Drug information provided by: IBM Micromedex
It is important that your doctor check your progress at regular visits to allow for changes in your dose and to help prevent any unwanted effects.
Do not take duloxetine with a monoamine oxidase (MAO) inhibitor (eg, isocarboxazid [Marplan®], phenelzine [Nardil®], selegiline [Eldepryl®], or tranylcypromine [Parnate®]) in the past 2 weeks. Do not start taking an MAO inhibitor within 5 days of stopping duloxetine. If you do, you may develop confusion, agitation, restlessness, stomach or intestinal symptoms, sudden high body temperature, extremely high blood pressure, or severe convulsions. Ask your doctor if you are not sure if you take an MAOI, including linezolid (Zyvox®) or methylene blue injection.
Duloxetine may cause some teenagers and young adults to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed. Some people may have trouble sleeping, get upset easily, have a big increase in energy, or start to act reckless. If you or your caregiver notice any of these unwanted effects, tell your doctor right away. Let the doctor know if you or anyone in your family has bipolar disorder (manic-depressive) or has tried to commit suicide.
Check with your doctor right away if you have pain or tenderness in the upper stomach, pale stools, dark urine, loss of appetite, nausea, vomiting, or yellow eyes or skin. These could be symptoms of a serious liver problem.
Make sure your doctor knows about all the other medicines you are using. Duloxetine may cause serious conditions called serotonin syndrome or neuroleptic malignant syndrome (NMS)-like reactions if taken with certain medicines such as buspirone (Buspar®), fentanyl (Abstral®, Duragesic®), lithium (Eskalith®, Lithobid®), tryptophan, St. John's wort, amphetamines, or some pain medicines (eg, tramadol [Ultram®], sumatriptan [Imitrex®], zolmitriptan [Zomig®], or rizatriptan [Maxalt®]). Check with your doctor first before taking any other medicines.
This medicine may increase your risk for bleeding problems. Make sure your doctor knows if you are also taking other medicines that thin the blood, such as aspirin, NSAID pain medicines (eg, ibuprofen, naproxen, Advil®, Aleve®, Celebrex®, or Motrin®) or warfarin (Coumadin®).
Serious skin reactions (eg, erythema multiforme, Stevens-Johnson syndrome) can occur during treatment with this medicine. Check with your doctor right away if you have blistering, peeling, or loosening of the skin, chills, cough, diarrhea, itching, joint or muscle pain, red irritated eyes, red skin lesions, often with a purple center, sore throat, sores, ulcers, or white spots in the mouth or on the lips, or unusual tiredness or weakness while you are using this medicine.
Do not suddenly stop taking this medicine without checking first with your doctor. If you have been instructed to stop taking duloxetine, ask your doctor how to slowly decrease the dose. This will decrease your chance of having withdrawal symptoms such as dizziness, nausea, headaches, vomiting, increased sweating, irritability, nightmares, trouble with sleeping, or prickling or tingling feelings.
This medicine may affect blood sugar levels. If you are diabetic and notice a change in the results of your blood or urine sugar tests, check with your doctor.
This medicine may cause blurred vision, dizziness, drowsiness, trouble with thinking, or trouble with controlling body movements, which may lead to falls, fractures, or other injuries. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are not alert or able to see clearly. You may also feel lightheaded or you may fall or faint when getting up suddenly from a lying or sitting position, so get up slowly. If these symptoms are bothering you or keeping you from doing your daily activities, tell your doctor right away..
You will need to measure your blood pressure before starting this medicine and while you are using it. If you notice any change to your recommended blood pressure, call your doctor right away. If you have questions about this, talk to your doctor.
Hyponatremia (low sodium in the blood) may occur with this medicine. Check with your doctor right away if you have confusion, decreased urine output, difficulty concentrating, fast or irregular heartbeat, headaches, memory problems, nausea or vomiting, swelling of the face, ankles, or hands, trouble breathing, or unusual tiredness or weakness.
This medicine may cause sexual problems. Check with your doctor right away if you have decreased interest in sexual intercourse, inability to have or keep an erection, or loss in sexual ability, desire, drive, or performance.
Avoid smoking while you are using this medicine. If you have any questions about this, check with your doctor.