There are daily doses of vitamins and minerals recommended by the WHO. If you suffer from chronic diseases and was a physician before taking supplements and vitamins, you should consult a physician.
Calcium - RDA (daily rate) - 700 mg, taking it more PD (limit dose), which is 1500 mg, can aggravate kidney disease. In old age, calcium intake is best combined with vitamin D preparations of bone meal and dolomite should be avoided because they are contaminated with heavy metal salts.
-200 Mcg folic acid RDA, PD - 1, 5 mg, and for pregnant women - 100mcg that consuming this supplement, prevent birth defects of the fetus.
Iron - 8-14 mg PCH, it decreases with age and PD - 17 mg. Norma more than 20 mg toxic to children and adults with a blood disease, only after consulting your doctor.
Magnesium - 270 mg PCH, PD - 400 mg. Who has heart disease and kidney failure, without the recommendation of the attending physician should not be accepted.
Selenium - 60 mcg RDA, PD - 0 45 mg. In case of overdose side effects - a nausea, dizziness, and sometimes loss of hair and nails, you may receive the smell of garlic breath.
Vitamin A - 600 mcg RDA, PD - 1500 mcg. Overdose contributes to impairment of vision, nausea, hair loss, harms the liver and bones.
Vitamin V¬1 - 1 mg PCH, PD - 10 mg. Excessive doses provoke cardiac arrhythmia, insomnia, irritability and headaches.
Vitamin V¬2 - 1 mg PCH AP - 4 mg. Excessive doses provoke cardiac arrhythmia, insomnia, irritability and headaches.
Vitamin V¬3 - 12-13 mg PCH, it decreases with age and PD - 17 mg. Large doses cause abnormal liver function.
Vitamin V¬6 - 1 mg 2 PCH PD - 10 mg. If PD more, damaged peripheral nerves.
Vitamin V¬12 - 1, 5 ug PCH PD - 2 mg. These vitamins are recommended for vegetarian diet. In high doses, impairs the function of the kidneys and liver.
Vitamin C - 40 mg PCH, DP - 1000 mg. Excessive doses cause diarrhea, allergic reactions.
Vitamin D - 0, 01 mg PCH, DP - 0, 025 mg. Excessive doses provoke loss of appetite, diarrhea, fatigue, irritability and headaches.
Vitamin E - 3 mg PCH, DP - 540 mg. People with underlying diseases of the blood is not recommended because it contributes to liquefaction of the blood.
When choosing a vitamin B complex, it is imperative to check the label of ingredients and compare them with the allowed daily norm, which are listed above. It will inspire confidence in the safety of the selected set.