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Vitamin D2, also known as ergocalciferol, is a form of vitamin D that can be taken from food or supplements. It is essential in the human body, contributing to a variety of physiological activities. When vitamin D2 is consumed, it undergoes a sequence of changes before becoming the biologically active form, calcitriol. Calcitriol is a hormone that regulates calcium and phosphorus levels in the body, facilitating absorption in the intestines and promoting strong bones and teeth. Aside from bone health, vitamin D2 influences the immune system, aids in infection defence, and influences cell growth and gene regulation, all of which contribute to overall health and well-being.

food sources of vitamin d2: salmon, milk products, eggs, nuts and seeds


Vitamin D2, also known scientifically as ergocalciferol, is an essential mineral with various possible health benefits. This fat-soluble vitamin, which can be received from food sources or supplementation, is important in a variety of physiological functions. Here are some of the key benefits of Vitamin D2:

  • Bone Health: One of vitamin D2’s key benefits is its role in bone health. This vitamin promotes calcium absorption and bone mineralization, which helps to keep bones strong and healthy. Vitamin D2 plays an important function in the incorporation of calcium into bone tissue by increasing calcium absorption in the intestines. This is especially important in the prevention of disorders like osteoporosis, which can cause brittle bones and an increased risk of fractures.
    Benefits of Vitamin D2: Stronger bones and immunity
  • Immune System Support: New research reveals that vitamin D2 may help to boost the immune system. It is thought to boost the body’s defences against infections and diseases, potentially aiding in the fight against numerous pathogens. While further research is needed to properly understand this association, vitamin D2’s immune-boosting capabilities emphasise its potential importance in overall health.
  • Cardiovascular Health: Another area of investigation is vitamin D2’s potential cardiovascular benefits. Preliminary study has focused on its significance in heart health and the prevention of certain cardiovascular diseases. While further research is being conducted, preliminary data suggest that vitamin D2 may contribute to the health of heart arteries, potentially aiding in the prevention of cardiovascular disorders.

Despite the numerous benefits of vitamin D2, it is critical to exercise caution and keep aware of potential risks. While vitamin D2 may have a number of health benefits, it is not a one-size-fits-all solution, and individual reactions may differ.


Vitamin D2, also known as ergocalciferol, is essential to the human body, contributing to a variety of physiological activities. When vitamin D2 is consumed from food sources or supplements, it goes through a sequence of changes before becoming physiologically active. Vitamin D2 is metabolised in the liver into calcidiol, also known as 25-hydroxyvitamin D2. This intermediate form is then carried through the bloodstream, eventually arriving at the kidneys. Calcidiol is further transformed in the kidneys into its active form, calcitriol. Calcitriol is a physiologically active molecule that has a significant impact on the body.

Calcitriol’s major job is to maintain calcium and phosphorus levels in the body within the ideal range for various physiological activities. One of its primary tasks is to increase calcium absorption in the intestines, so aiding the preservation of strong bones and teeth. Furthermore, calcitriol promotes the deposition of calcium and phosphorus into bone tissue, which aids in bone mineralization and density. Aside from its role in bone health, vitamin D2 has been recognised for its potential role in modulating the immune system, aiding in infection defence, and influencing cell growth, differentiation, and gene regulation, impacting a variety of bodily functions.


The optimal dose of vitamin D2 supplementation should be determined after taking into account individual health circumstances and consulting with a healthcare expert. Vitamin D requirements vary depending on age, gender, underlying medical problems, and sun exposure. As a result, it is critical to obtain personalised assistance to identify the best dose for your unique needs.

Vitamin D2 supplementation has been demonstrated in studies to efficiently treat deficits in people who do not get enough sun or eat a healthy diet. However, the appropriate dosage varies greatly across individuals. According to research, daily doses of vitamin D2 ranging from 400 to 2,000 international units (IU) may be adequate for different people, depending on their specific health profiles.

It is critical to emphasise that self-prescribing excessive doses of vitamin D2 without expert supervision can have negative consequences. To guarantee safe and effective vitamin D2 supplementation matched to your needs, see a healthcare provider for a full review of your vitamin D status and specific health requirements.


Vitamin D2 is also available as:

  • Vitamin D2 ergocalciferol Oil 2.5% 25,000 ug / g 1,000,000 I.U. / g Synthetic
  • Vitamin D2 ergocalciferol Powder 0.25% 2500 ug / g 100,000 I.U. / g Synthetic
  • Vitamin D2 ergocalciferol Powder 100% 4,000,000 I.U. / g Synthetic

Vitamin D2 is commonly available in:

  • Vitamin D2 tablets
  • Vitamin D2 capsules
  • Vitamin D2 powder
  • Vitamin D2 effervescent tablets

Glentworth Formulations is here to suit your every need. Everything from Tablets, Capsules and Powder blends.

If you are wanting to know more information, please get in contact with us. Either using the contact form or contacting us directly on:

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