The purpose of this study is to investigate whether oral Gushen Antai pills supplementation for luteal phase support will improve ongoing pregnancy rate in women with normal ovarian reserve in fresh embryo transfer cycles.
Patients with normal ovarian function reserve (5 ≤ AFC ≤ 15, 1.2 ng/ml ≤ AMH ≤ 3.5 ng/ml).
Patients with regular menstrual cycle (21-35 days) and normal ovulation.
Initial IVF / ICSI treatment.
At least one embryo or blastocyst available for transfer.
Age ≥ 43 years old.
Body mass index (BMI) ≥ 28 Kg/m2.
"Freeze-all" strategy.
Those using the natural cycle or mild stimulation for IVF/ICSI treatment.