Comparison 38. Other oral interventions: low‐nickel diet (LND) + disulphiram versus normal diet + placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Primary: investigator‐rated good/excellent control of symptoms after 4 weeks	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
2 Primary: adverse events	1		Risk Ratio (M‐H, Random, 95% CI)	Totals not selected
2.1 Metallic taste	1		Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
2.2 Drowsiness	1		Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]
2.3 Elevation of liver enzymes	1		Risk Ratio (M‐H, Random, 95% CI)	0.0 [0.0, 0.0]