Summary
Modafinil is primarily prescribed for narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Off-label use includes ADHD, depression-related fatigue, and cognitive enhancement. Can cause insomnia, anxiety, headaches, and rarely serious skin reactions (Stevens-Johnson syndrome, toxic epidermal necrolysis).
Dose Information
| ROA | Light | Common | Strong | Heavy |
|---|---|---|---|---|
| Oral | 50-100mg | 100-200mg | 200-300mg | 300mg+ |
Light
Common
Strong
Heavy
Onset, Duration & After-effects
| ROA | Onset | Comeup | Peak | Offset | Total |
|---|---|---|---|---|---|
| Oral | 20-60 min | 30-60 min | 3-5 hrs | 2-4 hrs | 5.8-11 hrs |
Effect Profile
215 reportsScores (1–10) curated from multiple sources:
- Effect keyword matching from PsychonautWiki catalog
- Validated against 203 Erowid trip reports
- Weighted by importance: core (×3), major (×2), minor (×1)
Stimulant
8.0
Intense
8/10
Strong stimulation, focus, and anxiety/jitters with moderate euphoria
Stimulation / Energy
×3
10
stimulation
wakefulness
Euphoria / Mood Lift
×2
7
motivation enhancement
Focus / Productivity
×2
10
focus enhancement
memory enhancement
motivation enhancement
thought acceleration
Anxiety / Jitters
×1
10
anxiety
increased heart rate
vasoconstriction
sweating
Based on reports from:
Tolerance
Build-up
minimal tolerance development in most users
Reset
not well established; generally low concern
Cross-tolerance
Effects
Aggregated from 203 Erowid and 12 Bluelight experience reports
Positive Effects 30
Stimulation
69.7%
89%
Focus Enhancement
57.7%
88%
Euphoria
37.6%
89%
Contentment
16.7%
85%
Joy
16.7%
80%
Geometric Imagery
16.7%
78%
Physical Energy Burst
16.7%
90%
Empathy
14.8%
70%
Music Enhancement
14.8%
70%
Auditory Effects
13.5%
75%
Tactile Enhancement
10.7%
80%
Color Enhancement
8.4%
80%
Memory Enhancement
8.3%
90%
Timelessness
8.3%
70%
Contact-With-Presence
8.3%
75%
Tactile Intimacy Enhancement
8.3%
75%
Motor Enhancement
8.3%
90%
Size Distortion
8.3%
75%
Alertness
8.3%
95%
Analysis Enhancement
8.3%
80%
Adverse Effects 38
Anxiety
41.4%
70%
Insomnia
33.3%
84%
Restlessness
16.7%
78%
Itching
16.7%
85%
Drowsiness
16.7%
82%
Thought Disorganization
16.7%
78%
Involuntary Movements
16.7%
80%
Time Dilation
16.7%
88%
Frequent Urination
16.7%
85%
Body Load
16.7%
78%
Headache
15.9%
75%
Increased Heart Rate
13.8%
70%
Confusion
13.5%
90%
Nausea
11.1%
85%
Visual Distortions
9.3%
70%
Jaw Clenching
8.4%
83%
Jitteriness
8.3%
85%
Heart Palpitations
8.3%
85%
Aggression
8.3%
85%
Emotional Blunting
8.3%
85%
Pill Identifiers
18
known pill identifiers on record — view imprints, colors, shapes, and images
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Modafinil's nerd page
Pharmacology, chemical data, effect profiles, and more
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