Vitamin supplements, natural or synthetic

 
What is a vitamin supplement?
A vitamin supplement is a tablet or capsule that is naturally extracted or synthesized to ensure the daily intake of adequate vitamins in special groups. Special groups include: People with irregular diet and a single type of food that causes insufficient vitamin intake, and people with vitamin deficiency diagnosed.
 
Classification of vitamin supplements
Natural Vitamin supplements: health care products made from natural food, including physical or chemical processes such as extraction and concentration. Synthetic Vitamin supplements: Vitamins with the same composition are synthesized manually from chemical raw materials based on the chemical structure of vitamins.
 
Comparison of natural supplements and synthetic supplements
From the perspective of price: it can be found that the same as vitamin C, some brands are more than 80 yuan, and some are imported up to hundreds. The synthetic vitamin tablets only cost a few dollars. So what causes the price disparity between the two? The purchase, selection, low extraction rate, and complicated extraction process of raw materials all result in high costs of natural vitamins, while vitamin synthesis can be produced at a low cost and at a large scale.
From the perspective of absorption rate: Different Types of vitamins have different synthetic and natural absorption rates. Taking folic acid as an example, the human body can only absorb about 10% of the folic acid from the liver of the ox, while the absorption rate of the synthetic folic acid can be doubled. However, Vitamin E is the opposite. Studies show that the absorption rate of Natural Vitamin E is 3.5 times that of Synthetic Vitamin E.
From the perspective of Stability: The synthetic vitamins are generally added with antioxidant substances, which have stable properties and long shelf life. However, the natural extraction is easier to be oxidized and decomposed, with a short storage period and strict storage conditions.
From the perspective of purity: because of the obstacles of other components in the raw materials and the restrictions of the extraction process, the purity of natural extraction is lower than the purity of chemical synthesis.
From a safety perspective: whether it is natural extraction or chemical synthesis, taking too much is harmful. In particular, fat-soluble vitamins (va, Vd, VE, and VK), once they exceed the maximum tolerable intake recommended by the Chinese Nutrition Society, they may cause potential harm, even poisoning, and centrifugal vacuum pump.