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Multivitamins contain multiple micro-nutrients, such as vitamins and dietary minerals. A multivitamin is a preparation intended to serve as a dietary supplement with vitamins, dietary minerals, and other nutritional elements. Such preparations are available in the form of tablets, capsules, pastilles, powders, liquids, or injectable formulations.
However, in rare cases, excessive B12 intake from supplements may cause unwanted side effects. Some studies suggest high B12 doses might impact kidney function or interact with certain medications.
Multivitamins divorced from foods became a commercial product in the 1940s, and Americans now spend $8 billion per year on the supplements. There are some cases where vitamin pills can be helpful ...
Excessive consumption of vitamins. Hypervitaminosis is a condition of abnormally high storage levels of vitamins, which can lead to various symptoms as over excitement, irritability, or even toxicity. Specific medical names of the different conditions are derived from the given vitamin involved: an excess of vitamin A, for example, is called ...
Taking supplements with more than 25 mg of iron can lead to stomach issues such as constipation, nausea, pain, vomiting, and diarrhea. Excess iron can also reduce the absorption of the mineral ...
Because water-soluble B vitamins are eliminated in the urine, taking large doses of certain B vitamins usually only produces transient side effects (only exception is pyridoxine). General side effects may include restlessness, nausea and insomnia. These side effects are almost always caused by dietary supplements and not foodstuffs.
In a large study involving nearly 400,000 US adults without a history of chronic diseases over a follow-up period of more than 20 years, those taking a daily multivitamin showed no improvement in ...
Side effects from vitamin overdoses may occur, especially in patients with kidney failure. In very large doses, vitamin C in kidney-failure patients can cause severe side effects such as oxalate deposits in bone and soft tissues and may interfere with the absorption and metabolism of vitamin B 12. The product contains 1 g of vitamin C per ...
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