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What is duloxetine?
Duloxetine is a selective serotonin and norepinephrine reuptake inhibitor antidepressant (SSNRI). Duloxetine affects chemicals in the brain that may be unbalanced in people with depression.
Duloxetine is used to treat major depressive disorder in adults. It is also used to treat general generalized anxiety disorder in adults and children who are at least 7 years old.
Duloxetine is also used in adults 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 adults with diabetes (diabetic neuropathy).
Do not take this medicine within 5 days before or 14 days after you have used an MAO inhibitor, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.
Some young people have thoughts about suicide when first taking an antidepressant. Stay alert to changes in your mood or symptoms. Report any new or worsening symptoms to your doctor.
Do not stop using duloxetine without first talking to your doctor.
Before taking this medicine
You should not use duloxetine if you are allergic to it.
Do not take duloxetine within 5 days before or 14 days after you have used an MAO inhibitor, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine. A dangerous drug interaction could occur.
Some medicines can interact with duloxetine and cause a serious condition called serotonin syndrome.Be sure your doctor knows if you also take stimulant medicine, opioid medicine, herbal products, or medicine for depression, mental illness, Parkinson's disease, migraine headaches, serious infections, or prevention of nausea and vomiting. Ask your doctor before making any changes in how or when you take your medications.
To make sure duloxetine is safe for you, tell your doctor if you have ever had:
liver or kidney disease;
seizures or epilepsy;
a bleeding or blood clotting disorder;
high blood pressure;
bipolar disorder (manic depression); or
drug addiction or suicidal thoughts.
Some young people have thoughts about suicide when first taking an antidepressant. Your doctor will need to check your progress at regular visits while you are using duloxetine. Your family or other caregivers should also be alert to changes in your mood or symptoms.
It is not known whether duloxetine will harm an unborn baby. However, duloxetine may cause problems in a newborn if you take the medicine during the third trimester of pregnancy. Tell your doctor if you are pregnant or plan to become pregnant while using this medicine.
If you are pregnant, your name may be listed on a pregnancy registry. This is to track the outcome of the pregnancy and to evaluate any effects of this medicine on the baby.
Duloxetine can pass into breast milk, but effects on the nursing baby are not known. Tell your doctor if you are breast-feeding.
Get emergency medical help if you have signs of an allergic reaction to duloxetine: 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:
a light-headed feeling, like you might pass out;
vision changes, eye pain or swelling, eye redness;
easy bruising, unusual bleeding;
painful or difficult urination;
a manic episode - racing thoughts, increased energy, reckless behavior, feeling extremely happy or irritable, talking more than usual, severe problems with sleep;
liver problems - right-sided upper stomach pain, itching, dark urine, jaundice (yellowing of the skin or eyes);
low levels of sodium in the body - headache, confusion, slurred speech, severe weakness, vomiting, loss of coordination, feeling unsteady; 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.
Seek medical attention right away if you have symptoms of serotonin syndrome, such as: agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.
Older adults may be more sensitive to the side effects of this medicine.
Common duloxetine side effects may include:
nausea, constipation, loss of appetite, weight loss; or