Energy & Fatigue
181 supplements analyzed and ranked by clinical evidence.
Supplement Evidence
Hb/iron ↑
Fatigue ↓
Fatigue↓ Hb↑
Energy↑ Hb↑
Energy↑ Fatigue↓
Heart rate↑ BP↑
Butyrate↑ fatigue↓
SCFAs↑ energy↓
Strength/fatigue power +
Muscle creatine+PCr boosts
Endurance +44-51%
Adrenaline/glycerol up
Alertness/fatigue improved
Hb↑, fatigue↓
Anaemia↓, Hb↑
Glucose↓ Fatigue↓
Satiety↑ Energy↑
Fat absorption/energy loss
Energy +3.6kg/d
Lean mass + insulin
Fat loss + satiety
Energy/fatigue +performance
Hydration/electrolytes
Heart: pump + symptoms
Fatigue: ↓
Fatigue ↓, endurance ↑
Strength ↑, fatigue ↓
Phe↑ fatigue↑ -77%
Phe/Tyr depletion ↓ fatigue
Energy+fatigue: ↑/↓
Fatigue: +/−
Energy/fatigue: +17.2% energy
Sleep: +5.7%
Less fatigue, better vitality
Fatigue↓, alertness↑, sleep↑
Fatigue ↓ +10
Fitness better
Fatigue↓, energy↑
O2/iron support
Mood/vitality↑, fatigue↓
MS fatigue↓ 2-4w
B12 biomarkers↑, anemia↓
Exercise fatigue↓ +26%
Fatigue↓, energy↑
Ketosis/alanine shift
Work capacity↑, fatigue↓
Thyroid suppression, +TSH
Goitre shrinkage, iodine rise
Fatigue ↓
Exercise performance ↑
Fatigue ↓, cognition ↑
Exercise capacity ↑
Riboflavin status, +83%
Fatigue/function, -25 pts
Fatigue ↓, cognition ↑
Exercise capacity ↑, fatigue ↓
Biomarkers improved, fatigue ↓
Hb ↑, fatigue ↓
Iron status ↑, fatigue ↓
Alertness + fatigue
Cognition + vigilance
Fatigue↓; NAD+↑
Energy recovery +3.5d
Fatigue↓, sleep↑
Energy/metabolism↓ glucose
Fatigue ↓; energy ↑
~15% VO2 ↓
Fatigue ↓; recovery ↑
Mental fatigue -22.5
Cognition +3.4
GSH↑, fatigue↓
+8-38% recovery
ATP↑, fatigue↓
ATP ↑, fatigue ↓
Energy efficiency ↑
NAD+↑, fatigue↓
Exercise tolerance↑, fatigue↓
Malaria↓ anemia↓
+0.6 g/dL Hb
Work/fatigue +19-22%
Dyspnea/walk +50m
Energy intake +793 kcal
Energy: improved recovery
Fatigue: reduced exhaustion
Metabolic/oxidative protection
Mitochondrial +30 copies
Oxidative cost ↓, endurance ↑
Fatigue ↓, cognition ↑
Angina/exercise tolerance ↑
less fatigue, +43.7
better exercise tolerance, -1.0
improved fatigue/energy, +0.8
Fatigue ↓, endurance ↑
VO2max/lactate better
Fatigue ↓, appetite ↑
Fatigue ↓, energy ↑
Fatigue/weakness ↓, oxygen ↑
fatigue ↓, +74%
physical function ↑, +11%
Resting energy↑; fatigue↓
HR/BP 0
Intake/gain +
Rumen pH +
Glucose uptake/flow +24–49%
Hemoglobin/iron + GI better
Fatigue -4.4 VAS
Serine↑ / BCAA↓
Hunger↓, GLP-1↑
Energy up; fatigue down
VO2↑, lactate↓
Less sedation, -
More energy use +
Better performance +2%
Sleep/fatigue boosts
Energy/recovery +performance
Fatigue ↓, endurance ↑
+3.2 min endurance
Energy/fatigue +VO2
Energy/fatigue +endurance
Energy/fatigue +recovery
Cognition +, fatigue?
Attention/memory +
Less fatigue, better endurance
Reduced damage, faster recovery
less fatigue, lower effort
better endurance, less damage
Sleep/Fatigue: better sleep, less fatigue
Performance: faster recovery, energy
Fatigue/Arginine ↓
Performance/Endurance ↑
Fatigue ↓; endurance ↑
Fatigue ↓; recovery ↑
Fatigue ↓
Fatigue ↓ (65%)
↓ fatigue, ↑ arousal
+HR/BP, +thermogenesis
Less anemia, less fatigue
Improved iron/vitamin A status
Lower glucose spikes
Energy/fatigue improved
Energy↑ BAT activation
Fatigue↓ +9.6
Endurance↑/soreness↓
Exercise capacity↑, symptoms↓
QoL↑, fatigue↓
Energy/fatigue +67-84%
Mood/fatigue improved
DHEAS normalised
Energy/fatigue: improved
CoQ10↑, fatigue↓
Exercise recovery: better
Energy/fatigue ↑
+26–83%
Recovery/inflammation ↓
Histidine ↓ insulin resistance
Carnosine ↓ glucose
Sympathetic arousal +
Less fatigue + power
Hb↑, iron↑
+1.8 to +2.3
hepcidin↓, fatigue↓
Fatigue ↓; AMS 0%
VO2max ↑; fatigue ↓
Delayed fatigue +7–24%
Higher power/endurance +14–22%
Fatigue ↓28.3%
Fitness/well-being ↑
Fatigue↓, sleep↑
Nitrogen balance↑, weight↑
Glucose/insulin spikes ↓
2h iAUC −34%
GSH/mitochondria + fatigue
23.8–26.3% longer
EPO/VO2 preserved
Endurance up; markers down
VO2max +5.4%
Lower fatigue 19%
Less fatigue symptoms
Copper uptake ↓82%
Blood/energy unchanged
Strength/gait ↑
Power/energy: +17.7%, +8.9 W
Soreness/damage: CPK −32.6
Fatigue ↓, +13
Recovery/efficiency ↑, +1.2%
Ketones ↑, glucose ↓
Fatigue/performance mixed
Exercise fuel shift
Cognition/function + dose
Respiratory decline +6.27%
Methionine: DMI, milk, protein
Fatigue: cycling +1.4 min
Cognition up; fatigue unchanged
Psychobehavioural up; fatigue unchanged
ADL up; fatigue unchanged
Fatigue improved, QoL +50
Exercise tolerance +53s
Energy/Fatigue: ↓ fatigue
Energy/Fatigue: ↑ endurance
Less fatigue, +2.39 min
Metabolic improvement, body fat ↓
Fat oxidation + ketones
Muscle strength + VO2max
Fatigue/appetite better
Nutrition/KPS +23%
Alertness + performance
Fatigue/energy boost
Glucose/insulin shifts
Cardio-recovery/lipolysis
Energy/fatigue: TTE +1.28
Energy/fatigue: REE +12.4%
Energy/fatigue: sleep +3%
↑Ketones, fat use
↓Heart rate, TG
More fat burning
+16% fat oxidation
Less fatigue / longer endurance
Energy use +4-8%
Fatigue ↓
Satiety + energy
Lower glucose spikes
Slower AA release
Lower post-meal sugar
Less hunger / intake
Faster clearance, less fatigue
Less fatigue, fewer side effects
Less sedation; −25%
Improved fatigue? unclear
Better glycemia, +1.76% HbA1c
Lipids improved in subgroups
Better endurance +26%
Lower performance -11.6%
Fatigue ↓
Vitality +20.9
Energy use +12%
Fat burn + aerobic fitness
Less fatigue, more energy
+REE, +TTE
Fatigue recovery +17.4%
Vigor improved
ALT -1.9 U/L
Better vigilance, +7.1%
Improved cognition under hypoxia
Iron uptake, fatigue risk
+1.5x hepcidin, DMT1↓
Se status, liver genes
Energy/fatigue +50 pts
ATP recovery +53 s
Fatigue -85%; weight +11%
CD4 +14%; weight +11%
Choline/fat-oxidation boost
Strength/vigor, not fatigue
Energy/Fatigue: ↓ fatigue
Energy/Fatigue: +performance, −fatigue
Energy/VO2max +
Fatigue/sleepiness +
Fuel shift: FFA↓, carbs↑
NAD+ boost: ~2x
Alertness/attention +accuracy
Fatigue/stress - sAA, +sleep
Alertness, less sleepiness
Mental energy +8.15
Energy/fatigue: +VO2, time-to-fatigue
Energy/fatigue: ↓MDA, ↑SOD/GSH
Energy/fatigue: +32% TE
Exercise capacity +VO2max
Walking distance +55-59%
Fatigue/cognition: GABAB + plasticity
Pain/inflammation: reduced pain, IL-6
Strength ↑ +7.7–10.2
Lactate ↓, no mass change
Fatigue improved +14%
Energy/autonomic +10%
Attention + work, +2.2
Fatigue/stress lower, cortisol
Alertness, less fatigue
Reaction time, +15–20 ms
Depression, remission +
Early mood +
Endurance +3–13%
Strength +10%
Intake↑; AA↑ (+25%)
Taste↑; AA↑ (+50%)
Endurance +36%
Reps +10–21%
Mitochondrial ↑; fatigue unchanged
Performance no change
Less fatigue, +10.5 ketones
Lower fat oxidation, -24%
Fat oxidation up, mixed
Better glucose control
HbA1c −0.75%
Fatigue/pruritus better
Bilirubin/AP ↓
No energy/fatigue impact
Cognition/ADL +4.6
Energy/fatigue +17%
Energy/fatigue -42.8%
Energy/fatigue improved
↑ LVEF, walk capacity
↓ VPCs; 7 vs 13 deaths
Lower glucose spikes
−0.67 mmol/L FBG
+7.96% WBC, growth
improved FCR, energy
Strength +9–11%
Muscle size +3.5%
Memory tests + MQ
Perceived fatigue lower
Higher thiamine/TDP exposure
+1147% plasma thiamine
Better ETK, fatigue
Lower glucose load
Less fatigue risk
Better satiety +51%
Less burnout, mood
+12% VO2, +23% endurance
Burnout ↓
VO2peak +12%
BP up +3.4-5.4
Energy/focus up
Faster walking, less fatigue
Mitochondria up, +7.4s walk
Better neurological energy
Seizures reduced significantly
T3↑, T4↓
Symptomatic subgroup improved
Fatigue scores down
Physical/cognitive fatigue down
Energy up, BAT active
+18.6% EE, less fat
Weight down, EE up
Fat oxidation ↑
ALA-DAG +17%
Less fatigue, -7.1pp
Collagen breakdown, -38%
Antioxidants up; fatigue↓
Brain factors up; energy↑
Lower injury, lactate
More α-KG, power
Anxiety, symptoms ↓
Grip strength ↑
Fat loss, -2.7 kg
Weight loss, -2.7 kg
Lower HbA1c, less fatigue
−0.36 HbA1c, dose↓
Fatigue -15%
Vitality +21%
Endurance threshold +13.9%
+6% sprint power
Hydration +2.5%
Cognition improved
Less dyspnea, better stamina
6MWD up; dyspnea down
Higher fat burn/+48% BAT
Less fatigue/+23% lift
Endurance + push-ups
Oxidative stress ↓
Better glucose control
Less insulin resistance
Hb +0.10
DSI +25.8
Power +5%; NO↑
Soreness −40%; reps +53%
BP↓; cycling efficiency↑
Oxygenation up, fatigue down +4.8%
Inflammation down, energy up −42.9 mg/L
Insulin sensitivity +14%
Glucose/insulin lowering
Fatigue/sleep improved
70% symptom-free
EE ↑ ~4%
Fat oxidation ↑
Lower fatigue; hepcidin -25%
More energy; hemoglobin +10%
Glycogen +100%, insulin ↓
Strength/lean mass ↑
Strength +13%; gait +8%
Muscle thickness +3-5%
Locomotion/alertness +
Sniffing -
GSH, mitochondria up
Oxidative stress down
LDL/CRP/ET-1 ↓
Exercise tolerance ↑
Mitochondria + OXPHOS
Phospholipids, PC:PE↓
Energy↑, fatigue↓
PPEE +10%
Energy/Fatigue up
+25% ON time
Energy/Fatigue up +70 min
LVEF ↑; fatigue ↓
Ventricular performance ↑; RPE ↓
↓O2 cost, +endurance
−RPE / faster sprint
↑Arousal/HR: +50 NE
↓Sedation/Fatigue: -60 min