Risk of adverse events, including those that may be due to zinc supplements Duration of · adults and children with colds and/or upper respiratory infections
1 finding from 1 review
Risk of adverse events, including those that may be due to zinc supplements Duration of · adults and children without colds
1 finding from 1 review
Change in blood zinc concentrations · adults with HIV infection
1 finding from 1 review
Serum or plasma zinc (in µmol/L) · general population of all age groups (including pregnant women) from any country, over two years of age
1 finding from 1 review
Zinc deficiency (as defined by authors, depending on age and gender) · general population of all age groups (including pregnant women) from any country, over two years of age
It is very uncertain whether foods fortified with zinc plus other micronutrients changes zinc deficiency (as defined by authors, depending on age and gender) compared with foods fortified with other micronutrients without zinc (very low certainty).
1 finding from 1 review
Serum or plasma zinc (in µmol/L) · general population of all age groups (including pregnant women) from any country, over two years of age
1 finding from 1 review
Proportion of participants developing a cold Duration of · adults and children without colds
1 finding from 1 review
Proportion with improved global symptom severity Duration of · adults and children with colds and/or upper respiratory infections
1 finding from 1 review
Risk of serious adverse events, including those that may be complications of the common cold · adults and children with colds and/or upper respiratory infections
The review found no eligible studies for this question.
1 finding from 1 review
no estimate extracted
Studies not reported
No studies found
Mean number of colds developed Duration of · adults and children without colds
1 finding from 1 review
Duration of cold symptoms (days) · adults and children without colds
1 finding from 1 review
Standardised mean global symptom severity Duration of · adults and children without colds
1 finding from 1 review
Risk of serious adverse events, including those that may be complications of the common cold Duration of · adults and children without colds
1 finding from 1 review
Duration of cold symptoms (days) · adults and children with colds and/or upper respiratory infections
1 finding from 1 review
Risk of continuing colds at study end Duration of · adults and children with colds and/or upper respiratory infections
1 finding from 1 review
Standardised mean global symptom severity Duration of · adults and children with colds and/or upper respiratory infections
1 finding from 1 review
All‐cause mortality · children with measles and pneumonia
It is very uncertain whether zinc changes mortality compared with placebo (very low certainty).
1 finding from 1 review
Fever clearance time · children with measles and pneumonia
It is very uncertain whether zinc changes time to fever abatement compared with placebo (very low certainty).
1 finding from 1 review
Mental development index (MDI) at 18 months · infants and children
1 finding from 1 review
Psychomotor development · infants and children
1 finding from 1 review