Vitamins & minerals

Vitamin D3

A hormone in disguise — and most of us are low.

What it is

Vitamin D3 (cholecalciferol) behaves more like a steroid hormone than a vitamin. Receptors for it appear in the ovary, endometrium and placenta, which is why it keeps showing up in fertility research.

Why it’s used

Supports healthy immune function and calcium absorption.
Vitamin D receptors are present in reproductive tissue.
Deficiency is extremely common, especially in northern climates and winter months.

What research says

Observational studies associate sufficient vitamin D status with higher clinical pregnancy rates in ART cycles.
Cochrane reviews find vitamin D supplementation in pregnancy may reduce risk of pre-eclampsia and low birth weight.
Optimal serum 25(OH)D targets are debated; testing is the most reliable way to dose.

Typical dose: 1,000–2,000 IU daily, or as directed after testing your levels.

Lunara products with Vitamin D3

Prenatal Gummies

Vitamin D3 in the daily prenatal blend

View product

References

1.Chu J, et al. Vitamin D and assisted reproductive treatment outcome: a systematic review. Hum Reprod. Source
2.Palacios C, et al. Vitamin D supplementation for women during pregnancy. Cochrane Database Syst Rev. Source

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Educational information only. These statements have not been evaluated by the FDA. This content is not medical advice and Lunara products are not intended to diagnose, treat, cure, or prevent any disease.