Compare Supplements

Approved dosing is 200 mg once daily in the morning for narcolepsy and OSA, or 200 mg taken ~1 hour before the start of a night shift for shift-work sleep disorder. A prescription drug; off-label cognitive use is not an approved or standardized regimen.

Morning

Oral tablet (modafinil)

400mg

Morning · with food (preferred)

Standardized extract capsules

• Prior hypersensitivity or serious skin reaction to modafinil/armodafinil
• History of left ventricular hypertrophy or mitral valve prolapse with prior stimulant use
• Uncontrolled hypertension or arrhythmia (use with caution)

• Hormonal contraceptives
• Warfarin / CYP2C19 substrates
• MAO inhibitors / other stimulants

• Hormone-sensitive conditions
• Bleeding disorders
• Autoimmune diseases

• Blood thinners (Warfarin)
• Diabetes medications
• Stimulants/Caffeine