references
  
      National Library of Medicine: "B Vitamins"
    
      National Institutes of Health Offices of Dietary Supplements: "Vitamin B12"
    
      ODS: "Riboflavin"
    
      Stanford Children's Health: "Vitamin B Complex "
    
      2020-2025 Dietary Guidelines for Americans
    
      ODS: "Iron"
    
      ODS: "Magnesium"
    
      Harvard T.H. Chan School of Public Health: "Zinc"
    
      ODS: "Zinc"
    
      Mount Sinai: "Coenzyme Q10"
    
      Cleveland Clinic: "What is ashwagandha?"
    
      Mayo Clinic: Vitamin B12 Supplements Recommended for Older Adults
    
      National Institutes of Health: Iron
    
      Mayo Clinic: Iron Deficiency
    
      Journal of Ayurveda and Integrative Medicine: Effects of eight-week supplementation of Ashwagandha on cardiorespiratory endurance in elite Indian cyclists
    
      BMJ: Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial
    
      Critical Reviews in Food Science and Nutrition: The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta‐analysis of randomized controlled trials
    
      Harvard Health Publishing: Autoimmune Disease and Fatigue
    
      Innovations in Clinical Neuroscience: Fatigue as a Residual Symptom of Depression
    




You can take certain vitamins for more energy, just make sure you actually need them by talking to your doctor first.

Image Credit: LaylaBird/iStock/GettyImages

Image Credit: LaylaBird/iStock/GettyImages

  • B Vitamins
  • Iron
  • Magnesium
  • Zinc
  • Vitamin D
  • Coenzyme Q10
  • Ashwagandha
  • Before You Buy
  • Other Factors

B1 (thiamine) 1.1 to 1.2 mg B2 (riboflavin) 1.1 to 1.3 mg B3 (niacin) 14 to 16 mg B5 (pantothenic acid) 5 mg B6 (pyridoxine) 1.3 to 1.5 mg B7 (biotin) 30 mcg B9 (folate) 400 mcg B12 2.4 mcg

Source: National Institutes of Health Office of Dietary Supplements (ODS)

Source: National Institutes of Health Office of Dietary Supplements (ODS)

Note: Vitamin B complex contains all eight of the B vitamins (and sometimes additional vitamins as well), per Stanford Children’s Health.

People who are pregnant or breastfeeding have different daily nutritional requirements and should speak with a doctor about how much vitamin B is right for them.

Take a look at more of the best iron supplements on the market.

Taking too much iron can cause stomach pain, nausea and vomiting. Be especially careful if you’re taking medications for Parkinson’s, restless leg syndrome or hypothyroidism, as too much iron can reduce their efficacy, according to the Mayo Clinic.

Check out more of the best magnesium supplements you can buy.

Take a look at some more of the best zinc supplements you can buy.

Check out some more of the best vitamin D supplements you can buy.

      National Library of Medicine: "B Vitamins"
    
      National Institutes of Health Offices of Dietary Supplements: "Vitamin B12"
    
      ODS: "Riboflavin"
    
      Stanford Children's Health: "Vitamin B Complex "
    
      2020-2025 Dietary Guidelines for Americans
    
      ODS: "Iron"
    
      ODS: "Magnesium"
    
      Harvard T.H. Chan School of Public Health: "Zinc"
    
      ODS: "Zinc"
    
      Mount Sinai: "Coenzyme Q10"
    
      Cleveland Clinic: "What is ashwagandha?"
    
      Mayo Clinic: Vitamin B12 Supplements Recommended for Older Adults
    
      National Institutes of Health: Iron
    
      Mayo Clinic: Iron Deficiency
    
      Journal of Ayurveda and Integrative Medicine: Effects of eight-week supplementation of Ashwagandha on cardiorespiratory endurance in elite Indian cyclists
    
      BMJ: Vitamin D and marine omega 3 fatty acid supplementation and incident autoimmune disease: VITAL randomized controlled trial
    
      Critical Reviews in Food Science and Nutrition: The effect of vitamin D supplementation on depressive symptoms in adults: A systematic review and meta‐analysis of randomized controlled trials
    
      Harvard Health Publishing: Autoimmune Disease and Fatigue
    
      Innovations in Clinical Neuroscience: Fatigue as a Residual Symptom of Depression