Armodafinil

The R-enantiomer of modafinil — same family, longer-acting. Prescription-only. Reports only.

Effects

• Same wakefulness promotion as modafinil; often described as smoother and longer-lasting.
• Appetite suppression and headache are commonly reported.

Uses

• Approved: narcolepsy, obstructive sleep apnea daytime sleepiness, shift-work disorder.

Official dose (label)

• The FDA label for Nuvigil states 150–250 mg once daily in the morning, varying by indication.
• Label text only — not a recommendation.

Official research

• FDA label — Nuvigil (armodafinil).
• PubMed — reviews comparing armodafinil and modafinil.

Anecdotal research

• Often described as modafinil's steadier sibling; harder to time so sleep isn't affected.

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