DULOXETINE- duloxetine capsule, delayed release 


Medication Guide

Duloxetine Delayed-Release Capsules USP


Read this Medication Guide before you start taking duloxetine and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or treatment.

Talk to your healthcare provider about:

  • all risks and benefits of treatment with antidepressant medicines
  • all treatment choices for depression or other serious mental illness

What is the most important information I should know about antidepressant medicines, depression, other serious mental illnesses, and suicidal thoughts or actions?

1. Duloxetine and other antidepressant medicines may increase suicidal thoughts or actions in some children, teenagers, or young adults within the first few months of treatment or when the dose is changed.

2. Depression and other serious mental illnesses are the most important causes of suicidal thoughts or actions. Some people may have a particularly high risk of having suicidal thoughts or actions.These include people who have (or have a family history of) bipolar illness (also called manic-depressive illness).

3. How can I watch for and try to prevent suicidal thoughts and actions?

  • Pay close attention to any changes in mood, behavior, actions, thoughts, or feelings, especially sudden changes. This is very important when an antidepressant medicine is started or when the dose is changed.
  • Call your healthcare provider right away to report new or sudden changes in mood, behavior, thoughts, or feelings.
    • Keep all follow-up visits with your healthcare provider as scheduled. Call your healthcare provider between visits as needed, especially if you have concerns about symptoms.

Call your healthcare provider right away if you have any of the following symptoms or feelings, especially if they are new, worse, or worry you. In an emergency, call 911.

  • attempts to commit suicide
  • acting on dangerous impulses
  • acting aggressive, being angry, or violent
  • thoughts about suicide or dying
  • new or worse depression
  • new or worse anxiety
  • panic attacks
  • feeling very agitated or restless
  • new or worse irritability
  • trouble sleeping
  • an extreme increase in activity or talking (mania)
  • other unusual changes in behavior or mood

What else do I need to know about antidepressant medicines?

  • Never stop an antidepressant medicine without first talking to a healthcare provider. Stopping an antidepressant medicine suddenly can cause other symptoms.
  • Antidepressants are medicines used to treat depression and other illnesses. It is important to discuss all the risks of treating depression and also the risks of not treating it. Patients should discuss all treatment choices with your healthcare provider, not just the use of antidepressants.
  • Antidepressant medicines have other side effects. Talk to your healthcare provider about the side effects of the medicine prescribed for you or your family member.
  • Antidepressant medicines can interact with other medicines. Know all of the medicines that you or your family member takes. Keep a list of all medicines to show your healthcare provider. Do not start new medicines without first checking with your healthcare provider.

What is duloxetine?

Duloxetine is a prescription medicine used to treat a certain type of depression called Major Depressive Disorder (MDD). Duloxetine belongs to a class of medicines known as SNRIs (or serotonin-norepinephrine reuptake inhibitors).

Duloxetine is also used to treat or manage:

  • Generalized Anxiety Disorder (GAD)
  • Diabetic Peripheral Neuropathic Pain (DPNP)
  • Fibromyalgia (FM)
  • Chronic Musculoskeletal Pain

Who should not take Duloxetine?

Do Not take Duloxetine if you:

  • take a Monoamine Oxidase Inhibitor (MAOI). Ask your healthcare provider or pharmacist if you are not sure if you take an MAOI, including the antibiotic linezolid or intravenous methylene blue.
    • Do not take an MAOI within 5 days of stopping duloxetine unless directed to do so by your healthcare provider.
    • Do not start duloxetine if you stopped taking an MAOI in the last 14 days unless directed to do so by your healthcare provider.

People who take duloxetine close in time to an MAOI may have a serious problem called Serotonin Syndrome (see “What are the possible side effects of duloxetine?”).

What should I tell my healthcare provider before taking duloxetine?

Before starting duloxetine, tell your healthcare provider if you:

  • have heart problems or high blood pressure
  • have diabetes (duloxetine treatment makes it harder for some people with diabetes to control their blood sugar)
  • have liver problems
  • have kidney problems
  • have glaucoma
  • have or had seizures or convulsions
  • have bipolar disorder or mania
  • have low sodium levels in your blood
  • have delayed stomach emptying
  • have or had bleeding problems
  • are pregnant or plan to become pregnant. Duloxetine may harm your unborn baby. Talk to your healthcare provider about the risk to your unborn baby if you take duloxetine during pregnancy.
  • Tell your healthcare provider right away if you become pregnant or think you are pregnant during treatment with duloxetine.
  • are breastfeeding or plan to breastfeed. Duloxetine passes into your breast milk and may harm your baby. Talk to your healthcare provider about the best way to feed your baby while taking duloxetine.

Tell your healthcare provider about all the medicines that you take,including prescription and over-the-counter medicines, vitamins, and herbal supplements. Duloxetine and some medicines may interact with each other, may not work as well, or may cause serious side effects.

Especially tell your healthcare provider if you take:

  • triptans used to treat migraine headache
  • medicines used to treat mood, anxiety, psychotic or thought disorders, including tricyclics, lithium, buspirone, SSRIs, SNRIs or MAOIs
  • tramadol and fentanyl
  • amphetamines
  • cimetidine
  • the antibiotics ciprofloxacin, enoxacin
  • medicine to treat irregular heart rate (like propafenone, flecainide, quinidine)
  • theophylline
  • the blood thinner warfarin (Coumadin, Jantoven)
  • non-steroidal anti-inflammatory drug (NSAID)(like ibuprofen, naproxen or aspirin).
  • over-the-counter supplements such as tryptophan or St. John’s Wort
  • thioridazine (Mellaril). Mellaril together with duloxetine can cause serious heart rhythm problems or sudden death.

Ask your healthcare provider for a list of these medicines if you are not sure.

Do not take duloxetine with any other medicine that contain duloxetine.

How should I take Duloxetine?

  • Take duloxetine exactly as your healthcare provider tells you to take it. Your healthcare provider may need to change the dose of duloxetine until it is the right dose for you.
  • Swallow Duloxetine Delayed-Release Capsule USP whole. Do not chew or crush Duloxetine Delayed-Release Capsule USP.
  • Do not open the capsule and sprinkle on food or mix with liquids. Opening the capsule may affect how well duloxetine works.
  • Duloxetine may be taken with or without food.
  • If you miss a dose of duloxetine, take the missed dose as soon as you remember. If it is almost time for the next dose, skip the missed dose and take your next dose at the regular time. Do not take two doses of duloxetine at the same time.
  • If you take too much duloxetine, call your healthcare provider or poison control center at 1-800-222-1222 right away, or get emergency treatment.
  • When switching from another antidepressant to duloxetine your healthcare provider may want to lower the dose of the initial antidepressant first to potentially avoid side effects.

What should I avoid while taking Duloxetine?

  • Duloxetine can cause sleepiness or may affect your ability to make decisions, think clearly, or react quickly. You should not drive, operate heavy machinery, or do other dangerous activities until you know how duloxetine affects you.
  • Use of duloxetine concomitantly with heavy alcohol intake may be associated with severe liver injury. Avoid heavy alcohol use while taking duloxetine.

What are the possible side effects of duloxetine?

Duloxetine may cause serious side effects, including: See “What is the most important information I should know about duloxetine?”

Common possible side effects in people who take duloxetine include:

1. liver damage. Symptoms may include:

  • itching
  • right upper abdominal pain
  • dark urine
  • yellow skin or eyes
  • enlarged liver
  • increased liver enzymes

2. changes in blood pressure and falls.Monitor your blood pressure before starting and throughout treatment. Duloxetine may:

  • increase your blood pressure.
  • decrease your blood pressure when standing and cause dizziness or fainting, mostly when first starting duloxetine or when increasing the dose.
  • increase risk of falls, especially in elderly.

3. Serotonin Syndrome: This condition can be life-threatening and symptoms may include:

  • agitation, hallucinations, coma or other changes in mental status
  • coordination problems or muscle twitching (overactive reflexes)
  • racing heartbeat, high or low blood pressure
  • sweating or fever
  • nausea, vomiting, or diarrhea
  • muscle rigidity
  • dizziness
  • flushing
  • tremor
  • seizures

4. abnormal bleeding:Duloxetine and other antidepressant medicines may increase your risk of bleeding or bruising, especially if you take the blood thinner warfarin (Coumadin, Jantoven), a non-steroidal anti-inflammatory drug (NSAIDs, like ibuprofen or naproxen), or aspirin.

5. severe skin reactions:Duloxetine may cause serious skin reactions that may require stopping its use. This may need to be treated in a hospital and may be life-threatening. Call your healthcare provider right away or get emergency help if you have skin blisters, peeling rash, sores in the mouth, hives or any other allergic reactions.

6. discontinuation symptoms:Do not stop duloxetine without first talking to your healthcare provider. Stopping duloxetine too quickly or changing from another antidepressant too quickly may result in serious symptoms including:

  • anxiety
  • irritability
  • feeling tired or problems sleeping
  • headache
  • sweating
  • dizziness
  • electric shock-like sensations
  • vomiting or nausea
  • diarrhea

7. manic episodes:

  • greatly increased energy
  • severe trouble sleeping
  • racing thoughts
  • reckless behavior
  • unusually grand ideas
  • excessive happiness or irritability
  • talking more or faster than usual

8. visual problems:

  • eye pain
  • changes in vision
  • swelling or redness in or around the eye

Only some people are at risk for these problems. You may want to undergo an eye examination to see if you are at risk and receive preventative treatment if you are.

9. seizures or convulsions

10. low salt (sodium) levels in the blood.Elderly people may be at greater risk for this. Symptoms may include:

  • headache
  • weakness or feeling unsteady
  • confusion, problems concentrating or thinking or memory problems

11. problems with urination. Symptoms may include:

  • decreased urine flow
  • unable to pass any urine

12. sexual problems (dysfunction).Taking serotonin and norepinephrine reuptake inhibitors(SNRIs), including duloxetine, may cause sexual problems.
Symptoms in males may include:

  • delayed ejaculation or inability to have an ejaculation
  • decreased sex drive
  • problems getting or keeping an erection

Symptoms in females may include:

  • decreased sex drive
  • delayed orgasm or inability to have an orgasm

Talk to your healthcare provider if you develop any changes in your sexual function or if you have any questions or concerns about sexual problems during treatment with duloxetine.There may be treatments your healthcare provider can suggest.

The most common side effects of duloxetine include:

  • nausea
  • dry mouth
  • sleepiness
  • fatigue
  • constipation
  • loss of appetite
  • increased sweating
  • dizziness

Common possible side effects in children and adolescents who take duloxetine include:

  • nausea
  • decreased weight
  • dizziness

Side effects in adults may also occur in children and adolescents who take duloxetine. Children and adolescents should have height and weight monitored during treatment.

Tell your healthcare provider if you have any side effect that bothers you or that does not go away.

These are not all the possible side effects of duloxetine. For more information, ask your healthcare provider or pharmacist.

Call your doctor for medical advice about side effects. You may report side effects to 1-800-FDA-1088.

How should I store Duloxetine Delayed-Release Capsules USP?

Store Duloxetine Delayed-Release Capsules USP at room temperature between 68°F to 77°F (20°C to 25°C).

Keep duloxetine and all medicines out of the reach of children.

General information about the safe and effective use of duloxetine.

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use duloxetine for a condition for which it was not prescribed. Do not give duloxetine to other people, even if they have the same symptoms that you have. It may harm them.

This Medication Guide summarizes the most important information about duloxetine. If you would like more information, talk with your healthcare provider. You may ask your healthcare provider or pharmacist for information about duloxetine that is written for healthcare professionals.

What are the ingredients in Duloxetine Delayed-Release Capsules USP?

Active ingredient: duloxetine hydrochloride

Inactive ingredients:

FD&C Blue No.2, gelatin, hypromellose, hydroxypropyl cellulose, sugar spheres, hypromellose phthalates, talc, titanium dioxide, and triethyl citrate. The 20 and 60 mg capsules also contain iron oxide yellow. The printing ink contains shellac, dehydrated alcohol, isopropyl alcohol, butyl alcohol, propylene glycol, strong ammonia solution, potassium hydroxide, black iron oxide (for 20 mg and 30 mg strengths), titanium dioxide and purified water.

This Medication Guide has been approved by the U.S. Food and Drug Administration.

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Revised: 3/2024