Cymbalta Side Effects in Females: Sex, Sweating and Sodium
Women on Cymbalta get mostly the same side effects as men, led by nausea, dry mouth and constipation.
By withClaro Editorial · Medically reviewed by Dr. Jason Tan , Consultant Psychiatrist · 2026-11-09 · 9 min read
Key takeaways The most common Cymbalta side effects in women are the same as in men: nausea, dry mouth, constipation, dizziness and sweating. In seven pooled depression trials, about 1 in 7 women on duloxetine stopped it because of side effects. Sexual side effects can happen in women on Cymbalta, though less often than on paroxetine. Low sodium matters more for older women. With other antidepressants, the risk was highest soon after starting; the Cymbalta label gives no timing. Two family physicians on a 2021 podcast were right about nausea, blood pressure and missed doses. On sex and sodium, the data is less simple. On this page
What are the most common Cymbalta side effects in women? Were the doctors right about Cymbalta side effects? Does Cymbalta cause sexual side effects in women? Can Cymbalta affect your period, hot flashes or sweating? Which Cymbalta side effects matter more for older women? Which Cymbalta side effects pass, and when should you call? What should you tell your prescriber about Cymbalta side effects? Cymbalta side effects in females are mostly the same ones men get: nausea first, then dry mouth, constipation, dizziness and heavy sweating. A 2006 pooled analysis of duloxetine (Cymbalta) trials found no meaningful difference between women and men in side effects.
Zachary April and Christopher Tookey are family physicians in Sparta, Wisconsin. They talked through duloxetine and its side effects on an episode of the Driftless HealthCast. This page checks what they said against the FDA label and the trials, with the parts that apply to women first.
What are the most common Cymbalta side effects in women?
Nausea is the most common side effect of duloxetine, and it tends to come first. The FDA label pools women and men in its main table, so there is no women-only list. A 2006 analysis of depression trials by sex found the same side effects at the top for women and men.
Side effect Cymbalta Placebo Nausea 23% 8% Dry mouth 13% 5% Constipation 9% 4% Dizziness 9% 5% Heavy sweating 6% 1%
These figures come from all placebo-controlled trials in the label, for every approved use. The 2006 analysis pooled seven Lilly trials of duloxetine for depression. It found 13.5% of women stopped because of side effects, against 18.6% of men. Blood pressure, pulse, weight and lab results showed no meaningful difference between the sexes.
The starting dose can change how nausea feels. A 2012 Korean trial of 249 adults found nausea peaked in the first week. It was milder in people who started on 30 mg instead of 60 mg. If nausea is hard to live with in week one, tell your prescriber then. The full list is in the common side effects of Cymbalta .
Were the doctors right about Cymbalta side effects?
Mostly yes, but the data on sex and sodium is less simple
We checked ten things the two doctors said about duloxetine. Each claim is set against the FDA label or a published trial. Most of the trials were run by Eli Lilly, which makes Cymbalta.
On nausea, Zachary April told listeners:
sometimes any medicine that messes with serotonin can make you feel a little nauseous, although I notice that tends to get a lot better once people have gotten used to the medicine.
What the doctors said What the research found Does it hold up? Women more often have trouble with arousal, men with desire In the FDA depression trials, women's sexual scores on Cymbalta did not differ from placebo. Men had more trouble reaching orgasm, not lower desire. Women did have more sexual problems than on placebo in a 2005 pooled analysis. Sources differ Sexual problems depend on dose, and going back to the earlier dose often helps The label and a 2007 trial give no breakdown by dose for duloxetine. We did not find data Nausea is common and eases as you get used to it The most common side effect. In a 2012 trial it peaked in week one and then declined. Holds up Constipation, dry mouth and lightheadedness happen All three are among the label's common side effects. Holds up Some people feel more anxious at the start, even on it for anxiety Agitation in 4% on Cymbalta against 2% on placebo. The label gives no timeline for it to pass. Partly Blood pressure and heart rate can go up, so they get checked Average rise under 1 mm Hg. The label says to check blood pressure before and during treatment. No difference by sex. Holds up, the average change is small Akathisia, a restless need to move, can happen Listed among early symptoms to watch on antidepressants. No separate rate for duloxetine. Partly Sodium can drop, usually around three months, in people with risk factors Risk factors match the label. A 2018 Swedish study tied low sodium to newly started antidepressants, not long-term use. It covered citalopram, sertraline, venlafaxine and others, not duloxetine. Women had higher rates in a 2026 German study of antidepressants as a group. Partly. The label gives no timing for duloxetine; for other antidepressants the risk came early Missed doses bring anxiety, zaps and flu-like aches, but are not life-threatening After an abrupt stop, 44.3% on duloxetine had symptoms against 22.9% on placebo, mostly mild or moderate. Holds up The suicide warning is on nearly all antidepressants, and the risk is low The warning covers children, teens and young adults. No rise over age 24, and a drop at 65 and older. Holds up, the risk sits under age 25
The doctors got the everyday picture right: nausea first, a small rise in blood pressure, rough days after missed doses. They simplified two things that matter to women. Sexual side effects in women showed up in one analysis of the trials and not in another. And the label does not say when low sodium appears on Cymbalta. A study of other antidepressants found the risk early. Bring the row that matches your own side effect to your next appointment.
Does Cymbalta cause sexual side effects in women?
It can, though less often than some other antidepressants. A 2005 analysis of four depression trials found women on duloxetine had more sexual problems than on placebo. They had fewer than on paroxetine. The Medication Guide lists lower sex drive and delayed or absent orgasm for women.
The FDA label's own sexual function results did not find this for women, so the sources do not fully agree. A 2007 trial found new sexual problems in 33.3% of people on duloxetine, 48.7% on escitalopram and 16.7% on placebo. That trial did not report results by sex. About two thirds of its participants were women. People whose depression went into remission saw their sexual function improve, whatever they took.
On the episode, Christopher Tookey described the split he sees between men and women:
A lot of times men will have issues with regards to desire or libido
He added that women more often have trouble with arousal. The scores in the FDA label did not show that split: men on Cymbalta had more trouble reaching orgasm, not lower desire. A change you notice in your own sex life still counts. One woman on r/cymbalta described hers easing:
I’m only on 30 mg but my ability to orgasm has come back! I couldn’t for the first month. It’s still harder than before but definitely happy to be somewhat back
The label asks prescribers to check sexual function before treatment starts. Tell your prescriber which part changed, desire, arousal or orgasm, and since when.
Can Cymbalta affect your period, hot flashes or sweating?
Heavy sweating and hot flashes are listed side effects of Cymbalta, while period changes are rare. Heavy sweating affected 6% on Cymbalta against 1% on placebo, and hot flush is listed as a frequent reaction. Menstrual disorder appears in the label only as rare. The label also warns that duloxetine can raise the risk of bleeding. Aspirin and NSAIDs such as ibuprofen, often taken for cramps, add to that risk. Gynecological bleeding is among reports after approval.
Duloxetine has also been tried for menopausal hot flashes. A 2013 open-label study gave it to 19 women with depression around menopause. Daytime hot flashes improved, but nighttime ones did not. With no placebo group and so few women, it can't say whether duloxetine will ease or worsen your own flashes.
In perimenopause, it can be hard to tell a drug's sweating from your own hot flashes. One woman on r/Fibromyalgia, also in perimenopause, wrote:
To deal with the sweating at night, I wear loose cotton pjs and have cooling bed sheets, plus I have a fan blowing on me.
Sweating on its own is a common side effect. Sweating with a fever, muscle twitching, agitation or confusion can be a sign of serotonin syndrome. The label says to get medical care straight away. Note when the sweating started compared with your first dose, and whether it comes by day, at night or both. If your appetite or the way your clothes fit has changed, see whether Cymbalta causes weight gain .
Which Cymbalta side effects matter more for older women?
Low sodium is the side effect to know about after 65. The label says older people, people on diuretics and people who are dehydrated are at higher risk. Signs include headache, trouble concentrating, memory problems, confusion, weakness and unsteadiness that can lead to falls.
Women seem to be more exposed. A 2026 German study covered more than 151,000 women and 92,000 men treated as psychiatric inpatients from 1993 to 2016. Low sodium as a drug reaction was recorded almost three times as often in women as in men. The study pooled antidepressants of several classes, including SSRIs, tricyclics and mirtazapine, and its summary gives no figure for duloxetine alone.
Zachary April said about low sodium:
Usually if we're going to see this we might see it at about the three month mark
The Cymbalta label gives no timing for low sodium. A 2018 Swedish study of 14,359 people hospitalized with low sodium found the risk with newly started antidepressants, not long-term use. It covered citalopram, sertraline, venlafaxine, tricyclics and mirtazapine, not duloxetine.
Older women also clear duloxetine more slowly. Women aged 65 to 77 had about 25% higher blood levels than women aged 32 to 50. Their half-life was about 4 hours longer. The label says no dose change is needed based on age alone.
If you are over 65 or take a diuretic, ask whether a sodium check makes sense in the first weeks. Ask for a blood pressure check too.
Which Cymbalta side effects pass, and when should you call?
Most early side effects of antidepressants ease within the first weeks, while a few tend to last and are worth raising.
Side effects that often pass include nausea, an upset stomach, headache, sleep changes and feeling restless. If sexual side effects, weight change or feeling emotionally flat appear, they tend to stay while you take the medication. A change of dose or medication often helps with these, so mention them instead of putting up with them.
Call 911 or 988 now if you feel you might act on thoughts of suicide, or you have a seizure, a very high temperature with stiff muscles, or swelling of the face or throat.
Call your prescriber the same day, or get urgent care, if you notice:
new or worse thoughts of suicide or self-harm, especially early on, after a dose change, or in people under 25 agitation, heavy sweating, fever, muscle twitching or confusion, which can be signs of serotonin syndrome unusual bleeding or bruising, black or tarry stools, or vomiting blood a sudden burst of energy, little need for sleep, racing thoughts or unusual risk-taking, especially if you or a close relative has bipolar disorder headache, confusion, weakness or unsteadiness, especially if you are older (a sign of low sodium) eye pain, changes in vision, or swelling or redness in or around the eye fainting, or a fast or irregular heartbeat Hormonal changes across the menstrual cycle, pregnancy and menopause can change how a medication feels. Any side effect that bothers you is reason enough to bring it up.
Medical review Medically reviewed by Dr. Jason Tan, Consultant Psychiatrist, on 27 October 2026, this section only. Next review: 27 October 2027.
What should you tell your prescriber about Cymbalta side effects?
Tell your prescriber what changed, when it started and how much it gets in your way. That helps them weigh waiting against a different dose or a different medication. Your cycle, menopause, hormone therapy and pregnancy plans matter too, because hormones can shift how side effects feel.
Each side effect, and the week it started. Your dose and the time of day you take it. Any change in desire, arousal or orgasm, even if it feels awkward to say. Where you are in your cycle, or whether you're in perimenopause or menopause. Heavier or longer periods, spotting between periods or easy bruising. Painkillers you take for cramps. Hormone therapy or birth control you use. Whether you're pregnant, breastfeeding or planning a pregnancy. Diuretics and other medicines you take. Dizziness, unsteadiness or any falls. Blood pressure readings, if you check at home. If you're having thoughts of harming yourself, contact emergency services or a crisis line straight away. In the US, call or text 988. In the UK, call Samaritans on 116 123. Elsewhere, find a crisis line near you .
Download on the App Store Sweating, sleep changes and a dip in sex drive are easy to forget by the time you see your prescriber. The withClaro app lets you log mood, energy, sleep and side effects each day, linked to your dose, and turns it into a report for your prescriber.
Frequently asked questions What are the negatives of Cymbalta? Nausea, dry mouth, constipation, dizziness and sweating are the most common, and missed doses can bring dizziness and other symptoms. Note which of these you have and when each started.
Do sexual side effects from Cymbalta go away? They often last while you take it, though some people find they ease. A different dose or medication often helps, so raise it at your next visit.
Is Cymbalta a stimulant? No. Duloxetine is a serotonin and norepinephrine reuptake inhibitor, an antidepressant, though some people feel a little wired on it at first. If it keeps you awake, tell your prescriber what time you take it and how your sleep has changed.
Does duloxetine cause orthostatic hypotension? It can. The label warns of a drop in blood pressure on standing, falls and fainting. These are most likely in the first week or after a dose increase, and the risk of falls rises with age. If you feel faint when you stand up or have a fall, tell your prescriber and note when it happened.
Can Cymbalta cause a rash? Yes, though rarely. Rash is listed among reports after approval, and the label warns of rare severe skin reactions, including Stevens-Johnson syndrome. If a rash blisters or peels, or your mouth or eyes are sore, contact your prescriber or urgent care the same day.
Related articles
Sources CYMBALTA (duloxetine) prescribing information and Medication Guide, Eli Lilly, FDA-approved labeling, revised August 2023 Stewart DE, et al. Duloxetine in the treatment of major depressive disorder: comparisons of safety and tolerability in male and female patients. Journal of Affective Disorders, 2006 Driftless HealthCast: Duloxetine and the SNRI's, with Christopher Tookey, MD, and Zachary April, DO, December 2021 Lee MS, et al. The effect of initial duloxetine dosing strategy on nausea in Korean patients with major depressive disorder. Psychiatry Investigation, 2012 Delgado PL, et al. Sexual functioning assessed in 4 double-blind placebo- and paroxetine-controlled trials of duloxetine for major depressive disorder. Journal of Clinical Psychiatry, 2005 Clayton A, et al. Changes in sexual functioning associated with duloxetine, escitalopram, and placebo in the treatment of patients with major depressive disorder. Journal of Sexual Medicine, 2007 Farmand S, et al. Differences in associations of antidepressants and hospitalization due to hyponatremia. American Journal of Medicine, 2018 Seifert J, et al. A 24-year pharmacovigilance study on sex differences in adverse drug reactions to antidepressant drugs. Naunyn-Schmiedeberg's Archives of Pharmacology, 2026 Perahia DG, et al. Symptoms following abrupt discontinuation of duloxetine treatment in patients with major depressive disorder. Journal of Affective Disorders, 2005 r/cymbalta: Unable to orgasm.. Wellbutrin option? Freeman MP, et al. Duloxetine for major depressive disorder and daytime and nighttime hot flashes associated with the menopausal transition. Maturitas, 2013 r/Fibromyalgia: does cymbalta make you super sweaty??? Claro articles are for self-monitoring and educational purposes only. They are not a medical device, therapist, or diagnostic tool, and do not replace care from your prescribing clinician. If you are in crisis, contact your care team, emergency services, the Samaritans (UK: 116 123), or the Crisis Text Line (US: text HOME to 741741).
