NutriStack
Symptom·Cognitive·Reviewed May 30, 2026
Supplements for Poor concentration / focus.
When poor concentration / focus is the complaint, these are the supplements most often associated with it in the NutriStack library, ranked by how directly each one targets it and by the strength of the evidence.
Ranked by relevance, top first.
Relevance reflects how directly each supplement targets this symptom in the NutriStack map. Evidence is the supplement’s own rating. Open any name for the full profile.
- 01Lion's ManeLimited74% match
Used for attention and cognitive resilience rather than acute stimulant-like drive.
SuggestedDual extract lion's mane - 02Alpha-GPCModerate73% match
Provides choline for acetylcholine-dependent focus and processing speed.
SuggestedAlpha-GPC - 03L-TheanineModerate72% match
Can improve calm focus, especially when paired with modest caffeine.
SuggestedL-theanine - 04Fish OilModerate65% match
DHA-rich omega-3 support can help cognition over time rather than acutely.
SuggestedHigh-DHA fish oil - 05IronStrong63% match
Low iron or ferritin can impair concentration and cognitive endurance.
SuggestedIron bisglycinate - 06Vitamin B12Strong62% match
B12 deficiency can present as reduced focus, slower thinking, and low mental stamina.
SuggestedMethylcobalamin - 07CiticolineModerate61% match
Supports phospholipid and acetylcholine pathways relevant to attention.
SuggestedCiticoline
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These rankings come from the same library that powers the NutriStack app. Open any supplement for full dosing, forms, interactions, and citations.