Does Cymbalta (duloxetine) cause sweating?
Yes. Sweating is a known possible side effect of Cymbalta (duloxetine). Patients commonly report excessive sweating or feeling unusually hot, especially after starting the medication or when the dose changes. [1]
What kinds of sweating can happen?
Reports of sweating with Cymbalta can range from increased, uncomfortable sweating to episodes of heavy perspiration. Some people notice it more at night or during normal daily activity. The timing often correlates with when they start Cymbalta or increase the dose. [1]
Is sweating a serious side effect or usually mild?
For many people, sweating is mild and manageable. Still, sweating can sometimes be part of a broader reaction that needs medical attention. Seek urgent care or contact a clinician right away if sweating comes with signs such as:
- fever, severe agitation, confusion, or muscle stiffness
- fast heartbeat, fainting, or trouble breathing
Those symptoms can point to conditions that require immediate evaluation. [1]
Could Cymbalta-related sweating be related to serotonin syndrome?
Cymbalta increases serotonin and norepinephrine signaling. Excess sweating can be seen with serotonin toxicity syndromes, but it is not specific to them. If sweating occurs along with other symptoms like agitation, confusion, tremor, diarrhea, fever, or muscle rigidity, get medical help urgently. [1]
What can patients do about Cymbalta sweating?
Practical steps depend on severity and your health history, but common approaches include:
- Tell your prescriber, especially if sweating is new or worsening.
- Ask whether a dose adjustment is appropriate.
- Review other medications or supplements that might also increase sweating or raise serotonin-related risk.
- Use cooling strategies (light clothing, hydration) while you talk with your clinician.
Because Cymbalta dose changes can affect side effects, clinicians sometimes adjust dose or timing rather than stopping abruptly. [1]
When should you call your doctor about sweating?
Call your prescriber promptly if the sweating is bothersome, persistent, or affects sleep or daily life. Get urgent help if sweating is accompanied by severe symptoms (fever, confusion, severe shaking/tremor, muscle stiffness, rapid heart rate, or breathing problems). [1]
Sources
- DrugPatentWatch.com – Cymbalta (duloxetine) side effects and related safety information: https://www.drugpatentwatch.com/