Dosage Since only a part of vitamin D is absorbed through food and the other part is formed on the skin itself through the sun’s rays, it is difficult to determine a guide value for a daily dose. The amount of vitamin D produced by the body itself depends on many factors, such as skin … Dosage | Vitamin D
Symptoms of deficiency The daily requirement of vitamin D is taken up on the one hand via food, but on the other hand it is produced by the body itself. In order for the body to be able to produce vitamin D, however, it needs the sun’s rays on the skin. Even with a balanced … Symptoms of deficiency | Vitamin D
english: vitamina a acidoverview vitamins Occurrence and structure of vitamin A Beta-carotene, the precursor of vitamin A, can be split into two molecules retinal, which consist of four isoprene units and a simple ring system. Vitamin A is supplied via food and is particularly contained in animal food sources. Liver contains a particularly large amount … Vitamin A – Retinol
Vitamin A-containing agents against acne Vitamin containing drugs are very effective drugs for the treatment of acne. Through a therapy that usually lasts for several months, the sebaceous glands of the skin are severely restricted in their function. The skin is less oily and fewer and fewer pimples form over time. Due to the possible … Vitamin A-containing agents against acne | Vitamin A – Retinol
Eye drops containing vitamin A In case of dry eyes, relief can be achieved with eye drops containing vitamin A on doctor’s orders. Depending on the severity of the symptoms, one drop is given into the eye 3 times a day up to once an hour. The drops contain a small amount of the vitamin, … Eye drops containing vitamin A | Vitamin A – Retinol
to overview Vitamins Occurrence and structure Niacin is mainly found in fish and coffee beans. It is interesting that a modified form of niacin can be produced from the essential amino acid tryptophan (essential means that the body cannot produce it itself and must therefore absorb it with food), but in too small amounts, so … Vitamin B3 – Niacin
to overview Vitamins Occurrence and structure Citrus fruits, broccoli, Brussels sprouts and potatoes have a high vitamin C content. However, only if they have not been heated too much, as ascorbic acid is sensitive to heat. Almost all animals can produce vitamin C themselves, but humans – among other primates – cannot. Characteristic for its … Vitamin C – Ascorbic acid
