Vitamin A Dosage

The use of retinol in medical practice is widespread. After all, it takes part in almost all chemical processes of the body – it regulates growth and cell division, neutralizes free radicals, stimulates the immune system, is responsible for visual impulses of the brain, controls the metabolism, hormone production, cell and tissue regeneration. It is also included in the mandatory list of complex multivitamins, such as aevit, aerovit, dekamevit, complivit, etc.

In the human body, as a true vitamin, retinol comes from animal products. Dairy products – milk, butter, cream, cheese. Meat and fish by-products, eggs and caviar. Vitamin can be synthesized by the body from carotene – provitamin A, which is similar to it in function and structure, which is contained in plant foods. Carotene and other retinol compounds are found in small amounts in almost all vegetables, fruits, berries, and some herbs. Carotene is resistant to heat treatment, but evaporates during oxidation and is photosensitive, it is also not advisable to use iron and copper utensils for the preparation of products containing this vitamin.

The third, no less important way for retinol to enter the body is to use the finished drug – retinol acetate or retinol palmitate. The most common form of use is a solution of retinol acetate in oil and dragees, but the most effective is metered vitamin A capsules. Application capsules due to the fact that the active substance is contained in the shell, and is not in contact with oxygen. In our bodies, vitamin A is protected from oxidation by tocopherol (vitamin E). If the level of tocopherol is low, then the body cannot absorb enough vitamin A. In the same principle, retinol interacts with calciferol (vitamin D). A zinc deficiency can affect the inefficient delivery of vitamin A through the intestinal wall to the blood, the lack of retinol, in turn, complicates the absorption of zinc.

Vitamin A Dosage

Retinol – one of the best natural antioxidants, stimulates the redox processes of the body, increases metabolism and energy metabolism. Metabolic disorders, weight disorders, as well as diseases such as rickets and hyperkeratosis, prevent the use of vitamin A capsules. Application The drug also enhances protein synthesis in bone and cartilage tissue, which has a beneficial effect on the formation of bones and teeth.

Use of oil solution vitamin A capsules, use also other pharmacological forms of retinol, help in the development of immunity. It increases the body’s resistance to infections, regulates cell membrane biosynthesis, increases the level of antibodies and the activity of phagocytes. Vitamin A protects the body against viral respiratory diseases, bronchopulmonary diseases, erosive-ulcerative and inflammatory lesions of the gastrointestinal tract and urinary tract infections. Controls the synthesis of adrenal hormones and the production of somatotropic hormone, slows down the fluctuation of thyroid hormones and improves the function of the sebaceous and sweat glands. To maintain a constant blood sugar level in diabetes and hypoglycemia, you need to take vitamin A capsules. Application This drug is required for vitamin A deficiency.

Vitamin A Dosage

When A-avitaminosis in most cases, there is a weakening of spatial orientation in twilight, reduced color clarity and the total concentration of vision. Also, with a lack of vitamin A, there may be unreasonable migraines, general lethargy and fatigue, apathy and lack of appetite, which leads to exhaustion of the body. With a deficiency of retinol in the blood decreases the level of production of the hormone progesterone, as a result, infertility occurs in women.

It is also recommended as an adjunct in the treatment of eczema, ichthyosis, psoriasis, pyoderma vitamin A capsules. Application Retinol will bring positive dynamics in the treatment of various inflammatory and degenerative processes of the skin: injuries, burns and frostbite. Retinol is prescribed for lesions of the retina and optic nerve, for example, for hemeralopia of various degrees, impaired tearing, viral and bacterial conjunctivitis, eczematous eyelid lesions.

Preventive doses are set depending on the age, weight and daily needs of the body. Basically they are standard. For children – 0.5-1 mg, for adults – 1.5, for pregnant and lactating women – 2-2.5 mg.

Due to the high percentage of assimilation of the active substance, in very complex and neglected cases of the disease, prescribe vitamin A capsules. Application capsules gives a rapid effect and contributes to the concentration of the drug in the liver, retina, heart, lungs, adrenal cortex. That is why treatment with retinol should be carried out only under the supervision of a physician. Do not abuse and increase the prescribed dose. Prolonged uncontrolled use of significant doses of the drug causes side effects and hypervitaminosis.

The main symptoms of a vitamin overdose are: drowsiness and lethargy, migraine, nausea and vomiting, dizziness, bone pain, allergies and hypothermia. Vitamin C or thyroxin is used as an antidote. Side effects pass on their own, if you cancel reception in time. vitamin A capsules. Applications retinol with nephropathy, pyelonephritis, cholelithiasis and heart failure is not recommended.

Large doses of the drug should not be prescribed to pregnant women, especially in the first trimester, as there is a high risk of teratogenic effect, which persists 6-12 months after discontinuation. You also need to take into account some of the chemical characteristics of retinol in combination with other medicines. It is not recommended to drink estrogen-based hormonal contraceptives in conjunction with vitamin A capsules. Application can lead to A-hypervitaminosis due to increased absorption of vitamin A by the action of the hormone. With the use of large doses of retinol, long-term therapy with tetracycline antibiotics is undesirable – this increases the risk of a sharp increase in intracranial pressure.

Tatyana Nikolaeva Women’s magazine JustLady

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