Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

279 questions · 289 findings · 28 reviews · Headline outcomes only

No studies found 81 · 28%GRADE not reported 9 · 3.1%Very low 90 · 31.1%Low 67 · 23.2%Moderate 24 · 8.3%High 18 · 6.2%

Standard intravenous acetylcysteine regimen (20.5 hour) vs shorter intravenous acetylcysteine regimen (12 hour)

Anaphylactoid symptoms · people with paracetamol (acetaminophen) overdose

Standard intravenous acetylcysteine regimen (20.5 hour) may leads to lower anaphylactoid symptoms compared with shorter intravenous acetylcysteine regimen (12 hour) (low certainty).

1 finding from 1 review

Cysteamine vs no intervention

Hepatotoxicity (aspartate aminotransferase > 1000 IU/L) · people with paracetamol (acetaminophen) overdose

Cysteamine may leads to lower hepatotoxicity (aspartate aminotransferase > 1000 IU/L) compared with no intervention (low certainty).

1 finding from 1 review

Cysteamine vs methionine (randomised trials)

Hepatotoxicity (aspartate aminotransferase > 1000 IU/L) · people with paracetamol (acetaminophen) overdose

It is very uncertain whether cysteamine changes hepatotoxicity (aspartate aminotransferase > 1000 U/L) compared with methionine (randomised trials) (very low certainty).

1 finding from 1 review