QUESTION: Which vitamin overdose causes itching?
ANS:
- Vitamin B3, also known as niacin, in high doses, can cause a condition known as niacin flush.
- Symptoms can include
- Itching
- Redness
- Sensation of warmth on the skin
- High doses of niacin cause blood vessels to dilate, resulting in these symptoms.
- Normal dietary intake of niacin from foods is generally safe and does not cause itching or other adverse effects.
| Aspect | Information |
| Normal Dose | · For most adults, the recommended dietary allowance is 14-16 mg for men
· 12-14 mg for women |
| Side Effects of Overdose | · Excessive intake can cause a condition called niacin flush causing
· Redness of the skin · Itching, and a tingling sensation |
| Function
|
· Niacin is essential for the metabolism of carbohydrates, fats, and proteins, converting them into usable energy
· It plays a role in maintaining healthy skin, nervous system, and digestive system. · Niacin also helps in the synthesis of DNA and RNA, as well as the production of certain hormones and neurotransmitters. |
| Sources
|
· Meat
· Fish · Legumes · Whole grains · Seeds (sunflower seeds) · Nuts (peanuts and almonds) · Vegetables ( mushrooms and avocados) |