Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	68 women with primary dysmenorrhoea Data from 1 RCT	Constipation 0/35 (0%) with LUNA 31/33 (94%) with LPSN	OR 0.02 95% CI 0.01 to 0.06	Large effect size	LUNA