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Why would B12 make you tired?
Weakness and fatigue are common symptoms of vitamin B12 deficiency. They occur because your body doesn’t have enough vitamin B12 to make red blood cells, which transport oxygen throughout your body. As a result, you are unable to efficiently transport oxygen to your body’s cells, making you feel tired and weak.
Can Vitamin B12 deficiency cause fatigue?
Megaloblastic anemia due to vitamin B-12 deficiency may lead to a person feeling fatigued. Without enough red blood cells to carry oxygen around their body, a person can feel extremely tired.
Can too much vitamin B make you tired?
Too much nicotinic acid can also cause low blood pressure, fatigue, headaches, rashes, and liver damage. Excess nicotinamide. High doses of nicotinamide, another form of vitamin B-3, can cause diarrhea and increased bleeding. This can occur in doses of 500 mg per day.
Can vitamin B-12 deficiency cause fatigue?
Even if you’re taking B-12 on a regular basis, your body might not be able to absorb it, resulting in a deficiency that could be causing your fatigue. Vitamin B-12 in supplements generally absorbs efficiently after binding with a specialized protein called intrinsic factor.
How do you know if you have a vitamin B12 deficiency?
You’re Tired: Fatigue is one of the first signs of a B12 deficiency. Since B12 helps make red blood cells, a dip in production will mean less oxygen to keep your cells going. You Feel Weak: If you can barely get up the stairs or lift your groceries, your muscles may not be getting enough oxygen.
How do you know if you need a B12 boost?
If you’re feeling sluggish, check out our signs you may need a B12 boost: You’re Tired: Fatigue is one of the first signs of a B12 deficiency. Since B12 helps make red blood cells, a dip in production will mean less oxygen to keep your cells going.
What are the side effects of too much vitamin B-12?
If a rash, difficulty breathing or swelling coincides with taking your dose of B-12, get to the doctor right away. These are more serious allergic reaction symptoms that could lead to anaphylactic shock.