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Pernicious Anemia
Without intrinsic factor, your body cannot absorb vitamin B12. Symptoms include:
Weakness
Pale skin
Diarrhea
Weight loss
Fever
Numbness or tingling sensation in the hands and feet
Loss of balance
Confusion, memory loss, and moodiness
Vitamin B12 supplements in high doses, either given as injections or orally, are prescribed to treat pernicious anemia. However, researchers do not know whether high homocysteine levels actually cause heart disease.
One small study suggested that some people who were not deficient in B12 might gain more energy from B12 shots. One preliminary study indicated that people with chronic fatigue syndrome might benefit from B12 injections. Breast cancer
Although there is no evidence that vitamin B12 alone reduces the risk of breast cancer, population studies have shown that women who get more folate in their diet have lower risk of breast cancer.
Another preliminary study suggested that postmenopausal women who had the lowest amounts of B12 in their diet had an increased risk for breast cancer. Male infertility
Studies suggest that vitamin B12 supplements may improve sperm counts and sperm’s ability to swim. More research is neede.
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Vitamin B12 deficiency produces clinical disorders that include mainly megaloblastic anaemia, peripheral and central neurological manifestations.
Side Effects
Ing the over-the-counter product to self-treat, follow all directions on the product package before taking this medication. If you have any questions, consult your pharmacist.
If your doctor has directed you to take this medication, take as directed by your doctor. Use this product regularly to get the most benefit from it. To help you remember, take it at the same time each day.
The dosage is based on your medical condition, response to treatment, and laboratory tests. Consult your doctor or pharmacist for more details. There are many brands and forms of cyanocobalamin (vitamin B12) available.
Read the dosing instructions carefully for each product because the amount of cyanocobalamin (vitamin B12) may be different between products. If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Doing so can release all of the drug at once, increasing the risk of side effects.
Also, do not split extended-release tablets unless they have a score line and your doctor or pharmacist tells you to do so. Avoid taking large doses of vitamin C within one hour before or after taking this product.
Why Do People Take Vitamin B-12?
Studies suggest that vitamin B-12 does not help with stroke risk or lung cancer.
Vitamin B-12 supplements do help people who have a deficiency. Low levels of vitamin B-12 are more likely in people over age 50. Low vitamin B-12 can cause fatigue, weakness, memory loss, and other problems with the nervous system.
There is some conflicting evidence about using vitamin B-12 to treat elevated levels of homocysteine in the blood. A high level of homocysteine in the blood is a risk factor for coronary, cerebral, and peripheral blood vessel disease. Risks also include blood clots, heart attacks, and certain types of stroke.
That’s a genetic condition that affects the body’s ability to break down certain proteins.