About Vitamin D3
D3 - An Essential Vitamin
Vitamin D3 is a fat-soluble vitamin and is essential for a healthy immune system
Vitamin D – The Rock Star Vitamin
One of the most important roles of Vitamin D is to signal the intestines to absorb calcium into the bloodstream. Without enough Vitamin D, your body will start to break down bone to increase calcium levels in the blood.
Vitamin D can be activated in the alveoli, the cells responsible for oxygenating our blood and removing carbon dioxide. Coronavirus and influenza viruses invade our lungs. So the presence of Vitamin D in our lungs can perhaps have something to do with our lungs fighting off respiratory infections. Immunex provides you with 4000 ius of Vitamin D daily to help strengthen your immune system.
How it functions
Vitamin D (also known as cholecalciferol) is a fat‑soluble vitamin naturally present in a limited number of foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet (UV) radiation from sunlight interacts with the skin to initiate vitamin D synthesis.
Vitamin D obtained from sunlight exposure, foods, and supplements is biologically inactive and requires two metabolic conversion steps to become active. The first conversion takes place in the liver, where vitamin D is hydroxylated to 25‑hydroxyvitamin D [25(OH)D], commonly referred to as calcidiol. A second hydroxylation then occurs primarily in the kidneys, producing 1,25‑dihydroxyvitamin D [1,25(OH)₂D], also known as calcitriol, the physiologically active form of vitamin D.
In addition to renal activation, vitamin D metabolism has been observed in several tissues, including certain immune‑related cells, indicating a broader biological distribution beyond classical pathways.
As a fat‑soluble vitamin, vitamin D can be stored in body tissues, including the liver, allowing it to act as a reserve that contributes to maintaining nutritional balance over time as part of regular dietary intake.
Vitamins D₃, K₂ and C in Everyday Nutrition
Vitamins and minerals play an essential role in human nutrition and are involved in a wide range of normal physiological processes. Many people choose to include specific nutrients as part of a consistent dietary and wellness routine, particularly when dietary intake or lifestyle factors vary over time.
Vitamin D (also known as cholecalciferol) is a fat‑soluble vitamin that can be obtained through dietary sources, exposure to sunlight, and supplementation. Vitamin D from all sources is biologically inactive and must undergo two metabolic conversion steps in the body to become active. The first occurs in the liver, where vitamin D is converted to 25‑hydroxyvitamin D [25(OH)D], and the second takes place primarily in the kidneys, producing 1,25‑dihydroxyvitamin D [1,25(OH)₂D], the physiologically active form. In addition, vitamin D metabolism has been identified in a range of tissues, including certain immune‑related cells.
Environmental and lifestyle factors—including latitude, season, time spent outdoors, skin characteristics, and age—can influence vitamin D synthesis from sunlight. Dietary sources of vitamin D are relatively limited and include foods such as oily fish and fortified products, which contributes to why vitamin D is commonly included in everyday nutritional supplementation.
Vitamin K₂, particularly in the MK‑7 form, is frequently paired with vitamin D in nutritional formulations. Vitamin K₂ is involved in normal calcium metabolism through its role in activating calcium‑binding proteins, and is commonly included in supplements designed to complement a balanced diet. The combination of vitamins D₃ and K₂ is widely used in formulations focused on overall nutritional intake.
Vitamin C and zinc are essential micronutrients found in a wide range of foods and are well‑established components of daily nutrition. Both are commonly included in wellness products intended for regular use as part of a varied and balanced diet.
Quercetin is a naturally occurring plant compound present in many fruits and vegetables. In supplement formulations, it is often included alongside vitamins and minerals and is commonly featured in products designed for general wellness routines and consistent nutritional intake.
Vitamin D and Normal Function
Authorised scientific and regulatory assessments recognise that vitamin D contributes to:
- the maintenance of normal bones and teeth
- normal absorption and utilisation of calcium and phosphorus
- the maintenance of normal blood calcium concentrations
- normal muscle function
- normal cell division
- the normal function of the immune system
These recognised functions form the basis for the inclusion of vitamin D in everyday nutritional products.
Dietary Patterns and Individual Variation
Nutrient requirements and status can vary between individuals depending on diet, lifestyle, and environmental factors. For this reason, many adults choose to incorporate supplements into their routines to support consistent nutritional intake, particularly where dietary sources may be limited.
ImmuneX365 is formulated to provide a convenient combination of vitamins, minerals, and plant‑based ingredients commonly included in daily wellness supplementation. It is designed for regular use as part of a balanced diet and health‑conscious lifestyle.