The optimal dose of vitamin C
for an adult person 750-1000 mg per day, you need to break down this dose into 2-3 doses, since the consumption of vitamin C occurs instantly after its entry into the body, take care of an even intake of vitamin C during the day.B vitamins
can be taken effectively as injections. To do this, ask your general practitioner.Vitamin B12
deficiency is best restored by intravenous, intramuscular or subcutaneous injections also with the help of a therapist.
Unlike water-soluble vitamins, fat-soluble ones are deposited in human fat depots and are not easily excreted.
Called fat-soluble, these vitamins, like others (water-soluble) have no fat or other caloric components in their composition. At the same time, fat-soluble vitamins have a significant impact on the absorption of food, allowing the most complete absorption of dietary fats.
There is an opinion that taking large doses of some of them is dangerous because they can accumulate in concentrations that are toxic. This is the case for vitamin A and especially vitamin D.Vitamin A
ensures the normal functioning of the immune system, participates in bone formation, and is necessary for normal function and good condition of the skin, teeth, and hair.
The daily physiological requirement for vitamin A is 800-1500 mcg (2600-5000 IU).
An overdose develops when high doses of vitamin A, more than 300,000 IU (100,000 mcg), is characterized in the early stages by hair loss, dry skin, chapped lips, rashes, weakness, headache, or even enlargement of the liver and spleen.Vitamin D
regulates calcium and phosphorus metabolism in the body, stimulates growth and bone formation, and participates in the regulation of tissue respiration and redox processes.
It is important not to overdo vitamin supplements and to get tested before taking it in capsules.
How to do it?
- Get a 25-OH VITAMIN D
test in the lab
- Determine the standard of vitamin D in the blood serum. It is the same for men and women at any age:
less than 20 ng/ml - acute deficiency
21 to 29 ng/ml - deficiency
30 to 100 ng/ml - normal
over 100 ng/ml - excessive.
- For deficiency, calculate the dosage, e.g., here https://omegaquant.com/vitamin-d-calculator/
Symptoms of vitamin D overdose are caused by hypercalcemia. Anorexia, nausea and vomiting may develop, often accompanied by polyuria, polydipsia, weakness, nervousness, itching, and eventually, renal failure.