active vitamin D3
active vitamin D3 active vitamin D3 active vitamin D3 active vitamin D3
U Perform

active vitamin D3


Adequate vitamin D is necessary for both bone and skeletal health.  Emerging research, however, also indicates the important role of vitamin D for non-skeletal functions including skeletal muscle growth, immune function, inflammatory modulation, and athletic performance.  active vitamin D3 is formulated to meet your needs.

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The role of Vitamin D in the immune system has been recognised for many years, however it was only in recent years that the implications of Vitamin D deficiency on the immune system have become clearer.


Take 4 tablets daily.

Each tablet is 1000IU

Serving size = 4000IU


Calcium Carbonate, Microcrystalline Cellulose, Maltrodextrin, Modified Maize Starch, Magnesium Stearate, Sucrose, Anti-Caking Agent (Silicon Dioxide), Cholecalciferol.

Why U perform's active vitamin D3?


As recommended by leading sports scientist

Professor Greg Whyte OBE PhD DSc FBASES FACSM


Several different types of cells in the body, including immune cells, contain the receptor for Vitamin D, which means they can respond to Vitamin D molecules, triggering different reactions in the body.

No wonder Vitamin D can affect so many aspects of health including bone health, cardiovascular health, immunity, autoimmune disease, type I diabetes, and mental health.

Bone Health

Vitamin D is necessary for strong bones and muscles. Without Vitamin D, our bodies cannot effectively absorb calcium, which is essential to good bone health.

Immune Health

There are Vitamin D receptors and activating enzymes on the surfaces of all White Blood Cells.

Vitamin D plays an important role in keeping the immune system healthy and balanced.

Mental Health

Researchers believe that because vitamin D is important to brain function, insufficient nutrient levels may play a role in depression and other mental illnesses.


Vitamin D3, sometimes known as the ‘sunshine vitamin’ is produced naturally in the skin when it is exposed to sunlight. You can also get it through certain foods. However, many factors can affect your ability to get sufficient amounts of vitamin D through the sun alone. These factors include: Being in an area with high pollution, using sunscreen, spending more time indoors, living in big cities where buildings block sunlight or having darker skin. (The higher the levels of melanin, the less vitamin D the skin can absorb.)

Although classified as a vitamin, D3 cleverly transforms into a hormone in the body and circulates in the bloodstream to help in the absorption of calcium and phosphorous. This is perhaps one of the most vital functions that Vitamin D3 performs, however, Vitamin D3 also benefits our overall health and wellbeing.

Getting sufficient Vitamin D contributes to the healthy function of our immune systems, improving resistance against certain diseases. It also plays a role in the process of cell division as well as ensuring the maintenance of healthy bones and teeth.

Our science-led, evidence backed formulation ensures you get an optimal source of vitamin D3 to help you perform at your best.