Lifestyle changes
Notice how sleep, meals, activity, and workload affect your energy. Keep a regular wake time and balance demanding days with opportunities to recover.
Energy
Having enough energy means being able to meet the mental and physical demands of your day without feeling constantly depleted. It includes the stamina for activity, the alertness to stay engaged, and enough capacity left for the things you enjoy. Energy support becomes more useful when it reflects the pattern you actually experience. The body relies on connected processes to provide that capacity. Nutrients are converted into usable cellular energy, oxygen is delivered to working tissues, and the nervous system helps regulate wakefulness and attention. Different ingredients focus on different parts of this picture, from nutritional coverage to short-term alertness or resilience during demanding periods. These priorities can change with your routine. Someone who struggles through the afternoon may be looking for something different from a person preparing for prolonged physical activity. Following when your energy rises and falls helps you define the support you need and recognize progress through more consistent everyday function.
Warnings
- Count all stimulants: Count caffeine from drinks and supplements together. Review intake if you notice jitteriness, palpitations, anxiety, or disrupted sleep.
- Use iron for a clear need: Use an appropriate assessment to guide iron supplementation. Tiredness or hair changes can have several causes, and excess iron can be harmful.
- Review thyroid-related products: Review iodine, selenium, and thyroid-focused blends alongside any thyroid condition or treatment. Keep total intake balanced and use clinical assessment to understand persistent symptoms.
- Check medicine interactions: Ask a pharmacist or clinician to review your exact products alongside your medicines. The ingredient, amount, and treatment determine which combinations are suitable.
Ingredient overview
Goal guidance
Diet changes
Eat regularly, including carbohydrate and protein sources that fit your activity level. Keep convenient meals and drinks available so that busy periods do not turn into long gaps without food or fluid.
Who this is for
Adults seeking more consistent daytime energy, better stamina, or extra support during mentally and physically demanding periods.
Who should be careful
Review stimulants if you have palpitations, anxiety, sleep difficulties, or cardiovascular conditions. Persistent or unexplained fatigue needs assessment, and iron or iodine should be chosen for an identified need.
Expected timeline
Alertness ingredients can be noticeable on the day you take them. Nutritional support and better recovery work more gradually, so follow your energy patterns over time.
Common mistakes
Relying on stimulants while skipping meals or cutting sleep can make energy harder to sustain. Track when you feel tired and choose support that addresses that pattern.
Ingredients
Iodine Minerals
Impact
Highest effect
Typical dose150–300 mcg / day
The thyroid gland cannot produce T3 and T4 hormones without adequate iodine. These hormones control the speed of cellular processes throughout the body. An iodine deficiency can lead to hypothyroidism, a condition whose primary symptoms include severe fatigue, weight gain, and low energy.
- Focuses on
- Most relevant for
- Individuals looking to support metabolic function through essential thyroid hormone production.
Potential benefits
- Thyroid Hormone Synthesis.Unconfirmed. Iodine is a necessary component for the production of thyroid hormones that regulate the body's metabolic rate, though direct evidence for energy improvement from supplementation is unproven.
Limitations
- No Direct Energy Evidence.Supplied research focuses on radioactive iodine for cancer treatment, which was associated with increased fatigue rather than energy gains from dietary iodine.
- Clinical Population Constraint.The findings regarding fatigue and energy loss are specific to thyroid cancer survivors and cannot be generalized to the use of iodine supplements by the general public.
Study evidence
3 studiesThe supplied evidence does not establish that Iodine supplements improve energy. It concerns radioactive iodine treatment after thyroid cancer surgery, where lower energy or greater fatigue was observed; those findings cannot be applied to ordinary dietary iodine or oral supplements.
Iron Minerals
Impact
Highest effect
Typical dose18–45 mg / day
Iron is a critical component of hemoglobin in red blood cells. Without sufficient iron, the body cannot produce enough healthy red blood cells to carry oxygen effectively, leading directly to feelings of exhaustion, weakness, and shortness of breath. This is particularly crucial for women of childbearing age, vegetarians, and athletes.
- Focuses on
- Most relevant for
- People with confirmed iron deficiency or anemia, including menstruating women and those with restricted diets.
Potential benefits
- Reduces Deficiency-Linked Fatigue.Iron helps alleviate tiredness and increases vitality when fatigue is caused by low iron stores or anemia.
- Improves Exercise Performance.Supplementation supports physical capacity by ensuring muscles receive enough oxygen during both light and intense activity.
- Supports Maternal Energy.Helps maintain energy and physical function during pregnancy or after childbirth by correcting blood loss-related depletion.
Limitations
- No Boost for Sufficient Levels.Research suggests iron does not improve energy in people who already have adequate iron stores or non-deficiency-related fatigue.
- Inconsistent Non-Anemic Impact.The effect on fatigue is less certain for those with low iron but normal hemoglobin, such as some blood donors.
- Risk of Phosphate Depletion.Certain clinical intravenous forms can lower phosphate levels, which may temporarily cause muscle weakness rather than improve energy.
Things to consider
Oral iron commonly causes digestive discomfort like constipation or nausea. Always confirm deficiency with a healthcare provider via blood testing before starting, as excess iron can be harmful.
Study evidence
74 studiesIron can reduce fatigue when it corrects iron deficiency, including in some people without anemia. Benefits are not universal, and the available research does not establish an energy boost in people with adequate iron; findings from intravenous treatment also differ from ordinary oral supplementation.
Magnesium Minerals
Impact
Highest effect
Typical dose200–400 mg / day
Magnesium is required for glycolysis, the Krebs cycle, and oxidative phosphorylation—the core processes of cellular energy production. It also plays a role in nerve function and muscle contraction. Inadequate magnesium levels can impair energy metabolism and lead to feelings of exhaustion.
- Focuses on
- Most relevant for
- Individuals experiencing fatigue related to magnesium deficiency, poor sleep quality, or specific health conditions affecting energy.
Potential benefits
- Daytime Alertness and Productivity.Specific forms of magnesium may improve subjective energy levels and mental alertness during the day for those experiencing sleep-related difficulties.
- Fatigue Management in Deficiency.Restoring magnesium levels in individuals with low status or chronic fatigue may significantly improve wellbeing and perceived energy levels.
- Metabolic Energy Support.Unconfirmed. Provides a necessary cofactor for ATP production, supporting the core cellular processes required for physical stamina and muscle function.
Limitations
- Magnesium Status Dependency.Energy benefits are primarily observed in those with existing magnesium deficiencies or health challenges; supplemental energy boosts in healthy, sufficient individuals are not well-established.
- Indirect Energy Effects.Improvements in vitality may be a secondary result of better sleep or mood rather than a direct stimulant-like effect on the body.
- Clinical Translation.Some evidence for fatigue reduction involves medical administration methods, such as intramuscular injections, which may not apply to standard oral supplementation.
Things to consider
Strenuous exercise and inadequate dietary intake can deplete magnesium, which may impair energy metabolism and physical work capacity.
Study evidence
4 studiesMagnesium may help with energy-related symptoms in some health or sleep-related contexts, but a general energizing effect is not established. It remains unclear whether supplementation improves everyday vitality in healthy people with adequate magnesium status.
Riboflavin Vitamins
Impact
Highest effect
Typical dose1.3–100 mg / day
As a precursor to FAD and FMN, Riboflavin (B2) is an essential cofactor in the electron transport chain, the body's primary engine for ATP generation. A deficiency can directly impair energy metabolism and lead to fatigue.
- Focuses on
- Most relevant for
- People with physically active lifestyles or those looking to support their body's natural metabolic energy pathways.
Potential benefits
- Metabolic Energy Pathway Support.Unconfirmed. As a precursor to essential cofactors, riboflavin is involved in the biological processes that convert nutrients into ATP, though supplemental benefits for non-deficient individuals are unproven.
- Reduction in Physical Fatigue.Unconfirmed. Limited evidence suggests that riboflavin-fortified intake may help improve subjective fatigue scores in individuals with high physical work demands.
- Support for Physical Endurance.Unconfirmed. When included in a B-vitamin complex, riboflavin is associated with improved exercise performance and more efficient management of fatigue-related metabolites like lactate.
Limitations
- Lack of Isolated Evidence.Most research showing fatigue reduction uses riboflavin as part of a multi-vitamin complex or fortified food, making its independent impact unclear.
- Population Specificity.Supportive findings are often based on specific groups, such as construction workers or those with metabolic disorders, and may not apply to the general population.
- Clinical vs. Everyday Energy.While effective for treating specific inherited metabolic energy deficiencies, there is no established proof that it boosts energy in healthy adults.
Study evidence
6 studiesRiboflavin helps the body’s energy metabolism, but the supplied evidence does not establish that taking it alone reliably increases everyday energy. Limited fatigue findings come from a fortified drink, vitamin combinations and clinical conditions that may not apply to otherwise healthy people.
Thiamin Vitamins
Impact
Highest effect
Typical dose1.2–100 mg / day
Thiamin (B1) is an essential coenzyme for several key enzymes in the citric acid cycle, which is central to cellular respiration and energy production. Deficiency, though rare in developed countries, leads to severe energy impairment.
- Focuses on
- Most relevant for
- Individuals with marginal thiamin intake or specific health conditions that impair the body's ability to process energy.
Potential benefits
- Metabolic Energy Release.Directly supports the enzymatic reactions required to transform dietary carbohydrates into cellular fuel.
- Correction of Fatigue.Restores energy and reduces fatigue in those with low status, notably observed in elderly populations with marginal deficiency.
- Post-Exercise Recovery.Unconfirmed. Limited studies suggest potential for reducing subjective fatigue and lactate after exertion, though a general energy boost is unproven (unconfirmed=true).
Limitations
- Status Dependency.Energy-related benefits are primarily seen in those correcting a deficiency; there is no evidence it boosts energy in well-nourished individuals.
- Mixed Clinical Results.While helpful for fatigue in some inflammatory conditions, trials for other chronic conditions showed no benefit over placebo.
- Dose Maintenance.Initial fatigue reduction seen with high doses may not be sustained by moving to standard daily maintenance doses.
Things to consider
Chronic liver issues, critical illness, or chewing difficulties in the elderly can increase the risk of deficiency and associated energy impairment.
Study evidence
12 studiesThiamin is essential for cellular energy production, and supplementation can reduce fatigue when nutritional status is low. Selected clinical and exercise studies also suggest benefits, but results vary and do not establish a general energy boost for people with adequate thiamin.
Vitamin B12 Vitamins
Impact
Highest effect
Typical dose250–2000 mcg / day
Vitamin B12 is a necessary cofactor for the metabolism of every cell in the human body, especially affecting DNA synthesis and energy production. It helps convert fats and proteins into energy and is vital for maintaining healthy nerve cells. Deficiencies are common in older adults and those on plant-based diets.
- Focuses on
- Most relevant for
- Individuals with low B12 levels, such as older adults or those on strict plant-based diets, who are experiencing fatigue.
Potential benefits
- Reduces fatigue from deficiency.Correcting a vitamin B12 deficiency or megaloblastic anemia through supplementation is well-established to resolve associated fatigue and shortness of breath.
- Supports energy metabolism.Vitamin B12 acts as a vital cofactor for the metabolism of every cell, helping convert fats and proteins into usable energy.
- Energy in chronic illness.Unconfirmed. Preliminary reports suggest potential fatigue relief in conditions like chronic fatigue syndrome or rheumatic diseases, but high-quality evidence for general energy enhancement is currently unproven.
Limitations
- Ineffective without deficiency.Systematic reviews show that vitamin B12 does not consistently improve energy levels or idiopathic fatigue in people who do not have an overt deficiency.
- General population uncertainty.There is no clear evidence that B12 acts as a general vitality booster for healthy individuals with adequate baseline levels.
- Study design constraints.Positive findings in chronic illness often rely on injections, nasal drops, or subjective reports without placebo controls, making it difficult to apply to standard oral supplements.
Things to consider
Fatigue is a non-specific symptom; B12 deficiency should be confirmed by a professional. Some observational research has linked persistently high serum B12 levels to increased health risks.
Study evidence
14 studiesVitamin B12 can help when fatigue is caused by B12 deficiency, but extra B12 has not shown a consistent energy benefit in people without deficiency. Favorable findings in chronic illness are preliminary and do not establish a general energy boost.
Studies
Explore published research for this goal.
Sources
Up to five highest-ranked published examples per ingredient. Study counts and charts include all published studies for the connection.
- Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
- Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
- Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
- Large-dose intravenous ferric carboxymaltose injection for iron deficiency anemia in heavy uterine bleeding: a randomized, controlled trial.
- The Effect of Parenteral or Oral Iron Supplementation on Fatigue, Sleep, Quality of Life and Restless Legs Syndrome in Iron-Deficient Blood Donors: A Secondary Analysis of the IronWoMan RCT.
- Ferric carboxymaltose vs. oral iron in the treatment of pregnant women with iron deficiency anemia: an international, open-label, randomized controlled trial (FER-ASAP).
- Effect of iron therapy on fatigue symptoms in non-anaemic iron deficient women of reproductive age- A Randomized Controlled Trial.
- Intravenous iron isomaltoside treatment of women suffering from severe fatigue after postpartum hemorrhage.
- Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
- Total magnesium intake and risk of frailty in older women.
- Red blood cell magnesium and chronic fatigue syndrome.
- Exercise, magnesium and immune function.
- Physicochemical properties of and volatile compounds in riboflavin fortified cloudy apple juice; study of its effect on job fatigue among Egyptian construction workers.
- Vitamin B status in patients with chronic fatigue syndrome.
- B-vitamins, related vitamers, and metabolites in patients with quiescent inflammatory bowel disease and chronic fatigue treated with high dose oral thiamine.
- Metabolic features of chronic fatigue syndrome.
- Effectiveness of Riboflavin in Inherited Metabolic Diseases: A Systematic Review
- Influence of thiamin supplementation on the health and general well-being of an elderly Irish population with marginal thiamin deficiency.
- Randomised clinical trial: high-dose oral thiamine versus placebo for chronic fatigue in patients with quiescent inflammatory bowel disease.
- Dietary reference values for thiamin.
- Effects of thiamine supplementation on exercise-induced fatigue.
- Long-term maintenance treatment with 300 mg thiamine for fatigue in patients with inflammatory bowel disease: results from an open-label extension of the TARIF study.
- A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
- Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
- Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
- Cobalamin deficiency: clinical picture and radiological findings.
- Vitamin B12 Deficiency: Common Questions and Answers.
- Effect of Vitamin D Supplementation on Fatigue in Multiple Sclerosis: A Systematic Review and Meta-Analysis.
- Vitamin D Supplementation in Adolescents and Young Adults With Juvenile Systemic Lupus Erythematosus for Improvement in Disease Activity and Fatigue Scores: A Randomized, Double-Blind, Placebo-Controlled Trial.
- Vitamin D in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome After COVID-19 or Vaccination: A Randomized Controlled Trial.
- The effects of vitamin D supplementation on disease activity and fatigue in Libyan rheumatoid arthritis patients.
- The effect of home-based aerobic training and vitamin D supplementation on fatigue and quality of life in patients with multiple sclerosis during COVID-19 outbreak.
- Oral acetyl-L-carnitine therapy reduces fatigue in overt hepatic encephalopathy: a randomized, double-blind, placebo-controlled study.
- The supplementation of acetyl-L-carnitine decreases fatigue and increases quality of life in patients with hepatitis C treated with pegylated interferon-α 2b plus ribavirin.
- Acetyl-L-carnitine reduces depression and improves quality of life in patients with minimal hepatic encephalopathy.
- A prospective study to evaluate the efficacy and safety of oral acetyl-L-carnitine for the treatment of chemotherapy-induced peripheral neuropathy.
- Metabolomic biomarkers for (R, S)-ketamine and (S)-ketamine in treatment-resistant depression and healthy controls: A systematic review.
- Cognitive and mood improvements of caffeine in habitual consumers and habitual non-consumers of caffeine.
- Caffeine-containing energy drink improves physical performance of elite rugby players during a simulated match.
- Differential cognitive effects of energy drink ingredients: caffeine, taurine, and glucose.
- Does Single or Combined Caffeine and Taurine Supplementation Improve Athletic and Cognitive Performance without Affecting Fatigue Level in Elite Boxers? A Double-Blind, Placebo-Controlled Study.
- Trait Energy and Fatigue Modify the Effects of Caffeine on Mood, Cognitive and Fine-Motor Task Performance: A Post-Hoc Study.
- Effects of Coenzyme Q10 on Statin-Induced Myopathy: An Updated Meta-Analysis of Randomized Controlled Trials.
- Coenzyme Q10 Supplementation in Athletes: A Systematic Review.
- Effectiveness of Coenzyme Q10 Supplementation for Reducing Fatigue: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.
- Antifatigue effects of coenzyme Q10 during physical fatigue.
- Effect of coenzyme Q10 supplementation on fatigue: A systematic review of interventional studies.
- Synergistic effects of creatine, carbs, protein on repeated sprint performance.
- The Effects of Creatine Monohydrate Supplementation on Recovery from Eccentric Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial Considering Sex and Age Differences.
- The Effect of Prior Creatine Intake for 28 Days on Accelerated Recovery from Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial.
- Creatine supplementation attenuates the rate of fatigue development during intermittent isometric exercise performed above end-test torque.
- The effect of continuous low dose creatine supplementation on force, power, and total work.
- Omega-3 Fatty Acid Supplementation for 12 Weeks Increases Resting and Exercise Metabolic Rate in Healthy Community-Dwelling Older Females.
- Effects of fish oil during hemodialysis on nutritional status and quality of life: a randomized double-blinded trial.
- Supplementation of fish oil and olive oil in patients with rheumatoid arthritis.
- DHA-rich Fish Oil Increases the Omega-3 Index and Lowers the Oxygen Cost of Physiologically Stressful Cycling in Trained Individuals.
- Fish oil reduces heart rate and oxygen consumption during exercise.
- Dietary supplements and fatigue in patients with breast cancer: a systematic review.
- Purified dry extract of Paullinia cupana (guaraná) (PC-18) for chemotherapy-related fatigue in patients with solid tumors: an early discontinuation study.
- Placebo-Controlled, Double-Blind, Randomized Study of a Dry Guarana Extract in Patients with Head and Neck Tumors Undergoing Chemoradiotherapy: Effects on Fatigue and Quality of Life.
- Effects of Acute Guarana (Paullinia cupana) Ingestion on Mental Performance and Vagal Modulation Compared to a Low Dose of Caffeine.
- Effectiveness of guaraná (Paullinia cupana) for postradiation fatigue and depression: results of a pilot double-blind randomized study.
- [Efficacy of potassium N-acetylaminosuccinate (Cogitum) in the treatment of asthenic syndrome: results of double-blind placebo-controlled trial].
- Human resting energy expenditure in relation to dietary potassium.
- Investigation of the effect of nitrate and L-arginine intake on aerobic, anaerobic performance, balance, agility, and recovery in elite taekwondo athletes.
- The Effects of Arginine-Based Supplements on Fatigue Levels following COVID-19 Infection: A Prospective Study in Romania.
- Isolated but not combined ergogenic effects of caffeine and L-arginine during an isokinetic knee extension.
- L-Arginine but not L-glutamine likely increases exogenous carbohydrate oxidation during endurance exercise.
- Effect of L-arginine on energy metabolism, skeletal muscle and brown adipose tissue in South Asian and Europid prediabetic men: a randomised double-blinded crossover study.
- Effects of spirulina (Arthrospira) platensis supplementation on inflammation, physical and mental quality of life, and anthropometric measures in patients with relapsing-remitting multiple sclerosis (RRMS): a triple-blinded, randomized, placebo-controlled trial
- A randomized, double blind, placebo controlled study of spirulina supplementation on indices of mental and physical fatigue in men
- Ergogenic and antioxidant effects of spirulina supplementation in humans
- Tricaprylin Alone Increases Plasma Ketone Response More Than Coconut Oil or Other Medium-Chain Triglycerides: An Acute Crossover Study in Healthy Adults
- Pharmacokinetics, safety, and effects on exercise performance of L-arginine alpha-ketoglutarate in trained adult men
- Effects of multi-herb and ashwagandha root formulas on stress modulation: a randomized, double-blind, placebo-controlled clinical study.
- Efficacy and Safety of Low-Dose Ashwagandha Supplementation on Exercise Endurance: A Randomized, Placebo-Controlled, Double-Blind, Clinical Trial.
- Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
- Enhancing healthspan with Ashwagandha (Withania somnifera): a comprehensive review of its multifaceted geroprotective benefits.
- Safety and Efficacy of Ashwagandha Root Extract on Cognition, Energy and Mood Problems in Adults: Prospective, Randomized, Placebo-Controlled Study.
- Acute Effect of Citrulline Malate on Repetition Performance During Strength Training: A Systematic Review and Meta-Analysis.
- Oral L-citrulline supplementation enhances cycling time trial performance in healthy trained men: Double-blind randomized placebo-controlled 2-way crossover study.
- Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness.
- Citrulline/malate promotes aerobic energy production in human exercising muscle.
- The Effect of Citrulline Malate Supplementation on Muscle Fatigue Among Healthy Participants.
- Effects of fungal supplementation on endurance, immune function, and hematological profiles in adult athletes: a systematic review and meta-analysis
- Effect of Cs-4 (Cordyceps sinensis) on exercise performance in healthy older subjects: a double-blind, placebo-controlled trial
- Evidence-based efficacy of adaptogens in fatigue, and molecular mechanisms related to their stress-protective activity.
- Randomized controlled trial of Siberian ginseng for chronic fatigue.
- The effect of eight weeks of supplementation with Eleutherococcus senticosus on endurance capacity and metabolism in human
- The Effect of Short-Term Rhodiola rosea Supplementation on Simulated Game Time, Perceived Fatigue, and Performance in Basketball Players.
- Effects of Rhodiola rosea on Physical and Decision-Making Performance in Football Players: A Randomised Controlled Trial.
- Combined Effects of Rhodiola Rosea and Caffeine Supplementation on Straight Punch Explosive Power in Untrained and Trained Boxing Volunteers: A Synergistic Approach.
- Rhodiola rosea in Subjects with Prolonged or Chronic Fatigue Symptoms: Results of an Open-Label Clinical Trial.
- Combined Rhodiola rosea and eccentric training boost endurance performance and lower-limb reactive strength in recreationally active women.
- Sleep symptoms associated with intake of specific dietary nutrients.
- Vanadium exposure-induced neurobehavioral alterations among Chinese workers.
- A cross-sectional analysis of air pollution in primary schools and children fatigue.