The Side Effects of B Vitamins
Introduction
Vitamin B is an important part of your daily diet. However, like all vitamins, vitamin B must be taken within the recommended dosage range for each type of the vitamin. Too much vitamin B can cause serious and can even lead to an overdose at extreme levels. In most cases, you will be unable to overdose on vitamin B from food intake alone. However, it is important to watch what multivitamins you take to ensure that their levels, mixed with the food you eat during the day, do not put you past an unhealthy dosage of vitamin B. All daily requirements listed in this article are based on the United States Recommended Daily Allowance (RDA).
Vitamin B1 and B2
Vitamin B1 (thiamine) side effects may include insomnia, high blood pressure, high heart rate and hypersensitivity. Vitamin B2 (riboflavin) side effects may include digestive problems such as vomiting or general nausea, low blood pressure and anemia. B1 is found in liver, nuts and some grains, and should be kept at an RDA of 1 mg per day. Vitamin B2 is found in dairy products and should be kept at an RDA of 2 mg per day.
Vitamin B3 and B5
Vitamin B3 (Niacin) side effects may include headaches, high blood pressure, high blood sugar, jaundice, joint pain, calcium loss and stomach issues such as vomiting and nausea. Vitamin B5 (calcium pantothenate) side effects may include protein metabolism deficiency, edema, high triglycerides, dehydration and fatigue. Vitamin B3 can be found in liver, fish and dairy products and has a recommended RDA of between 13 mg and 16 mg. Vitamin B5 can be found in most meat and poultry, as well as many forms of grain and has a RDA of 10 mg.
Vitamin B6 and B7
Vitamin B6 (pyridoxine) can have some of the most severe side effects, including numbness of the limbs, kidney stones, anemia, migraines and nerve degeneration. Vitamin B7 (biotin) side effects may include insulin deficiencies, skin rashes and an increase in blood sugar level. Vitamin B6 can be found in fruits, vegetables and fortified cereals and has an RDA of 1.3 mg to 1.7 mg. Vitamin B7 can be found in chocolate, yeast and beans and has an RDA of 300 mcg.
Vitamin B9 and B12
Vitamin B9 (folic acid) side effects may include an increase in cholesterol levels, kidney damage and anemia. Vitamin B12 side effects may include panic attacks, heart racing, optic nerve atrophy, rash and kidney disease. Too much vitamin B12 can also contribute to cancer growth and may even help cause certain types of leukemia. Vitamin B9 can be found in most fruits and green or starchy vegetables and has an RDA of 400 mcg. Vitamin B12 can be found in meats, eggs and dairy products and has an RDA of 2.4 mcg per day.
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