Can an ancient herbal remedy boost IVF pregnancy rates?

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Women aged 22 to 39 years (inclusive). * Diagnosis of diminished ovarian reserve (DOR), defined by meeting at least two of the following three criteria: 1, Basal follicle-stimulating hormone (FSH) level between 10 and 25 IU/L (measured on menstrual cycle days 2-4); 2, Anti-Müllerian hormone (AMH) level \< 1.1 ng/mL; 3, Antral follicle count (AFC) \< 7 (total count of follicles 2-10 mm in diameter in both ovaries). * Diagnosis of infertility, defined as failure to achieve a clinical pregnancy after 12 months or more of regular unprotected sexual intercourse. * Diagnosis of Kidney Deficiency pattern according to Traditional Chinese Medicine criteria, as defined in the study protocol. * Scheduled to undergo a fresh in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI) cycle. * Willing and able to provide written informed consent. Exclusion Criteria: * Uterine structural abnormalities likely to impair implantation or pregnancy (e.g., untreated submucosal fibroids, severe intrauterine adhesions, uterine septum). * Known abnormal karyotype in either partner. * Uncontrolled or severe medical conditions (e.g., hypertension, diabetes, thyroid dysfunction, hepatic/renal insufficiency, symptomatic heart disease). * Diagnosed severe psychiatric disorders (e.g., schizophrenia, bipolar disorder). * History of prior pelvic radiation or cytotoxic chemotherapy. * Active genital tract infection. * Diagnosed or suspected severe (ASRM stage III-IV) endometriosis with recurrent symptoms. * Planned use of donor oocytes or preimplantation genetic testing (PGT). * History of repeated IVF/ICSI failure (≥3 failed egg retrieval cycles or ≥3 failed transfers of high-quality embryos). * Known allergy to any component of the investigational herbal formula. * Participation in another clinical trial within the past 3 months. * Use of medications known to affect ovarian function (e.g., DHEA, growth hormone) within the past month. * Current heavy alcohol consumption or smoking. * Any other condition deemed by the investigator to make the participant unsuitable for the study.