Modafinil
Modafinil
Brand names:Provigil, Alertec
A wakefulness-promoting agent with lower peripheral cardiovascular and abuse potential than amphetamines. Modafinil is the operational stimulant of choice for sustained operations and aviation medicine when sleep deprivation is the rate-limiting factor. Extensively studied by US military operational research. Standard dosing maintains alertness during prolonged operations without significant cognitive impairment.
Pharmacology and Actions
Modafinil promotes wakefulness through poorly characterized mechanisms involving dopamine, norepinephrine, serotonin, histamine, and orexin systems. Less peripherally active than traditional stimulants (amphetamines, methylphenidate), with lower peripheral cardiovascular effects. Lower abuse potential than amphetamines but still scheduled.
Indications
- Narcolepsy and idiopathic hypersomnia
- Shift work sleep disorder
- Obstructive sleep apnea (adjunctive to CPAP)
- Military and operational use for sustained alertness during prolonged operations and sleep deprivation
Absolute Contraindications
- Known hypersensitivity to modafinil or armodafinil (Stevens-Johnson syndrome reported)
- Left ventricular hypertrophy or mitral valve prolapse history with prior stimulant adverse effects
- Severe cardiovascular disease (uncontrolled hypertension, recent MI, unstable angina)
Precautions and Side Effects
Common: headache (most common, often dose-dependent), nausea, anxiety, insomnia. Cardiovascular: modest BP and HR increase. Psychiatric: anxiety, irritability, depression, mania, psychosis (rare). Serious skin reactions: Stevens-Johnson syndrome, toxic epidermal necrolysis, DRESS syndrome - rare but life-threatening, discontinue immediately at any rash. Drug interactions: CYP3A4 inducer - reduces efficacy of hormonal contraceptives (alternative contraception recommended during and 1 month after therapy), cyclosporine, midazolam, and others; CYP2C19 inhibitor - increases phenytoin, propranolol, diazepam, omeprazole levels; additive cardiovascular effects with concurrent stimulants (caffeine, sympathomimetics). Half-life 15 hours - the operational benefit and risk; it lasts a long time. Pregnancy Category C (avoid; possible intrauterine growth restriction). Limited lactation data; safer alternatives preferred. Elderly: reduced clearance, lower starting dose. Hepatic impairment: reduce dose by 50 percent in severe impairment. Monitor blood pressure, heart rate, sleep quality, mental health symptoms, skin (any rash), and hormonal contraception efficacy.
Adult Dosing
Pediatric Dosing
Not approved in children for narcolepsy or shift work; FDA has noted increased Stevens-Johnson syndrome risk in pediatric use.
Pharmacokinetics
Peak Effect: 2 to 4 hours.
Duration: 12 to 15 hours (the operational benefit and the operational risk - it lasts a long time).
Storage and Handling
Schedule IV controlled substance - secured storage, chain of custody, administration log. Room temperature, protect from light and moisture.
Reconstitution:
Oral formulation only.
TCCC and TECC Role
Modafinil is not in the TCCC formulary. It appears in military operational medicine for sustained operations alertness management and in tactical EMS supplemental formularies. Mission impact is minimal at standard doses - this is one of the few medications on the TEMS supplemental list that is explicitly mission-supporting rather than mission-limiting. Used selectively in sustained operations where sleep deprivation is the rate-limiting factor for operational performance.
Modafinil has been extensively studied by military operational research (US Army Aeromedical Research Laboratory, USAF, foreign equivalents) and has documented efficacy for maintaining alertness during 40+ hour operations. The operational profile is favorable compared with amphetamines: less peripheral cardiovascular load, lower abuse potential, no significant euphoria, fewer withdrawal symptoms after stopping. Standard protocols give 200 mg every 8 to 12 hours during sustained operations. The cleanest use case is aviation - long missions, mid-mission rest impossible, sleep deprivation as the limiting factor. Less appropriate for routine garrison or training use; the goal is operational mission completion, not routine alertness management.
Treating modafinil as a generic stimulant or replacement for sleep. It does not eliminate sleep debt; it suppresses sleep drive. Cognitive performance still declines during prolonged sleep deprivation even on modafinil, though more slowly than without it. The other mistake is taking modafinil too late in the operational period - the 12 to 15 hour duration means operators given modafinil at hour 30 of a 40-hour operation will have significant sleep difficulty 12 hours later. Plan the dose timing relative to the next protected sleep window.
This drug profile is provided as educational reference material for trained medical providers. It is not medical advice, not a substitute for formal training, and not a substitute for current published guidelines or medical direction.
Drug administration is governed by your scope of practice, agency standing orders, medical director protocols, and applicable state and federal regulations. Controlled substances are subject to additional handling, accountability, and documentation requirements per DEA and state law. Always verify dosing, indications, contraindications, and route of administration against current published guidelines and your local protocols before administration.
If this content is being viewed during a medical emergency, call 911 immediately and follow the direction of your local emergency dispatch and medical control. Do not use this reference as a substitute for emergency medical services.
Drug information evolves. Last reviewed dates and source citations are provided for each entry. Confirm currency against the cited source before clinical use.
Penn Tactical Solutions publishes this reference for educational purposes. PTS does not provide medical direction and does not assume responsibility for clinical decisions made in the field. Clinical responsibility rests with the administering provider, their medical director, and their agency.
Educational reference for trained medical providers. Not medical advice. Not a substitute for formal training, current published guidelines, or medical direction. Drug administration is governed by your scope of practice, agency standing orders, medical director protocols, and applicable state and federal regulations. Controlled substances require additional storage, accountability, and documentation per DEA and state law.
In a medical emergency, call 911. This reference is not a substitute for emergency medical services.
Verify dosing, indications, and contraindications against current published guidelines and your local protocols before administration. Confirm content currency against the source citation. Penn Tactical Solutions does not provide medical direction. Clinical responsibility rests with the administering provider, their medical director, and their agency.
Modafinil
Schedule IV| IV/IO | None (None) |
| IM | None (None) |
| IN | None (None) |
| PO | 200 mg PO once daily, taken in the morning for shift work or narcolepsy, or before extended operational period (1 hour before sustained wakefulness). Some military protocols use 100 to 200 mg every 12 hours for very prolonged operations. Reduce to 100 mg in elderly or hepatic impairment. (1 to 2 hours) |