November 25, 2015
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(armodafinil) Tablets


NUVIGIL (armodafinil) is a wakefulness-promoting agent for oral administration. Armodafinil is the R-enantiomer of modafinil which is a 1:1 mixture of the R- and S-enantiomers. The chemical name for armodafinil is 2-[(R)(diphenylmethyl)sulfinyl]acetamide. The molecular formula is C15H15NO2S and the molecular weight is 273.35.

The chemical structure is:

NUVIGIL® (armodafinil) Structural Formula Illustration

Armodafinil is a white to off-white, crystalline powder that is slightly soluble in water, sparingly soluble in acetone, and soluble in methanol.

NUVIGIL tablets contain 50, 150, 200 or 250 mg of armodafinil and the following inactive ingredients: croscarmellose sodium, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone, and pregelatinized starch.

What are the possible side effects of armodafinil (Nuvigil)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using armodafinil and call your doctor at once if you have a serious side effect such as:

  • fever, sore throat, headache, and vomiting with a severe blistering, peeling, and red skin rash;
  • the first sign of any type of skin rash, no matter how mild;
  • bruising, severe tingling, numbness, pain, muscle weakness;
  • easy bruising or bleeding;
  • mouth sores, trouble...

Read All Potential Side Effects and See Pictures of Nuvigil »

What are the precautions when taking armodafinil (Nuvigil)?

Before taking armodafinil, tell your doctor or pharmacist if you are allergic to it; or to modafinil; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: heart problems (such as enlarged heart, mitral valve problem, chest pain, heart attack, irregular heartbeat), heart problems after taking stimulant drugs such as amphetamines (including chest pain, irregular heartbeat), high blood pressure, liver problems, mental/mood disorders (such as depression, mania, psychosis), personal or family history of regular use/abuse of drugs/alcohol.

Sleep disorders may...

Read All Potential Precautions of Nuvigil »

Last reviewed on RxList: 4/27/2015
This monograph has been modified to include the generic and brand name in many instances.

Nuvigil - User Reviews

Nuvigil User Reviews

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Here is a collection of user reviews for the medication Nuvigil sorted by most helpful. Patient Discussions FAQs

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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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