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Prescription wakefulness-promoting agent. The Silicon Valley smart drug. Sustained focus for 10-12 hours without traditional stimulant side effects.
Common Dose
100mg
Dose Range
50–200mg
Frequency
1x daily, morning only
Half-Life
15 hours
Onset
45 min
Duration
12 hours
Cycling
Required
Legal Status
prescription
Inhibits dopamine reuptake (DAT blocker). Also modulates norepinephrine, orexin, histamine, and glutamate systems.
Neurotransmitter Pathways
💡 Fat-soluble — take with a fat source (e.g., fish oil, MCT oil) for better absorption.
⚠️ Start low and increase gradually. Individual responses vary.
2-3 days per week maximum. Daily use leads to diminishing returns.
Potential Side Effects
Contraindications
Drug Interactions
"Users consistently report excellent focus but heavy emphasis on tolerance management."
Based on analysis of r/Nootropics, r/StackAdvice, and r/biohackers
Modafinil for cognitive neuroenhancement in healthy non-sleep-deprived subjects
2015 — European Neuropsychopharmacology
Improved attention, executive function, and learning
PubMed2-3 days per week maximum. Daily use leads to diminishing returns.
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