Ingredient

Cholecalciferol

Amount per serving

15μg

% against RDA

300%

Absorbability comments

Highly bioavailable form

Ingredient:

Amount per serving:

% against RDA:

Absorbability comments:

Cholecalciferol

15μg

300%

Highly bioavailable form

Benefits

Vitamin D is widely recognised for its critical role in supporting bone health and immune function, but its impact extends far beyond these areas. It plays a vital role in mental health, hormonal balance, inflammation reduction, and glucose metabolism. Vitamin D is essential for proper hormone signalling, and a deficiency in this nutrient is surprisingly common, affecting up to 40% of the population, particularly in regions with limited sun exposure or during the winter months.Research has shown a link between low vitamin D levels and more severe PMS symptoms, including mood swings, fatigue, and cramps. Studies indicate that correcting a deficiency through supplementation can reduce PMS symptoms by up to 41%. Vitamin D also aids in reducing inflammation, which contributes to pain and hormonal imbalances, and supports optimal glucose metabolism, helping regulate insulin sensitivity.

Evidence

  • Vitamin D supplementation in women with primary dysmenorrhea (period pain not due to known reason) and vitamin D deficiency significantly lessened menstrual pain severity.
  • It led to reduced reliance on painkillers and effectively
    raised serum 25(OH)D concentrations.
  • Higher blood levels of Vitamin D were strongly associated
    with lower pain intensity.
  • D3 is approximately 87% more potent in raising and maintaining serum 25(OH)D concentrations and produces 2- to 3-fold greater storage of vitamin D than does equimolar D2



Lin KC, Huang KJ, Lin MN, Wang CY, Tsai TY. Vitamin D Supplementation for Patients with Dysmenorrhoea: A Meta-Analysis with Trial Sequential Analysis of Randomised Controlled Trials. Nutrients. 2024 Apr 8;16(7):1089. doi: 10.3390/nu16071089. PMID: 38613122; PMCID: PMC11013696. Robert P. Heaney, Robert R. Recker, James Grote, Ronald L. Horst, Laura A. G. Armas, Vitamin D3 Is More Potent Than Vitamin D2 in Humans, The Journal of Clinical Endocrinology & Metabolism, Volume 96, Issue 3, 1 March 2011, Pages E447–E452