Supplements studied for combating fatigue and boosting energy.
63 supplements have studies linked to this goal. Iron scores highest (7/10), followed by Rhodiola Rosea (6/10) and Vitamin B12 (Cobalamin) (6/10). 7 of them reach moderate or strong support — the rest are thinly studied or showed little effect.
Supplements rated for Energy Levels
How to read these scores
The 0–10 score reflects how well the evidence supports a supplement for this specific goal, independent of how much it has been studied overall. It is an editorial rating checked against meta-analyses — how we set it.