A prospective investigation to assess the impact of 3months of treatment with epigallocatechin gallate (EGCG), vitamin D and D-chiro-inositol (DCI) in the treatment of uterine fibroids (UF) with laparoscopic myomectomy as evidenced by surgical outcomes and effect on liver function. Non-pregnant or lactating women aged between 30 and 40years were scheduled for laparoscopic myomectomy to treat symptoms or looking to conceive. After enrollment, patients were assigned to either (1) intervention group, assuming a total of 300mg EGCG, 50μg vitamin D, and 50mg DCI divided in 2 pills per day for 3months, or (2) control group, including untreated women scheduled to undergo laparoscopic myomectomy after 3months. 91 patients completed the study. The comparison of the surgical outcomes between the intervention (n = 44) and the control (n = 47) groups revealed that the treatment significantly reduces the duration of surgery (41.93 ± 7.56min vs 56.32 ± 10.63min, p < 0.001). Moreover, the treatment also reduced blood loss during surgery (149.09 ± 25.40mL vs 168.41 ± 21.34mL, p < 0.001), resulting in treated patients having higher Hb levels at discharge 11.27 ± 0.82mL vs 10.56 ± 0.82mL, p < 0.01). The surgery induced an increase in AST and in total bilirubin regardless of the assigned group, and the treatment induced no change in liver function. Our data suggest that EGCG plus vitamin D, and DCI could represent a safe option for women with UF scheduled for laparoscopic myomectomy, improving surgical outcomes without affecting liver functionality.