brain cognitive4 options reviewed

What actually helps with lack of focus

Inability to sustain attention on tasks, frequent mind-wandering, and difficulty concentrating for extended periods.

L-Theanine
amino_acid
Strong

L-theanine increases alpha brain wave activity, promoting a state of calm alertness. It modulates glutamate, GABA, serotonin, and dopamine levels, enhancing sustained attention without the jitteriness of stimulants.

Dose: 100–200 mg

L-Tyrosine
amino_acidmorning
Strong

L-tyrosine is the direct precursor to dopamine and norepinephrine via tyrosine hydroxylase. Under stressful conditions, catecholamine turnover increases and tyrosine supplementation prevents depletion, maintaining focused attention.

Dose: 500–1000 mg

Omega-3
fatty_acidwith_food
Strong

Omega-3 fatty acids improve prefrontal cortex function by enhancing dopamine signaling, increasing cerebral blood flow, and reducing neuroinflammation that impairs executive function and sustained attention.

Dose: 1000–2000 mg

Rhodiola
herbmorning
Strong

Rhodiola modulates HPA axis activity and enhances monoamine neurotransmitter levels (dopamine, serotonin, norepinephrine), supporting mental stamina and sustained attention during cognitively demanding tasks.

Dose: 200–400 mg

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