Deficiencies in cobalamin (vitamin B12) can result in diminished energy and exercise tolerance, together with fatigue and shortness of breath. These hematologic symptoms regress and disappear with supplementation with vitamin B12, for which doses and routes will depend on the cause and severity of deficiency [109].
Vitamin B12 is often used to improve cognitive function, depressive symptoms, and fatigue.
Vitamin B12 is essential for the production of red blood cells and DNA. It is also essential for the functioning of the nervous system. When your body does not receive enough vitamin B12 you may feel fatigued and tired all the time. It can also lead to weakness.
It may take a few weeks before your vitamin B12 levels and symptoms (such as extreme tiredness or lack of energy) start to improve. If you have hydroxocobalamin injections to boost your vitamin B12 levels at the start of treatment, the cyanocobalamin tablets may start to work within a few days.
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.
Possible culprit: A vitamin or mineral deficiency
One possible reason for feeling tired, anxious, and weak is having low levels of iron, vitamin D, or B12. Many experts believe that a significant percentage of the U.S. population is deficient in vitamin D.
Symptoms of vitamin B12 or folate deficiency anaemia
Anaemia is where you have fewer red blood cells than normal or you have an abnormally low amount of a substance called haemoglobin in each red blood cell. General symptoms of anaemia may include: extreme tiredness (fatigue) lack of energy (lethargy)
Vitamin B is recommended as one of the top vitamins to help with tiredness, so you can also opt for a supplement if you're struggling to stay topped up through your diet. Vitamins should be used alongside a balanced diet.
High doses of vitamin B-12, such as those used to treat a deficiency, might cause: Headache. Nausea and vomiting. Diarrhea.
Thus if you're otherwise healthy but still continue to feel tired after taking a B-12 supplement, it could be a sign of a mild allergic reaction. If a rash, difficulty breathing or swelling coincides with taking your dose of B-12, get to the doctor right away.
People who are concerned about their low level of energy should be advised that unless they already suffer from a vitamin B12 deficiency, there is no strong evidence to support the notion that taking large doses of vitamin B12 will increase their energy levels.
B Vitamins For Brain Fog
Sufficient levels of vitamin B12 are necessary to optimize nerve function, memory, and quick thinking. If you don't eat adequate amounts of shellfish, poultry, and dairy products, vitamin B12 supplements can help improve cognitive decline, poor memory, as well as muddled thinking.
Many cases of tiredness are due to stress, not enough sleep, poor diet and other lifestyle factors. Try these self-help tips to restore your energy levels. If you feel you're suffering from fatigue, which is an overwhelming tiredness that isn't relieved by rest and sleep, you may have an underlying medical condition.
Why am I waking up tired? You're most likely waking up tired because of sleep inertia, the natural grogginess you get when you transition from being asleep to awake. It can take 15 minutes to two hours for sleep inertia to dissipate. Coffee, exercise, and morning light exposure can help wake you up faster.
Diet. Some people can develop a vitamin B12 deficiency as a result of not getting enough vitamin B12 from their diet. A diet that includes meat, fish and dairy products usually provides enough vitamin B12, but people who do not regularly eat these foods can become deficient.
Vitamin B12 deficiency can indeed lead to weight gain. But the weight gain is not a direct result of the deficiency. Instead, vitamin B12 deficiency causes lethargy or lack of energy, and in turn, inactivity causes weight gain.
You should be able to get all the vitamin B12 you need by eating a varied and balanced diet. If you take vitamin B12 supplements, do not take too much as this could be harmful. Taking 2mg or less a day of vitamin B12 in supplements is unlikely to cause any harm.
If you have any of the following health problems, consult your doctor or pharmacist before using this medication: a certain eye disease (Leber's optic neuropathy), a certain blood disorder (polycythemia vera), gout, iron or folic acid deficiency anemia, low potassium blood levels (hypokalemia).
Interactions between your drugs. No interactions were found between Vitamin B12 and Vitamin D3. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.