B Complex-Vitamin B12 is a vitamin combination used to supplement the diet. B Complex-Vitamin B12 may also be used for other conditions as determined by your doctor.
Side Effects of Vitamin b Complex
Many people think that there is no such thing as a vitamin B side effect since the B vitamins are excreted promptly through the urine. In large doses some B vitamins do have side effects. As with most medicines or supplements, the higher the dosage, the more likely overdose side effects would occur.. At high dosages B vitamins cause side effects such as nausea, diarrhea, various gastrointestinal symptoms, and vomiting. High dosages of vitamin B may also cause restlessness and insomnia. High doses of vitamin B 6 causes the side effect of peripheral neuropathy. Symptoms of vitamin B 6 toxicity include pain and numbness of the extremities, and in severe cases difficulty walking.
Consuming more than 400 mg/day of vitamin B 6, which is 200 times the RDA, can cause difficulty in walking, some neurological disorders and numbness in the mouth and hands. An overdose of vitamin B 3 , also known as niacin may result in the following symptoms: faintness, pounding in the head, diarrhea, jaundice and impairment of liver function, low levels of glucose tolerance, other skin lesions and abdominal cramps. Most of the effects are reduced on withdrawal of the vitamin. The recommended daily allowance is 1.4 mg for Vitamin B1, 1.6 mg for Vitamin B2, 2 mg for Vitamin B6 and 1 ug for vitamin B 12. If you want to get your intake from food sources then plants are not a good source of Vitamin B. Most of it is obtained from animal protein.
This medication may cause mild nausea or unpleasant taste. Consult your doctor if any of these effects persist or become severe. If you notice other effects not listed above, contact your doctor or pharmacist.
In large amounts, niacin commonly causes flushing and headache, although this can be avoided by taking it in the form of inositol hexaniacinate. Large doses of riboflavin result in very bright yellow urine.