thoughtscape NP Psychiatry · Patient education
Duloxetine
Cymbalta • Drizalma Sprinkle
An SNRI used for depression, anxiety, and certain chronic pain conditions. Your treatment goal determines the plan.
Draft for review · Clinical content has not been revalidated for this website.
Pain treatment does not require depression. The dose limit for pain is different from the psychiatric maximum.
What it is used for
Adults: depression, generalized anxiety, diabetic nerve pain, fibromyalgia, and chronic muscle, joint, or back pain.
Pediatric approval depends on product and condition: GAD from age 7; Cymbalta fibromyalgia from age 13. Not approved for pediatric depression.
How it works
Slows serotonin and norepinephrine reuptake. Changes in these signals are thought to help mood, anxiety, and the nervous system's pain control.
It does not guarantee pain relief or repair every cause of pain. The same signaling changes can also cause nausea, sweating, or sexual effects.
What to expect over time
FIRST DAYS
Nausea, dizziness, or sleep changes may appear first. Food may help nausea; call about persistent vomiting or poor intake.
OVER WEEKS
Mood and anxiety improvement usually takes several weeks. Pain may improve earlier. Timing and degree of benefit vary.
AT REVIEW
Track function as well as symptoms. Review benefit, side effects, and trial length before a dose increase; more is not always better.
Taking your medication
Take your prescribed schedule consistently, with or without food. Some doses are divided. Ask before changing timing or increasing the dose.
Swallow Cymbalta whole. Drizalma may be opened onto a tablespoon of applesauce and swallowed at once without chewing. Check other products first.
Never crush pellets. Rise slowly; report falls or fainting. Do not drive while impaired. Discuss alcohol: heavy drinking raises the risk of serious liver injury.
When to get help
Emergency: seizure, collapse, breathing trouble, major bleeding, or immediate self-harm danger. Fever with confusion and muscle stiffness needs urgent care.
Stop and get help: yellow skin/eyes or other signs of liver injury; blistering or peeling rash or mouth sores. Report dark urine or upper belly pain promptly.
Call promptly: mood worsening, suicidal thoughts, unusual high energy, confusion, or urinary difficulty. Inability to urinate or acute eye pain needs urgent care.
Early side effects
Nausea, appetite loss, dry mouth, constipation, sweating, dizziness, or sleep changes may occur. Food, dental care, and a bowel plan can help.
Other effects to discuss
Discuss sexual effects, weight changes, or feeling emotionally flat. These deserve review; they do not automatically mean the dose is too high.
What to keep track of
Keep blood-pressure and follow-up checks. Review mood, falls, weight, and sexual effects; monitor growth in children and glucose with diabetes. Liver tests, sodium, and ECG depend on risks or symptoms. Blood pressure can rise, but standing pressure can also fall.
Before you start
Discuss bipolar disorder, suicidal thoughts, liver or kidney disease, alcohol, blood pressure, heart disease, stroke, seizures, bleeding, narrow-angle eye problems, low sodium, and trouble urinating. Duloxetine is generally avoided with chronic liver disease, substantial alcohol use, or severe kidney impairment. List every medicine and supplement. Tell the prescriber about pregnancy, breastfeeding, and any change in smoking; do not adjust doses yourself.
Medicines & interactions
MAOIs, linezolid, and methylene blue
Never combine with an antidepressant MAOI: wait at least 14 days after it before duloxetine, and 5 days after duloxetine before an MAOI. Linezolid or IV methylene blue needs a separate supervised plan.
Other serotonin medicines
Review antidepressants, tramadol, migraine triptans, dextromethorphan cough remedies, lithium, buspirone, stimulants, and St. John's wort. Combinations can increase serotonin-syndrome risk.
Bleeding and liver risks
Check aspirin, ibuprofen, naproxen, and blood thinners; bleeding risk increases. Discuss all alcohol use. Ask which pain reliever is appropriate rather than automatically substituting one.
Medicines affecting drug levels
Fluvoxamine and ciprofloxacin can raise duloxetine levels and are generally avoided. Review CYP2D6-related medicines, including some antidepressants, heart drugs, and atomoxetine. Do not combine with thioridazine.
Everyday tips
Refill before running out. Missed doses can trigger dizziness, nausea, or electric-shock sensations.
Track a few practical goals: walking, sleep, daily tasks, mood, or worry. Therapy and activity plans can complement treatment.
Tell your doctor, dentist, and pharmacist that you take duloxetine before new medicines or procedures.
Speak up about side effects early. Do not push through severe symptoms or change the prescription on your own.
Your questions, answered
What if I miss a dose?
Take it when remembered unless the next dose is nearly due; then skip it. Never double. If doses are repeatedly missed or withdrawal symptoms appear, contact the prescriber.
Why not stop suddenly?
Withdrawal can include dizziness, nausea, shock-like sensations, anxiety, or poor sleep. Plan a gradual taper; some people need longer. Do not crush pellets or improvise a bead-counting schedule.
Pregnant or breastfeeding?
Contact your prescriber to weigh treatment and untreated illness. Late exposure may affect a newborn's adaptation or increase bleeding after delivery. It enters breast milk; discuss feeding and watch infant alertness, feeding, and growth.
What if too much is taken?
Overdose can be dangerous. In the US call Poison Help, 1-800-222-1222, immediately. Call 911 for seizure, collapse, breathing trouble, or inability to wake. Elsewhere use local emergency services.
Storage & safety
Store at the labeled room temperature in a tightly closed container, secured away from children and pets. Never share; ask your pharmacist about disposal of unused medicine.
About this information
For general information only; not a substitute for individualized medical advice. This sheet does not cover every risk or interaction. Ask your prescriber or pharmacist before changing how you take this medication.
Sources
Educational inclusion does not mean this medication or its indications are treated at this practice. Review the guide for your exact product with your prescriber or pharmacist.