Vitamin A – a unique natural remedy to strengthen, rejuvenate and treat your body. The pharmacological industry produces oily solutions for internal and external use, coated tablets, pills, powders, and vitamin A capsules.
The use of retinol is widespread in medical practice. After all, it takes part in almost all chemical processes in the body – it regulates the growth and division of cells, neutralizes free radicals and stimulates the immune system, it is responsible for the visual impulses of the brain, it controls the operation of metabolism, hormone production, cell regeneration and tissue. And it is included in the mandatory list of complex multivitamin, such as Aevitum, Aerovit, Decamevit, Complivit and others.
Where is Vitamin A Contained?
In the human body, as a true vitamin, retinol is supplied with products of animal origin. This is dairy products, such as milk, butter, cream, cheese. Of course meat and fish by-products, eggs and caviar are included in the list. Vitamin A can be synthesized by the body from carotene – provitamin A, similar to it on the functions and structure, which is contained in plant foods. Carotene and other retinol compounds are contained in small amounts in almost all vegetables, fruits, berries and some herbs. Carotene is resistant to heat treatment, but it evaporates during oxidation and it is light sensitive, also it is not desirable to use iron and copper utensils for cooking foods containing this vitamin.
Third, no less important than the way of receiving retinol in the body is the use of the finished drug – retinol acetate or retinol palmitate. One of the most common forms of use is a solution of retinol acetate in oil and drops, but the dosage of vitamin A capsules are the most effective. The use of capsules is due to the fact that the active substance is contained in the envelope, and it does not contact with oxygen. In our bodies, vitamin A is protected against oxidation with thetocopherol (vitamin E). If the level of thetocopherol is low, the body can not absorb enough of the vitamin A.The same principle the retinol interacts with the calciferol (vitamin D). A deficiency of zinc may result in inefficient delivery of vitamin A through the intestinal wall into the bloodstream, the deficiencyof the retinol, in turn, complicates the assimilation of zinc.
Functions of Vitamin A
Retinol is the one of the best natural antioxidants; it stimulates the oxidation-reduction process of the body, increases metabolism and energy metabolism. Metabolic disturbances, disorders of body weight, as well as diseases such as rickets and hyperkeratosis are prevented with the use of vitamin A capsules. Use of the drug also increases protein synthesis in bone and cartilage tissue, it has beneficial effects on process of formation of bones and teeth.
The application of the oil solution of vitamin A capsules, the use of well as otherpharmacological forms of retinol, help in the development of immunity. It increases the body’s resistance to infections, regulates the biosynthesis of cell membranes, and increases the level of antibodies and the activity of phagocytes. Vitamin A protects the body against viral respiratory diseases, bronchopulmonary diseases, erosive and ulcerative and inflammatory lesions of the gastrointestinal tract and urinary tract infections. It controls the synthesis of adrenal hormones and the production of growth hormone, slows down wobble of thyroid hormones and establishes the function of sebaceous and sweat glands. To maintain a constant level of blood sugar in diabetes and hypoglycemia it is necessary take vitamin A capsule. The use of the given preparation is required in the event of a deficit of vitamin A.
The weakening of spatial orientation in the twilight, the color clarity and the total concentration of view is reduced, all this happens in most cases of A-avitaminosis. Also, a patient with a lack of vitamin A can complain about unreasonable migraine, general lethargy and tiredness, lethargy and lack of appetite what could lead to depletion of the body. If there is a deficiency of retinol in blood, the hormone production level of progesterone is decreased, resulting in the possibility of women’s infertility.
Vitamin A capsules are recommended for the treatment of eczema, ichthyosis, psoriasis, pyoderma as an adjunct. Application of retinol will bring a positive dynamics in the treatment of various inflammatory and degenerative processes of the skin: injuries, burns and frostbite. Retinol is assigned in lesions of the retina and optic nerve, such as night blindness different degrees lacrimation disorders, viral and bacterial conjunctivitis, eczematous lesions of the eyelids.
Preventive doses are established depending on age, weight and daily needs of the body. Basically they are standard. For children it is – 0.5-1 mg for adults it is – 1.5, for pregnant and lactating women it is – 2-2.5 mg.
Vitamin A capsulesis prescribed due to the high percentage of assimilation of the active substance in a very complex and neglected cases of the diseases. The use of capsules gives rapid effect and contributes to the concentration of the drug in the liver, retina of the eye, heart, lung, adrenal cortex. That is why retinol treatment should be done only under medical supervision, and do not abuse by increasing the prescribed dose. Prolonged uncontrolled use of large doses of the drug causes side effects and gipervitaminoz.
The main symptoms of vitamin overdose are: drowsiness and lethargy, headache, nausea and vomiting, dizziness, bone pain, allergies, and hypothermia. In such vitamin C or thyroxinecases is applied as an antidote. The side effects are themselves, if vitamin A capsules are cancelled in time. It is not highly recommended the use of retinol nephropathy, pyelonephritis, cholecystitis and heart failure
Retinol for pregnant women
There should be appointed high doses to pregnant women, especially in the first trimester, as there is a high risk of teratogenic effects, which remains 6-12 months after you stop taking. It should also be taken into account some of the chemical characteristics of retinol in combination with other medicines. It is not recommended to drink hormonal contraceptives estrogen-based, together with vitamin A capsule. The application can lead to hypervitaminosis A by increasing the absorption of vitamin A by the action of a hormone. Against the background of the use of high doses of retinol it is undesirable long-term treatment with antibiotics of the tetracycline group – it increases the risk of a sharp rise in intracranial pressure.