Nootropic supplements
Cognitive enhancers for focus, memory, and mental clarity.
8 supplements in this category
L-Theanine
Green tea amino that produces calm focus by raising alpha brain waves. Pairs perfectly with caffeine to take the edge off without sedation.
Dose: 100–400 mg
Alpha-GPC
The most bioavailable choline source for the brain. Boosts acetylcholine for focus, learning, and athletic power output.
Dose: 300–600 mg
Lion's Mane Mushroom
Medicinal mushroom that promotes nerve growth factor (NGF). Popular for memory, mood, and nervous system regeneration.
Dose: 500–3000 mg daily
Bacopa Monnieri
Ayurvedic adaptogen with the strongest evidence for memory enhancement after 12 weeks. Slow-build supplement, not acute.
Dose: 300 mg (50% bacosides)
Rhodiola Rosea
Russian-studied adaptogen that boosts mental stamina, mood, and exercise tolerance under stress. One of the most acutely-active adaptogens.
Dose: 200–600 mg (3% rosavins, 1% salidroside)
CDP-Choline (Citicoline)
Choline + cytidine — both crossing the blood-brain barrier to support membrane integrity, dopamine, and acetylcholine. Strong stroke-recovery evidence.
Dose: 250–500 mg daily
Phosphatidylserine
Cell membrane phospholipid that lowers cortisol and supports memory in aging. Particularly useful for stress-induced poor sleep.
Dose: 100–300 mg daily
NMN
NAD+ precursor with strong rodent longevity data. Human evidence is preliminary but growing for energy, metabolic health, and athletic performance.
Dose: 250–1000 mg daily
All 28 comparisons in this category
L-Theanine vs Alpha-GPCL-Theanine vs Lion's Mane MushroomL-Theanine vs Bacopa MonnieriL-Theanine vs Rhodiola RoseaL-Theanine vs CDP-Choline (Citicoline)L-Theanine vs PhosphatidylserineL-Theanine vs NMNAlpha-GPC vs Lion's Mane MushroomAlpha-GPC vs Bacopa MonnieriAlpha-GPC vs Rhodiola RoseaAlpha-GPC vs CDP-Choline (Citicoline)Alpha-GPC vs PhosphatidylserineAlpha-GPC vs NMNLion's Mane Mushroom vs Bacopa MonnieriLion's Mane Mushroom vs Rhodiola RoseaLion's Mane Mushroom vs CDP-Choline (Citicoline)Lion's Mane Mushroom vs PhosphatidylserineLion's Mane Mushroom vs NMNBacopa Monnieri vs Rhodiola RoseaBacopa Monnieri vs CDP-Choline (Citicoline)Bacopa Monnieri vs PhosphatidylserineBacopa Monnieri vs NMNRhodiola Rosea vs CDP-Choline (Citicoline)Rhodiola Rosea vs PhosphatidylserineRhodiola Rosea vs NMNCDP-Choline (Citicoline) vs PhosphatidylserineCDP-Choline (Citicoline) vs NMNPhosphatidylserine vs NMN