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  • Kindly note that we are re-branding Zest for Life and that the new labels will be green - 
    replacing the silver labels we have had for 12 years - but this will be done on a systematic
    roll-out, and you will still receive vitamin products with silver labels for quite some time.

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Vitamin D - calciferol - information page

Vitamin D is also referred to as calciferol and can rightly be called the sunshine vitamin, since the body, in a sunny climate can manufacture this nutrient from sunshine on your skin using cholesterol from your body to do so.

Please remember that this can be achieved in about 30 minutes by fair skinned people, while dark skinned people, because of the pigmentation need about 3 hours to reach the same level of manufacture. The sunlight needed for this process is pure unfiltered sunlight.

vitamin d calciferol

on this page

Vitamin D is required for

Vitamin D helps with increasing the absorption of calcium, assists in bone growth and the integrity of bone and promotes strong teeth.

It also helps regulate the amount of phosphorus in the body as well as assisting in a healthy heart and nervous system. In some recent studies it has also shown great promise in assisting psoriasis, the immune system, thyroid function as well as normal blood clotting.

Deficiency of vitamin D

A shortage can lead to softening of the bone and muscle twitching and convulsions, and in children it causes rickets - resulting in bent legs. In adults, the shortage causes loss of minerals from the bones, (osteomalacia) where the bones are sore, tender, and weak muscles with the possibility of deafness developing. In older people, osteoporosis may appear when protein is also lost from the bone. Vitamin D in short supply is also linked to having a burning sensation in the mouth and throat, diarrhea, insomnia and visual problems.

Dosage

The dosage underneath is the Recommended Dietary Allowance (RDA), but be aware that this dosage is the minimum that you require per day, to ward off serious deficiency of this particular nutrient. In the therapeutic use of this nutrient, the dosage is usually increased considerably, but the toxicity level must be kept in mind.

Male 400 iu, female 400 iu.

Toxicity and symptoms of high intake

Some clinical guidelines for toxicity are sometimes set as 5,000 to 10,000 IU per day to cause toxicity, but other researchers place the value much higher to reach toxicity. You are however advised to keep your supplement intake to no more than 600 IU per day. Having too much vitamin D in your system could leave a too elevated calcium level, a lower appetite, increased thirst, nausea, vomiting, drowsiness, abdominal pain. A long-term effect of too much vitamin D is the deposit of calcium in soft tissues of the body including the blood vessel walls and kidneys where it can cause serious damage.

Best used with

Check to have vitamin A around this vitamin as well as calcium and phosphorus.

When more may be required

When you are very seldom exposed to sunlight, or if you always wear sunscreens with a SPF factor higher than 8, you might need extra vitamin D. This is also the case if you are on a strict vegan diet and older people are also advised to check their level of vitamin D. People with compromised kidneys or liver are at risk of too little of this vitamin, since the kidneys and liver are required to activate this vitamin in processes taking place in those organs.

Other interesting points

Vitamin D is also classified as a hormone by certain people.

Food sources of vitamin D

Vitamin D is present in fatty fish like kipper, sardines, salmon, tuna and mackerel, liver, egg yolk and butter. Smaller amounts are also present in dark leafy vegetables.

Vitamin D contained in the following Zest for Life products

Our Zest for Life vitamin and supplement range
SPECIALTY FORMULAS
CLASSIC VITAMIN RANGE BELOW

adaptogens cope balance not stimulant not sedative

dermaxime anti-aging supplement most advanced dietary way to fight aging

anti-oxidants kills free radicals that can cause premature aging and degenerative diseases

apple cider vinegar capsules

dietary enzymes

hair skin nail boost stong nails glossy hair clear complexion

millennium 2000 weight loss capsule

oystacal calcium supplement better bone density fights osteoporosis

phytosterols phytomedicine plant sterols sterolins

resveratrol alpha lipoic acid anti-oxidant anti-aging

 

vitalyze vitamin B boost capsules

vuka 2000 male sexual supplement

CLASSIC RANGE OF VITAMINS
SPECIALTY FORMULAS ABOVE

vitamin c ascorbic acid

Nutritional information

zest for life vitamin supplements

Underneath we have information page on vitamins, minerals, amino acids, trace elements, enzymes and various nutritional compounds that can impact greatly on your general health, well-being and longevity.

Please note that these pages are for general information only and must not be used to treat or diagnose health concerns.

 
Fat soluble vitamins Trace elements
vitamin ABoron
Vitamin DChromium
Vitamin ECobalt
Vitamin KCopper
Fluorine
Water soluble vitaminsIodine
Vitamin C (Ascorbic acid)Iron
B Complex vitaminsManganese
Vitamin B1 (Thiamine, Thiamin)Molybdenum
Vitamin B2 (Riboflavin)Selenium
Vitamin B3 (Niacin, Niacinamide, Nicotinic Acid)Silicon (Silica)
Vitamin B5 (Pantothenic Acid)Zinc
Vitamin B6 (Pyridoxine)
Vitamin B9 (Folacin, Folic Acid)Enzymes
Vitamin B12 (Cyanocobamin, Cobalamin)Amylase
PABA (Para-AminoBenzoic Acid)Bromelain
CholineCoenzyme Q10
InositolLactase
Vitamin H (Biotin)Lipase
Protease
Amino AcidsMaltase
Alanine
ArginineMiscellaneous nutritional ingredients
AsparagineAdaptogens
Aspartic acidAlpha Lipoic Acid
Branched-Chain Amino AcidsAntioxidants
CarnitineApple Cider Vinegar
CitrullineAstaxanthin
CysteineCreatine
CystineFatty acids
GABA (Gamma-Aminobutyric Acid)Piperine (Pepper extract)
Glutamic acidResveratrol
GlutamineVitamin B13 (Orotic acid)
GlutathioneVitamin B15 (Pangamic Acid)
GlycineVitamin B17 (Laetrile, Amygdalin)
HistidineVitamin F (Fatty Acids)
HydroxyprolineVitamin P (Bioflavonoids)
IsoleucineVitamin T
LeucineVitamin U
Lysine
MethionineHerbal ingredients
NAC (n-Acetyl Cysteine)Echinacea
OrnithineGinger
PhenylalanineGinkgo Biloba
ProlineGinseng
SerineGoldenseal
TaurineGotu Kola (Centella)
ThreonineGrape Seed Extract
TryptophanGreen Tea
TyrosineLicorice
ValineMuira Puama
Olive Leaf Extract
MineralsPhytosterols
CalciumSt John's Wort
ChlorideTribulus Terrestris
Magnesium
PhosphorusWater
PotassiumCarbohydrates
SodiumProtein
SulfurCalories
 
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Cellumend anti-cellulite cream
Sanitoets home test kits and testing strips
Zest for Life vitamin supplements
Olinat pure natural facial moisturizing cream
Creme de Vie anti-wrinkle cream

 



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Our site was last updated on 5 April 2014.