Vitamin B12 (Methylcobalamin) is a prescription medication used to treat vitamin B12 deficiency. The brain and nerves need vitamin B12 to produce red blood cells. A Vitamin B12 deficiency can lead to anemia, stomach and intestine problems, and permanent nerve damage. People with cancer, HIV infection, poor nutrition, and stomach problems are more likely to have a Vitamin B12 deficiency. The active ingredient in Vitamin B12 is Methylcobalamin. Methylcobalamin belongs to a class of drugs called vitamins. It works by aiding the production of a substance called myelin to cover and protect nerve fibers.
Manufacturer Information
We currently offer the brand Vitamin B12 from Canada manufactured by Jamieson in the strength of 25 mcg/100 tab, 50 mcg/100 tab, 100 mcg/100 tab, and 250 mcg/100 tab. The drug is also available from Canada manufactured by Webber in the strength of 1000 mcg/60 tab sublingual tablets. We also offer Vitamin B12 from Canada manufactured by Swiss Herbal in the strength of 1000 mcg/60 tab. The generic Methylcobalamin is not available.
Get medical help immediately if you have any of these signs or an allergic reaction while using Vitamin B12. The most common side effects of Vitamin B12 may include the following:
• Appetite loss;
• Diarrhea;
• Headaches;
• Nausea;
• Vomiting
Contact your doctor right away if you have any of the severe side effects, including:
• Signs of an allergic reaction such as hives, difficulty breathing, swelling of the face, lips, or throat
These are not all of the side effects of Vitamin B12. Always contact your doctor if you notice any unusual symptoms.
You should not use Vitamin B12 if you are allergic to Methylcobalamin or any ingredient in Vitamin B12. Before you start using this medication, tell your doctor about your medical history, especially if you:
• Are breastfeeding or planning to breastfeed;
• Are pregnant or planning to be pregnant;
• Have an electrolyte imbalance
Tell your doctor about all your medications, including prescription, OTC, herbal supplements, and vitamins. There may be drug interactions between Vitamin B12 and other medicines, like metformin, omeprazole, Zantac, Prevacid, etc. Tell your doctor if you are pregnant or planning to become pregnant. It is not known whether Vitamin B12 will harm an unborn baby. However, a vitamin B12 deficiency in pregnancy may lead to anemia in pregnant women and low birth weight of the baby. Inform your doctor if you are breastfeeding or planning to breastfeed. Methylcobalamin passes into breast milk but should not affect a nursing infant. Use this medicine exactly as your doctor prescribes. Vitamin B12 is a tablet. Swallow the tablets whole, and do not crush or chew. If you are using a sublingual tablet, place it under your tongue and allow it to disintegrate. Avoid drinking large amounts of alcohol when using this drug. Heavy drinking may make it harder for your body to absorb Methylcobalamin. Store in the original container at room temperature, away from moisture and light. Keep out of the sight and reach of children.
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