Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

24 questions · 24 findings · 12 reviews

No studies found 19 · 79.2%GRADE not reported 1 · 4.2%Very low 4 · 16.7%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Zinc vs placebo

Health‐related quality of life · Patients with taste disturbances (dysgeusia/hypogeusia; idiopathic, zinc-deficient, or secondary to chronic renal failure)
1 finding from 1 review
  • Interventions for managing taste disturbances 2017 · Cochrane All outcomes
    Results (health-related quality of life): None of the studies reported data on health-related quality of life. Heckmann 2005 (zinc) reported that signs of depression were less severe (Beck Depression Inventory P<0.05;…
    1 study
    GRADE not reported

Intervention not reported

Quality of life · adults over 18 years with tinnitus

The review found no eligible studies for this question.

1 finding from 1 review