering cold symptoms (RR 0.95, 95% CI 0.59–1.51) but did increase side effects (RR 1.8; in adults 2.62): "There is no evidence of benefit from antibiotics for the common cold". Routine use is not recommended. [S2]
India's guideline agrees. ICMR: "Antimicrobial therapy is not indicated for viral URTI"; for acute bronchitis, "Antibiotics are not indicated even if sputum is purulent"; "No antibiotics are required for the majority of patients with acute febrile illness" without an obvious diagnosis; in dengue antibiotics "are not needed"; and "Duration of therapy should be optimized to minimum possible". Over-the-counter sales and low public awareness are named as major drivers of resistance. [S3]
Resistance kills. An estimated 1.27 million deaths worldwide in 2019 were directly attributable to bacterial antimicrobial resistance and 4.95 million were associated with it; "AMR is a leading cause of death around the world, with the highest burdens in low-resource settings". [S4]
Leftover strips. Public health guidance says "never share antibiotics with anyone else or use leftover antibiotics", and that antibiotics are not effective against a cold or flu. [S5] A leftover strip is the wrong drug, dose or length for a new illness, and can mask a serious infection that needs a test.
An honest wrinkle. A 2017 BMJ analysis argued there is little evidence that stopping a prescribed course early causes resistance, and that the bigger risk is taking antibiotics for longer than needed. [S6] Either way, the safe rule is to take antibiotics only when prescribed for this illness, exactly as the prescriber says, and never to reuse old ones.
What to do instead
A fever that does not settle, especially in the monsoon: see a doctor for testing (dengue, malaria, typhoid) instead of taking leftover antibiotics. Most acute fevers, including dengue, need no antibiotic. [S3]
Cold, sore throat with a runny nose, or cough: rest, fluids and symptom relief; no antibiotic. [S3][S2]
Take antibiotics only when prescribed for the current illness, exactly as directed. Never use leftover strips or share them. [S5][S3]
Ask the doctor: "is this bacterial?" and "for how many days?" [S3][S6]
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Sources
- S1The Tribune. Self-medication, easy antibiotic access drive antimicrobial resistance: report.Circulation only; not evidence
tribuneindia.com/news/india/self-medication-easy-antibiotic-access-drive-antimicrobial-resistance-report - S2Kenealy T, Arroll B. Antibiotics for the common cold and acute purulent rhinitis. Cochrane CD000247.Tier 1
cochranelibrary.com/cdsr/doi/10.1002/14651858.CD000247.pub3/pdf/CDSR/CD000247/CD000247_abstract.pdf - S3Indian Council of Medical Research. Treatment Guidelines for Antimicrobial Use in Common Syndromes, 2nd edition.Tier 2
icmr.gov.in/icmrobject/custom_data/pdf/resource-guidelines/Treatment_Guidelines_2019_Final.pdf - S4Antimicrobial Resistance Collaborators. Global burden of bacterial antimicrobial resistance in 2019: a systematic analysis. Lancet 2022.Tier 3
healthdata.org/node/9472 - S5nidirect (Northern Ireland government). Use antibiotics properly to keep them working.Tier 4-equivalent government health page
nidirect.gov.uk/node/9482 - S6Llewelyn MJ et al. The antibiotic course has had its day. BMJ 2017; summarised by the University of Oxford.Tier 3
phc.ox.ac.uk/news/has-the-antibiotic-course-had-its-day
Tiers are as graded in the research file. "Circulation only" sources document that a claim circulates and are never cited as evidence. Where a primary paper could not be opened, the page says so in the Honest note.
Reviewed by
Every evidence sentence on this page traces to the sources listed above, but no registered physician has yet signed it off. When one has, their name, registration number and date of review will appear here. Until then, read this page as a sourced guide, not as medical advice: for any symptom, call 108 or 112, or see a doctor.
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