01 · How it works
Atypical wakefulness
Modafinil weakly inhibits dopamine reuptake and influences orexin, histamine, norepinephrine, glutamate, and GABA systems. It is not risk-free simply because it feels less stimulating than amphetamines.
02 · Immediate effects
Recognize the effects
Signs of Use
- Reduced sleepiness and increased alertness
- Headache or dry mouth
- Anxiety, restlessness, or insomnia
- Palpitations or elevated blood pressure
- Rash, fever, or mucosal sores
Short Term
- Wakefulness and mental endurance
- Mild appetite suppression
- Headache and gastrointestinal upset
- Irritability or racing thoughts
- Agitation or hallucinations in severe toxicity
Long Term
- Sleep debt and rebound hypersomnia
- Anxiety, depression, or mania
- Psychological reliance
- Rare severe cutaneous reactions
- Drug interactions from CYP enzyme effects
03 · Long-term consequences
Interactions and skin reactions
Modafinil can reduce hormonal contraceptive effectiveness and alter levels of other medicines. Stop and seek urgent care for rash or blistering.
Medical emergency
Identifying an emergency
Chest pain, dangerous pulse, confusion, hallucinations, or a feverish spreading rash with blisters or mucosal sores require 911.
Important: Ask a clinician about contraception and medication interactions