You wake up tired, struggle through the afternoon, and find yourself reaching for another cup of coffee. When low energy becomes a pattern, it is reasonable to wonder whether you are missing an important nutrient.
Certain vitamins and minerals help your body make red blood cells, support muscle function, and use energy from food. When you are deficient, replacing what is missing can help. The right choice depends on your diet, health history, medications, and the reason you feel tired.
Here are five vitamins and supplements that may deserve a closer look when fatigue persists.
1. Vitamin B12
Vitamin B12 helps maintain healthy nerves and red blood cells. A deficiency can cause fatigue, weakness, difficulty concentrating, and sometimes numbness or tingling.
You can get B12 from fish, meat, eggs, dairy, and fortified foods. However, eating these foods does not always guarantee adequate absorption. Digestive conditions, certain stomach surgeries, older age, and medications such as metformin or acid reducers can increase the risk of deficiency. People who eat a vegan diet also need a reliable source of B12.
If testing identifies a deficiency, oral supplementation or injections may be appropriate, depending on the cause. B12 is not a stimulant, and taking extra is unlikely to improve energy when you already have enough. Consumer
2. Vitamin D
Vitamin D is best known for bone health, but it also supports muscle and immune function. Low levels can be one piece of the picture when someone feels tired or physically depleted.
Your skin produces vitamin D in response to sunlight, and that production varies with the season, your age, and other factors. During the darker months in Idaho and Washington, it is helpful to consider how much you are getting from food and supplements. Food sources include fatty fish and fortified milk or plant-based beverages. Consumer
A randomized clinical trial found that vitamin D supplementation improved fatigue in otherwise healthy adults who were vitamin D deficient. That finding supports correcting a deficiency; it does not establish vitamin D as an energy treatment for everyone. A blood test can help guide an individualized plan. PubMed
3. Magnesium
Magnesium supports the body’s energy-producing processes, along with normal muscle and nerve function. Deficiency can cause fatigue and weakness, sometimes alongside muscle cramps or other symptoms.
Leafy greens, beans, nuts, seeds, and whole grains provide magnesium. Low intake over time, digestive conditions, and certain medications can affect magnesium status.
A supplement may be useful when intake is inadequate or there is another clinical reason to use one. The form and amount should fit your needs: some products cause diarrhea, and people with impaired kidney function need medical guidance before supplementing. Magnesium’s role in energy production does not mean that everyone who feels tired needs more. Consumer
4. Iron
Iron helps make hemoglobin, the protein in red blood cells that carries oxygen throughout your body. Iron deficiency anemia can leave you feeling exhausted, weak, or unusually short of breath with activity.
Heavy menstrual bleeding is an important reason to consider iron status. A complete blood count helps assess anemia, while ferritin helps evaluate stored iron. Iron stores can become depleted before anemia develops. Health Professional Fact Sheet
Research in menstruating women with low iron stores has found that iron supplementation can improve fatigue even when hemoglobin is still normal. However, iron should be taken for a demonstrated need, with follow-up to assess the response and attention to why levels became low. Excess iron can be harmful. pubmed.ncbi.nlm.nih.gov
5. Coenzyme Q10 (CoQ10)
CoQ10 is a compound your body makes naturally. It helps mitochondria—the energy-producing structures inside your cells—carry out the processes that generate usable energy.
Small clinical trials have reported improvements in some measures of fatigue with CoQ10 supplementation. The evidence is promising, but it does not establish CoQ10 as a dependable solution for everyone with low energy. It is an option to consider individually after reviewing the possible causes of fatigue. PMC
Medication review matters here, too. CoQ10 can interact with warfarin and insulin, so check with your clinician before adding it. NCCIH
Choosing Supplements for Your Needs
Persistent fatigue deserves a closer look at your sleep, nutrition, medications, and overall health. Depending on your symptoms and history, testing may include a blood count, ferritin, B12, vitamin D, or thyroid function. The goal is to identify what needs attention and choose treatment with a clear purpose.
Could Hormones Be Contributing to Your Fatigue?
Nutrient levels are one part of an energy assessment. An underactive thyroid can cause fatigue alongside feeling cold, dry skin, or changes in weight. During perimenopause and menopause, night sweats and sleep disruption can leave you exhausted the next day. In men, low testosterone can also be associated with reduced energy, especially when accompanied by changes in libido or muscle mass. Because these symptoms overlap with other conditions, your symptom pattern and health history matter alongside appropriate testing. NIDDK
At Full Spectrum Health & Wellness, Dr. Angiletta takes time to understand your symptoms and consider how nutrition, thyroid health, and hormonal changes may be affecting how you feel. Your care plan may include correcting a deficiency, treating a diagnosed thyroid condition, or considering hormone therapy when clinically appropriate, with benefits and risks reviewed individually. If fatigue is interfering with your daily life, schedule a consultation to explore personalized care through telemedicine in Idaho and Washington.
