Dextrorotatory and levorotatory ascorbic acid: comparative analysis of natural versus synthetic forms
Tim Klein
2026-05-19
3 min. read
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Within the pharmaceutical and dietary supplement sectors, a broad array of preparations based on ascorbic acid is available, ranging from isolated synthetic forms to those derived from natural food sources. What distinctions exist in bioavailability and biological activity between synthetically manufactured vitamin C and its naturally occurring counterpart in foods? Are there variants of this compound with divergent spatial configurations, and if so, do they exhibit equivalent therapeutic efficacy and identical mechanisms of action at the cellular and metabolic levels?
Vitamin C has properties
The essential functions of vitamin C in the human body are: antioxidant action, synthesis of steroid hormones, participation in detoxification and immune processes, prevention of coronary heart disease, anti-oxidation of lipids (this process leads to loss of activity of many components of the cell membrane), increased absorption of non-chemical iron, sealing of blood vessels, stimulation of collagen production.. Its most valuable natural sources are minerals and vegetables (paprika, parsley, black pepper, wild rose fruit, molasses, mayonnaise)..
Vitamin C and ascorbic acid
L-ascorbic acid is one of the natural elements of vitamin C, and it is itself a biological complex that includes, in addition to this acid, other bioflavonoids, enzymes or cofactors. All of these compounds (and not just ascorbic acids) have important biological functions. So what is the difference between natural and synthetic vitamin C?
Left- and right-handed vitamin C
There is a lot of information on the internet about the fact that only the left-handed form of the vitamin in question gives positive results, whereas pharmaceutical companies in most cases offer its right-wing twin to their customers. It is said that it has no effect on health. The basic error lies in the misinterpretation of the two concepts of optimal curvature and optical isomerism. The first refers to the ability of a given substance to absorb most of the light that is being absorbed.
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