Skip to main content
Botanical leaves with dew, macro
Guide · ranked by evidence

Supplements for energy, in order.

For most people wanting more energy, creatine tops our ranking at 9.4. Take 5g daily, every day, no cycling. It's the most-studied energy supplement there is, and it works by refilling the cellular fuel your muscles and brain burn through. Reliable, cheap, and the effect holds up under scrutiny.

How we rankHuman trials first, then how large the effect is, then how safe and how easy to take. Worded as verdicts, never scored.
In evidence orderEarned verdict
Leads on evidenceCreatinePhysical and mental energy, cognitive performance5g daily · Any time, consistency matters · 2-4 weeks · $
Top Pick
Rhodiola RoseaMental fatigue, burnout, demanding work200-400mg · Morning · 1 week · $$
Best for Mental Energy
Iron (if deficient)Women, vegetarians, those with tested deficiencyBased on blood test · Morning with vitamin C · 2-4 weeks · $
Essential if Low
CoQ10Adults over 40, statin users100-200mg ubiquinol · With fatty meal · 4-8 weeks · $$$
Best for 40+
The read

Start with creatine (9.4, 5g daily). It's the closest thing to a sure bet: consistent results, well-studied, and it supports both physical output and mental sharpness. You don't need to load or cycle. Just take 5g every day and give it a few weeks. If your energy problem feels more like stress-driven burnout than physical fatigue, add Rhodiola Rosea (8.6, 200-400mg). It targets the wired-but-tired feeling rather than raw output, so it's a good pairing with creatine, not a replacement. Here's the honest caveat, and it's the most important line on this page: if you're genuinely exhausted, get a blood test before buying anything. Iron scores 8.4, but only if you're actually deficient. Iron when you don't need it does nothing good and can cause harm, so it's the one option here you should not take on a hunch. Simple plan: creatine for almost everyone, rhodiola if stress is the driver, iron only with lab confirmation.

The details, row by row
CreatineExtensively studied
Where it is strongerDecades of researchBrain + muscle energyVery safe
Worth knowingWater retention initiallyTakes time to saturate
Rhodiola RoseaExtensively studied
Where it is strongerReduces fatigueImproves moodWorks relatively fast
Worth knowingStimulating - avoid PMExtract quality varies
Iron (if deficient)Well studied
Where it is strongerDramatic improvement if deficientAddresses root cause
Worth knowingOnly helps if deficientCan cause GI issues
CoQ10Well studied
Where it is strongerCellular energyHeart healthCounters statin effects
Worth knowingExpensiveTakes time
Check any of these against your listThe same records, your exact list
Open /check
Related questions
What is the best supplements for energy?

Based on clinical evidence, Creatine ranks as the top choice for energy, on the strength of Decades of research and Brain + muscle energy. Physical and mental energy, cognitive performance.

How much supplements should I take for energy?

For energy, the studied dose of Creatine is 5g daily. Timing: Any time, consistency matters. Most people notice effects within 2-4 weeks.

How long until supplements helps with energy?

Expected onset varies: Creatine typically takes 2-4 weeks; Rhodiola Rosea typically takes 1 week; Iron (if deficient) typically takes 2-4 weeks; CoQ10 typically takes 4-8 weeks. Consistency matters for all of them.

Are there side effects of supplements for energy?

Common considerations include: Water retention initially; Takes time to saturate. Start with lower doses and increase gradually. Consult your doctor if you have health conditions or take medications.

Keep reading

Educational reading, not medical advice. Your doctor makes the call for your body.

Written and reviewed by the IngredientMD editorial team.