A multicentre, randomised, double-blind, placebo-controlled clinical trial to evaluate the use of Chinese herbal medicine in the management of endometriosis: a prospective study

INTERVENTION: A specific Chinese herbal formula (Endoherb) versus placebo. CONDITION: Endometriosis ; Urological and Genital Diseases ; Endometriosis PRIMARY OUTCOME: Pain intensity due to endometriosis, measured quantitatively on the VAS and qualitatively as descriptive values. SECONDARY OUTCOME: 1. Quality of life using the 36‐item Short‐Form health survey (SF‐36) and a study design health survey tool; 2. Serum CA 125 levels INCLUSION CRITERIA: 1. Women, aged 18 ‐ 43 years 2. Diagnosed with endometriosis by laparoscopy and the severity staged (grade I ‐ IV) 3. At least three months of pain measuring more than 30 mm on visual analogue scale (VAS) scale