NootropicHigh evidence

Modafinil

Wakefulness-promoting agent (eugeroic)

Also known as: Provigil, Modalert, Alertec

A prescription eugeroic approved for narcolepsy and shift-work sleep disorder, widely used off-label as a cognitive-enhancing 'smart drug'.

Evidence gradeHigh evidence

Strong evidence for wakefulness; moderate evidence that it improves attention and executive function, especially when sleep-deprived.

Supported by meta-analyses or multiple double-blind RCTs.

Intended use

Approved for excessive daytime sleepiness (narcolepsy, OSA, shift-work disorder); used off-label for focus and wakefulness.

Mechanism of action

Primarily inhibits dopamine reuptake and modulates orexin, histamine, and norepinephrine systems to promote wakefulness.

Reported benefits

Wakefulness
Robustly reduces excessive sleepiness in approved indications.
Cognitive enhancement
Meta-analyses show improved attention and executive function in non-sleep-deprived adults.
Low abuse liability
Lower dependence potential than classical stimulants.

Risks & side effects

Headache & insomnia
low risk
Most common side effects.
Serious skin reactions
high risk
Rare but serious rashes (e.g., Stevens-Johnson syndrome).
Cardiovascular effects
moderate risk
Can raise blood pressure and heart rate.

Research & citations

Studies are ordered by design strength. Dots indicate the rigor of each study type — meta-analyses and double-blind RCTs rank highest, case reports and in vitro work lowest.

Modafinil for cognitive enhancement in healthy non-sleep-deprived adults
Consistent benefit on attention, executive function, and learning.
European Neuropsychopharmacology · 2015 · n = 24 studies
Meta-analysis / Systematic review
Modafinil in narcolepsy
Significant reduction in daytime sleepiness vs placebo.
Neurology · 2000 · n = ~558
Double-blind RCT

Legal status by region

Regulatory status varies widely and changes often. Verify against current local law before acting.

Region	Status	Notes
United States	Prescription	Schedule IV prescription drug.
United Kingdom	Prescription	Prescription-only medicine.
European Union	Prescription	Prescription-only; use narrowed to narcolepsy in some states.
Global (sport)	Banned	Prohibited in competition by WADA.

Sourcing & prescribing

Where a compound can legally be obtained, and who is able to prescribe it.

Licensed pharmacy (prescription)
Via a physician for an approved indication.
Legal
Overseas online pharmacies
Personal import is a legal gray area and often technically prohibited.
Gray area