What is Vitamin A?
Vitamin A is a fat soluble vitamin. Unlike water soluble vitamins that need to be taken daily, fat soluble vitamins are stored in the liver, previously absorbed from dietary fats in the intestine, and do not need to be consumed daily. Vitamin A is also known as retinol because it produces the pigments in the retina of the eye.
Vitamin A (retinol acetate) is also known as retinyl acetate, retinal acetate and vitamin A acetate.
Vitamin A and Metabolic Functions
Within the body vitamin A plays vital roles including,
• vision - enhances vision in low light
• immune function - strengthens immunity against infections
• skin and cellular health - skin and mucous linings including the nose
Within the body, retinol can be converted to active forms of vitamin A which include retinol and retinoic acid. Precursors to vitamin A are carotenoids and are converted to vitamin A inside the body.
Dietary Sources of Vitamin A
Vitamin A can be found in the following food sources: liver, cheese, eggs, oily fish, milk and yogurt.
Vitamin A (mg & iu)
Commonly vitamin A is measured in International Units (abbreviated to iu) which is a measurement of its biological activity. UK law requires us to state the measurement unit as micro-grams of retinol. One International Unit is equal to 0.3µg of retinol. Thus 25,000 iu = 7,500 µg RE.
Health Leads Purity Promise
Our mission is to supply the best available ingredients and make vitamin supplements without harmful additives. That is why we manufacture in our state of the art Clean Room here in the UK. We have full control of what goes into our supplements. All of our vitamins are without magnesium stearate and other harmful additives. Find out more on our about us page.
Most orders are sent by either 1st class Royal Mail or if requested by DPD.
We aim to dispatch orders received before 2pm (UK time) on the same day, excluding weekends and national holidays.
Next day delivery applies to working days only, guaranteed if a courier is selected and the order is received before 2pm.
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