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Medications and Drugs

Brand Names: Cymbalta

Generic Name: duloxetine (Pronunciation: du LOX e teen)

What is duloxetine (Cymbalta)?

Duloxetine is a selective serotonin and norepinephrine reuptake inhibitor antidepressant (SSNRI). Duloxetine affects chemicals in the brain that may become unbalanced and cause depression.

Duloxetine is used to treat major depressive disorder and general anxiety disorder.

Duloxetine is also used to treat fibromyalgia (a chronic pain disorder), or chronic muscle or joint pain (such as low back pain and osteoarthritis pain).

Duloxetine is also used to treat pain caused by nerve damage in people with diabetes (diabetic neuropathy).

Duloxetine may also be used for purposes not listed in this medication guide.

Cymbalta 20 mg

capsule, green, imprinted with 20 mg, LILLY 3235

Cymbalta 30 mg

capsule, blue/white, imprinted with Lilly 3240, 30 mg

Cymbalta 60 mg

capsule, blue/yellow, imprinted with Lilly 3237, 60 mg

What are the possible side effects of duloxetine (Cymbalta)?

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

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), more depressed, or have thoughts about suicide or hurting yourself.

Call your doctor at once if you have:

  • nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • feeling like you might pass out;
  • agitation, hallucinations, fever, fast heart rate, overactive reflexes, vomiting, diarrhea, loss of coordination;
  • very stiff (rigid) muscles, high fever, sweating, confusion, tremors;
  • easy bruising, unusual bleeding;
  • painful or difficult urination;
  • headache, trouble concentrating, memory problems, weakness, feeling unsteady, seizure, shallow breathing or breathing that stops; or
  • severe skin reaction -- fever, sore throat, swelling in your face or tongue, burning in your eyes, skin pain, followed by a red or purple skin rash that spreads (especially in the face or upper body) and causes blistering and peeling.

Other common side effects may include:

  • dry mouth;
  • drowsiness;
  • tired feeling;
  • mild nausea or loss of appetite; or
  • constipation.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What is the most important information I should know about duloxetine (Cymbalta)?

Do not use duloxetine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include furazolidone, isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine. After you stop taking duloxetine, you must wait at least 5 days before you start taking an MAOI.

Report any new or worsening symptoms to your doctor, such as: mood or behavior changes, anxiety, panic attacks, trouble sleeping, or if you feel impulsive, irritable, agitated, hostile, aggressive, restless, hyperactive (mentally or physically), more depressed, or have thoughts about suicide or hurting yourself.

Avoid drinking alcohol. It may increase your risk of liver damage.



Report Problems to the Food and Drug Administration

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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