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Evidence found and GRADE certainty

106 questions · 122 findings · 17 reviews

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No studies found 23 · 18.9%GRADE not reported 5 · 4.1%Very low 28 · 23%Low 37 · 30.3%Moderate 28 · 23%High 1 · 0.8%

Intervention not reported

Clinical pregnancy; type of antioxidant (natural conceptions and undergoing fertility treatments) ‐ N‐acetylcysteine versus L‐carnitine№ of participants: 164(1 RCT) · women with subfertility

It is very uncertain whether the intervention changes clinical pregnancy; type of antioxidant (natural conceptions and… (very low certainty).

1 finding from 1 review

Intervention not reported

Clinical pregnancy; type of antioxidant (natural conceptions and undergoing fertility treatments) ‐ Melatonin lower dose versus melatonin higher dose№ of participants: 140(2 RCTs) · women with subfertility

The intervention showed no clear difference in clinical pregnancy; type of antioxidant (natural conceptions and… (low certainty).

1 finding from 1 review

Antioxidants vs control intervention

Pain free by end of study (day 6) · patients with chronic pancreatitis and pancreatic pain

Antioxidant showed no clear difference in pain‐free participants compared with control intervention (low certainty).

1 finding from 1 review

Antioxidants vs control intervention

Adverse effects—parallel trials · patients with chronic pancreatitis and pancreatic pain

Antioxidant probably leads to higher adverse effects—parallel trials compared with control intervention (moderate certainty).

1 finding from 1 review

Antioxidants vs control intervention

Adverse effects—cross‐over trials (unpaired data) · patients with chronic pancreatitis and pancreatic pain

Antioxidant probably leads to higher adverse effects—cross‐over trials (unpaired data) compared with control intervention (moderate certainty).

1 finding from 1 review