Vitamin D is a nutrient, hormone, and immunomodulator crucial for overall health. Produced in the skin through sun exposure (as Vitamin D3, cholecalciferol), it's also found in lesser amounts in foods rich in ergosterol (Vitamin D2, ergocalciferol). Once formed, Vitamin D travels to the liver, converting into a hormone that regulates calcium homeostasis and subsequently processes in the kidneys. This active form promotes calcium absorption in the intestines and kidneys, maintaining optimal blood calcium levels.
Vitamin D deficiency, common in individuals with insufficient sun exposure, dietary limitations, or liver/kidney disease, is a significant concern, particularly in high-latitude regions like Russia. Beyond calcium regulation and bone health, Vitamin D receptors exist in numerous organs and tissues, impacting various bodily systems. As a hormone, it regulates over 200 genes, playing a vital role in diverse functions. Chronic deficiency increases the risk of several serious health issues.
Dietary Vitamin D intake is often insufficient (0.7-5.4 mcg/day). While foods like fatty fish (cod liver oil, herring), egg yolks, and liver contain Vitamin D, supplementation is usually necessary. Vitamin D3 is approximately 50% bioavailable compared to D2. Blood tests (25-hydroxyvitamin D) determine Vitamin D levels. Optimal levels (50-60 ng/mL) may require 4000 IU (100 mcg) daily, with 2000 IU (50 mcg) recommended for adults and 4000 IU for those at higher risk. Most multivitamins provide insufficient Vitamin D.
NSP Vitamin D3 is produced via biotechnological synthesis using natural, New Zealand-sourced ingredients. It contains naturally sourced, non-GMO sweeteners (mannitol, sorbitol, xylitol) that meet pharmaceutical standards.





