Vitamin Overdose and Toxicity Overdose of certain vitamins may causes some side effects. Therefore, the supplementation of vitamins should be safely dosed with the guides of a reliable medical instruction. Excessive intake of vitamin A can be harmful to bones and skin, causing weakness and brittleness. Large doses of niacin can cause liver damage, peptic ulcers, and skin rashes. Vitamin B6 toxicity can damage sensory nerves. High doses of PABA can cause blood sugar to drop. There is a high health risk associated with consuming too much vitamin D.
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Informational note: The data presented on our health and nutrition website is for educational purposes only. Though we stive to be accurate in all of the information we present, it should not be taken as medical advice. NSC always recommends consulting your physician before beginning or modifying any diet or exercise program.
