ArticleCureus2026
Efficacy and Safety of Vaginal Estradiol Hemihydrate as an Adjunct to Oral Estradiol Valerate in Hormone Replacement Therapy-Frozen Embryo Transfer (HRT-FET) Cycles: A Retrospective Study.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Abstract
objectiveTo evaluate the efficacy and safety of vaginal estradiol hemihydrate as an adjunct to oral estradiol valerate in improving endometrial thickness and pregnancy outcomes in the hormone replacement therapy-frozen embryo transfer (HRT-FET) cycle. MATERIALS AND
methodsThis retrospective observational study was conducted at Kamala Polyclinic and Nursing Home, Mumbai, India, and included women aged 25-42 years undergoing HRT-FET treatment cycles between May and July 2024. Only those patients were included in this study whose endometrial thickness was <8 mm after administering oral estradiol valerate 12 mg OD for 12 to 15 days and who achieved a clinically adequate endometrium after co-treatment with vaginal estradiol hemihydrate 2 mg twice daily for two to three days. The study endpoints were measured as an increase in endometrial thickness, clinical pregnancy rate, and safety.
resultsMean (SD) endometrial thickness increased significantly from 7.47 (0.97) mm to 8.68 (1.34) mm after vaginal supplementation (p < 0.001). The clinical pregnancy rate was 50%. No adverse events were reported.
conclusionIn this study, administration of estradiol hemihydrate by vaginal route as an adjuvant helped to increase the endometrial thickness and was associated with higher clinical pregnancy in women with a thin endometrium following orally administered estradiol valerate alone.
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