Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

4,703 questions · 15,007 findings · 1,416 reviews

No studies found 2,881 · 19.2%GRADE not reported 1,551 · 10.3%Very low 3,111 · 20.7%Low 3,881 · 25.9%Moderate 2,669 · 17.8%High 914 · 6.1%

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Analgesic‐decongestant vs placebo

Adverse effects: drowsiness, hypersomnia, lethargy, excessive sleepiness, and other central nervous system adverse effects · otherwise healthy adults and children with common cold symptoms

Analgesic‐decongestant showed no clear difference in adverse effects: drowsiness, hypersomnia, lethargy, excessive… compared with placebo (moderate certainty).

1 finding from 1 review

Antihistamine‐analgesic‐decongestant vs placebo

Global evaluation · otherwise healthy adults and children with common cold symptoms

Antihistamine‐analgesic‐decongestant showed no clear difference in global evaluation: after 3 days of treatment (included children 2 to… compared with placebo (low certainty).

2 findings from 1 review

Antihistamine‐analgesic‐decongestant vs placebo

Global evaluation: after 5 days of treatment (included children 2 to 12 years old only) · otherwise healthy adults and children with common cold symptoms

Antihistamine‐analgesic‐decongestant showed no clear difference in global evaluation: after 5 days of treatment (included children 2 to… compared with placebo (low certainty).

1 finding from 1 review

Antihistamine‐decongestant vs placebo

Adverse effects: drowsiness, hypersomnia, and excessive sleepiness · otherwise healthy adults and children with common cold symptoms

Antihistamine‐decongestant showed no clear difference in adverse effects: drowsiness, hypersomnia, and excessive sleepiness compared with placebo (low certainty).

1 finding from 1 review