Modafinil vs Armodafinil: What Is the Difference?

Introduction

Modafinil and armodafinil are closely related prescription medicines used
to improve wakefulness in adults with certain sleep-related conditions.
Although they are chemically related, they are not identical medicines.

What Is Modafinil?

Modafinil is the active ingredient in medicines such as Provigil. FDA
labeling identifies modafinil as a prescription medicine indicated to
improve wakefulness in adults with excessive sleepiness associated with
narcolepsy, obstructive sleep apnea, or shift work disorder.

What Is Armodafinil?

Armodafinil is the active ingredient in Nuvigil. It is closely related to
modafinil and is also used to improve wakefulness in adults with excessive
sleepiness associated with narcolepsy, obstructive sleep apnea, or shift
work disorder.

Are They the Same?

No. Modafinil and armodafinil are closely related, but they are different
active ingredients. Armodafinil represents the R-enantiomer of the
modafinil molecule.

Why Does the Difference Matter?

Differences in formulation and pharmacokinetic properties can influence
how a medicine behaves in the body. Individual response can also vary.
For this reason, people should not assume that one medicine is automatically
better or more appropriate than the other.

Safety

Both medicines have important safety considerations. The FDA prescribing
information for armodafinil includes warnings concerning serious
dermatologic reactions and hypersensitivity reactions.

Anyone considering either medication should discuss the appropriate choice
with a qualified healthcare professional.

Which One Is Better?

There is no universal answer. The appropriate medicine depends on the
individual, the underlying sleep condition, other medicines, medical
history, and the judgment of the prescribing clinician.

Vendor Research

For readers researching online vendors, ModafinilXL provides links to
vendor websites for independent review of the information they publish:

Visit Modafinia

Visit Kuikdose