Why you need OPTIMUM levels of vitamins and minerals NutriShield Multi Vitamins and Minerals

3-a-day SYNERGISTIC formula

However powerful the effect of an individual nutrient on health – like vitamin D, vitamin C, Omega 3 or curcumin – it is the combination that matters. In this respect 1+1+1 really can equal much more than 3.


There are RDAs – Recommended Daily Amounts – for 23 vitamins and minerals

Why you need OPTIMUM levels of vitamins and minerals NutriShield Multi Vitamins and Minerals

But RDAs (also known as RNIs-Reference Nutrient Intakes or NRVs-Nutrient Reference Values) are set only at a minimum level that will prevent deficiency leading to disease. For example, the RDA for vitamin C will prevent scurvy and the RDA for vitamin D will prevent rickets. But these are hardly modern threats.

So “adequate to prevent deficiency” does not mean optimum to promote vitality and health.

For example, years of research indicate that the optimum levels of the following nutrients are significantly higher than the RDAs:

  • B vitamins, which are vital for energy. The optimum levels are 3 – 5 times the RDA.
  • Vitamin C – the optimum level is 500mg a day (the RDA is only 60mg).
  • Vitamin D – optimum intake is far higher than the current, woefully inadequate, RDA level. So Public Health England are now recommending that everyone should supplement in the winter. The higher levels trigger multiple health benefits see https://nutrishield.com/the-products/vitamin-d/.
  • Vitamin E. An important anti-oxidant which protects against tissue damage from free radical action – including DNA damage. It is a vital immune system nutrient and works synergistically with vitamin C. The combination of vitamin E, C and zinc has been shown to have an important effect on long term eye health.
  • Selenium – depletion is linked to a higher risk of cancer. The optimum level is at least 2½ times the RDA.
  • Chromium is involved in the metabolism of fats and carbohydrate and insulin, which is why adequate chromium is important for everyone and especially diabetics or pre-diabetics.

On the other hand, there are some vitamins and minerals where it is NOT advisable to supplement with more than the RDA – vitamin A being a good case in point. And there are other nutrients where the average diet does provide enough.

Nutrishield Essentials contains all 23 essential vitamins and minerals at the levels considered optimum for a daily supplement according to 35 years of research by Dr Paul Clayton.

And all the vitamins and minerals are natural-source in the forms that are most bioavailable. So they’re just as effective and potent as the ones you eat in fruits, vegetables and other foods.

Optimum levels of vitamins and minerals in NutriShield Essentials

Typical valuesper caplet% RDA/NRI/NRV
Vitamin C500 mg625%
Vitamin E (d-alpha tocopherol)55.5 mg (83 IU)
Pantothenic Acid (Vitamin B5)11.25 mg187%
Thiamin (Vitamin B1)7.5 mg682%
Riboflavin (Vitamin B2)7.5 mg536%
Vitamin B67.5 mg
Biotin (Vitamin B7)150 mcg300%
Vitamin D3 (natural)20 mcg (800 IU)400%
Vitamin B126.75 mcg270%
Folic Acid (Vitamin B9)200 mcg100%
Niacin (Vitamin B3)16 mg100%
Vitamin K1 + K275 mcg100%
Selenium150 mcg273%
Chromium120 mcg300%
Zinc10 mg100%
Manganese2 mg100%
Copper1 mg100%
Iodine100 mcg67%
Molybdenum40 mcg80%
Magnesium114 mg30%
Calcium176.5 mg22%

Quick summary

Why you need OPTIMUM levels of vitamins and minerals NutriShield Multi Vitamins and Minerals

RDAs are not set to achieve optimum health – but to avoid deficiency. So a simple A-Z vitamin and mineral pill is not your best supplement choice. Nutrients that can benefit you at higher levels are the B vitamins (for energy),
vitamins C, D, E and selenium and chromium.

Links and References:






B Vitamins and the Brain: Mechanisms, Dose and Efficacy—A Review  David O. Kennedy: Nutrients. 2016 Feb

Chromium, Glucose Intolerance and Diabetes Richard A. Anderson , PhD, FACN Journal of the American College of Nutrition  Volume 17, 1998 – Issue 6