Mental clarity
99 supplements analyzed and ranked by clinical evidence.
Supplements99
Supplement Evidence
Iodine
Strong
Mental clarity +0.9
Thinking/motor +4 tests
Cognition +2.1 points
1602 studies·17 benefits
Multivitamin
Strong
Memory +0.07 SD
Attention speed +8.5%
Anxiety/stress reduced
450 studies·18 benefits
Coenzyme Q10
Moderate
Cognitive scores, slight gains
Oxidative stress, improves
348 studies·17 benefits
Phosphatidylserine
Moderate
Memory/cognition +0.7
Neurochemistry/metabolism +0.4
58 studies·11 benefits
Main EffectsStudies Benefits