The Study
Zinc supplementation for prevention of acute respiratory infections in infants: A randomized controlled trial
This study gave some babies zinc pills and others fake pills to see if zinc helped them get sick less or for shorter times. It found that zinc didn't stop them from getting sick overall, but when they did get sick, they felt better faster—especially with lung infections. So it's like a helper, not a shield.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Doctors gave some babies a daily zinc syrup for two weeks to see if it helped them get sick less or less badly with coughs and lung infections.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 572 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes — fewer severe lung infections mean fewer hospital visits and less risk for tiny babies, even if they still get mild colds.
- 2Zinc didn't stop babies from getting coughs, but it made lung infections 62% less likely and shortened sick days by 12%.
- 3The good effects lasted five months after stopping the syrup.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Indian Pediatrics
Year
2014
Authors
A. Malik, A. Malik, D. Taneja, Nivedhita Devasenapathy, K. Rajeshwari
Related Content
Claims (5)
In infants aged 6–11 months in urban India, taking 20 mg of elemental zinc daily for two weeks before infection reduces the length of acute respiratory infections by 12% and lowers the occurrence of acute lower respiratory infections by 62%, but does not change how often any respiratory infection occurs.
Giving zinc supplements to infants aged 6–11 months in urban India for two weeks does not lower the number of acute respiratory infections they get. Zinc may affect how severe or how long infections last, but it does not stop them from starting.
Infants who took zinc supplements for two weeks had fewer acute lower respiratory infections for at least five months after stopping the supplements.
In infants aged 6–11 months living in urban India, zinc supplementation reduces the occurrence of acute lower respiratory infections. This reduction does not occur in older children or in populations with different nutrition or disease patterns.
Infants aged 6 to 11 months who take 20 mg of zinc daily for two weeks do not experience adverse effects severe enough to stop taking the supplement.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.