Gluten Free
Gluten Free
Lactose and Dairy Free
Lactose and Dairy Free

Vitamin D Tablets (LGC informed sport tested)

Vitamin D has many important functions including supporting the immune system and preventing common allergies.

  • Informed Sport registered product
  • Essential for healthy bones and teeth.
  • Utilises Vitamin D3 which has the greatest absorbency rate.
  • Each tablet contains 5000 International Units.
  • 90 tablets.

Availability: In stock

Product Description

Assurance for Athletes

At Proto-col we have made Informed-Sport part of our existing quality assurance systems to ensure our products are safe for athletes to use.

This product underwent an extensive independent testing procedure carried out by the world class anti-doping laboratory LGC Sport and Specialised Analytical Services to ensure they are free from a wide range of substances banned by the World Anti-Doping Agency (WADA). This provides the highest level of assurance for athletes that this product is safe to use.


Each proto-col vitamin D tablet contains 5000 international units. Vitamin D is a fat-soluble vitamin and is unique because it functions as a hormone whilst the body synthesises the vitamin from adequate sun exposure. With a lack of sunlight people can become deficient therefore it may be necessary to take vitamin D as a food supplement. At proto-col we use vitamin D3 in this supplement which is the real vitamin D, as it is what is synthesised naturally in our skin from exposure to the sun. This type of vitamin D has a greater absorbency rate within the human body and is an essential vitamin only found in very limited quantities of natural food sources. 

Recent studies have shown that sufficient levels of vitamin D can have positive effects on numerous vital body functions including: strength and power, immune function and the prevention of common allergies.

Proto-col's Vitamin D formulation has been designed by Greg Whyte OBE PhD FACSM of 76 Harley Street London.

Additional Information

Additional Information

Suitability Gluten free, Lactose free, Dairy free, Suitable for vegetarians
Volume 90 tablets
Additional Info

Maintains calcium balance.
Essential for bone growth and functioning of the nervous system.
Enhances immunity.
Can decrease the risk of high blood pressure.
Can help with seasonal affective disorder.

Natural food sources of vitamin D include oily fish and egg yolks, but these sources contain very low levels of vitamin D and so without a constant exposure to the sun it can become very difficult to maintain a healthy dosage of vitamin D.

Vitamin D3, Dicalcium Phosphate, Microcrystalline Cellulose, Magnesium Stearate, Silica

Lactose free, dairy free, gluten free.  Suitable for vegetarians.

Take 1 tablet per day.


The following certificates of analysis are available for download:

vitamin D tablets (Batch P08278)

vitamin D tablets - Informed Sport registration certificate

Customer Reviews (1)

Please note: The following reviews are the unsolicited & unedited opinions of their respective authors. While we will use reasonable endeavours to verify the accuracy of any information we place on the Website, we make no warranties, whether expressed or implied in relation to its accuracy. Individual results may vary from user to user.

Great Product
A very important Vitamin to aid my recovery, and this is an excellent product to help do just that. Review by CT (Posted on 26/08/2017)
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