Celexa and Night Sweats: When to Request a Review

You wake at 3 am with the sheets damp, your T-shirt clinging, and the pillow turned over for the second time. If you started Celexa (citalopram) a few weeks ago, or recently had the dose increased, it is natural to wonder whether the two are connected. Often they are. Increased sweating, including night sweats, is one of the more commonly reported side effects of citalopram and other SSRI antidepressants.

But “common” is not the same as “something you just have to live with,” and night sweats are not always caused by the medicine. This guide focuses on one practical decision: when is it worth asking your prescriber for a review, and how do you make that review count?

Why Celexa Can Cause Night Sweats

Citalopram increases the availability of serotonin, a chemical messenger that helps regulate mood. Serotonin also influences the hypothalamus, the part of the brain that acts as the body’s thermostat, and the nerves that control sweat glands. When serotonin signalling shifts, the thermostat can become more sensitive, triggering sweating at temperatures that would not normally cause it.

Night is when many people notice it most. Body temperature naturally rises and falls during sleep cycles, bedding traps heat, and you are unaware of the gradual build-up until you wake drenched. Some people sweat during the day too, especially on the face, scalp, neck and chest.

What usually happens over time

• Sweating can start within the first weeks of treatment or after a dose increase.
• For some people it lessens over the following weeks as the body adjusts.
• For others it persists for as long as they take the medicine, often at a similar level.
• Sweating may be related to dose for some people, though not everyone notices a clear link.

Knowing which pattern you are in is a large part of deciding what to do.

The Review-Readiness Checklist

Answer each question honestly. The more “yes” answers you have, the stronger the case for asking your prescriber for a review rather than waiting until your next routine appointment.

If you answered yes to question 6, 7 or 8, contact your prescriber soon, whatever your other answers. Question 6 matters because stopping citalopram suddenly can cause discontinuation symptoms and risks your mood. Questions 7 and 8 matter because they may point to something other than a simple side effect.

If you answered yes to two or more of questions 1 to 5, book a review. Persistent night sweats that disrupt sleep are a legitimate reason to revisit your treatment plan.

If you answered no to all of them, the sweats may be mild or improving. Try the practical measures below, keep a short log, and mention it at your next appointment.

When Sweating Is an Emergency, Not a Review

Some symptoms that include sweating need urgent attention, not a routine appointment.

Possible serotonin syndrome

Serotonin syndrome is a rare but potentially serious reaction caused by too much serotonin activity, most often when two or more medicines that affect serotonin are combined, or after a dose increase. Seek emergency care if heavy sweating comes with:

• Agitation, restlessness or confusion
• A fast heartbeat or high blood pressure
• Fever or very high temperature
• Muscle twitching, jerking, stiffness or overactive reflexes
• Shivering, diarrhoea or dilated pupils

Medicines that can add to serotonin activity include some migraine treatments (triptans), tramadol and certain other pain medicines, other antidepressants, lithium, some cough medicines, and the herbal remedy St John’s wort.

Heart rhythm symptoms

Citalopram can affect the heart’s electrical rhythm (QT prolongation), particularly at higher doses. This is why prescribing guidance limits the maximum daily dose, with a lower limit for people over 60, those with liver problems and some others. Seek urgent help for palpitations, a racing or irregular heartbeat, fainting or severe dizziness.

Mental health crisis

If you have thoughts of harming yourself, or feel unsafe, contact emergency services or a crisis line straight away. In the U.S., you can call or text 988. Antidepressants carry a warning about suicidal thoughts in young people, especially early in treatment and after dose changes.

Is It Really the Celexa? Other Causes of Night Sweats

It is easy to blame a new medicine for every new symptom. Night sweats have many possible causes, and some deserve investigation in their own right. The NHS page on night sweats gives a helpful overview.

A useful timing clue: if the sweats began within weeks of starting citalopram or increasing the dose, and you have no other new symptoms, the medicine is a reasonable suspect. If they began long before, or come with other symptoms, a broader check-up makes sense.

Why Some People Sweat More Than Others on Celexa

Two people on the same dose can have very different experiences. Several factors may explain why:

• Dose. Some people notice more sweating at higher doses, and a dose increase is a common trigger.
• How your body processes citalopram. Citalopram is broken down partly by a liver enzyme called CYP2C19. People who naturally process it slowly, or who take medicines that block that enzyme (such as some acid-reducing medicines), may have higher blood levels and more side effects. This is one reason dose limits are lower for some groups.
• Age. Older adults often have higher citalopram levels at the same dose, which is why the maximum recommended dose is lower for people over 60.
• Individual sensitivity. Some people are simply more prone to sweating, whether from medicines, heat or stress.
• Other conditions. Menopause, thyroid problems, anxiety and alcohol use can add to medicine-related sweating.

Celexa Dose Limits, Explained

Citalopram is unusual among SSRIs in having a firm upper dose limit linked to heart safety. After studies showed that higher doses could prolong the QT interval on an ECG, regulators recommended that the daily dose should not exceed a set maximum for most adults, with a lower maximum for people over 60, people with liver impairment, people known to process citalopram slowly, and those taking medicines that raise citalopram levels.

Why does this matter for night sweats? Two reasons:

• Dose increases have a ceiling. If you are already at the maximum and sweating persists, the options are more likely to involve timing, a lower dose, or a different medicine, rather than “giving it more time at a higher dose.”
• Other medicines can raise levels. If a new medicine, for example an acid-reducing medicine that blocks CYP2C19, has raised your citalopram levels, both sweating and heart rhythm effects might increase. A pharmacist check is worthwhile whenever you start something new.

Never adjust your dose to stay “under the limit” on your own; your prescriber will consider your age, other medicines and health history when deciding what is right.

The Sweat–Anxiety Loop

Celexa is often prescribed for depression, and sometimes for anxiety-related conditions. Night sweats can feed directly into those symptoms. Waking soaked and with a racing heart can feel like a panic attack, and worrying about the next night can make it harder to fall asleep. Poor sleep, in turn, makes mood and anxiety harder to manage.

Ways to break the loop:

• Have a calm, practised routine for when you wake sweating: change, sip water, cool down, and return to bed without checking your phone.
• Use slow breathing to settle a racing heart.
• Remind yourself that this is a known side effect, not a sign that something is wrong with your treatment or your progress.
• Tell your prescriber if sweats are triggering anxiety or panic; this is relevant to your overall care.

Daytime Sweating at Work

Some people find daytime sweating harder to cope with than night sweats because it is visible. Practical tips:

• Choose breathable fabrics and darker or patterned colours that show sweat less.
• Wear layers you can remove.
• Keep a change of shirt, wipes and antiperspirant at work.
• Use a small desk fan where possible.
• Stay hydrated; it does not increase sweating but helps you feel better.

If You Share a Bed

Night sweats affect partners too. Separate lightweight duvets, a fan on your side, and moisture-wicking bedding can help both people sleep better. Being open about the cause can also reduce worry and help your partner understand why you are waking.

Keep a Two-Week Sweat Log

A brief record makes your review far more productive. Note each morning:

• Time you took Celexa, and the dose
• How many times you woke sweating
• Severity: damp, soaked, or needing to change bedding
• Bedroom temperature and bedding used, if you can
• Alcohol, caffeine or spicy food the evening before
• Any daytime sweating
• Hours slept and how you felt the next day
• Any other symptoms: fever, palpitations, anxiety, hot flushes

Practical Steps While You Wait

These measures do not fix the cause, but they can make nights more bearable.

Bedroom and bedding

• Keep the bedroom cool and well ventilated; a fan helps.
• Use lightweight, breathable bedding in layers you can remove.
• Choose cotton, bamboo or moisture-wicking sleepwear.
• Keep a spare set of sleepwear and a towel by the bed to minimise disruption.
• Consider a waterproof but breathable mattress protector.

Evening habits

• Limit alcohol, especially in the evening; it is a common sweat trigger and does not mix well with antidepressants.
• Avoid caffeine later in the day.
• Avoid very spicy foods and heavy meals close to bedtime.
• A lukewarm, not hot, shower before bed can help.
• Keep a glass of water by the bed to replace fluids.

Daytime sweating

• A clinical-strength antiperspirant applied at night can be more effective than one applied in the morning.
• Wear loose, breathable clothing in layers.

For broader sleep support, our guide on improving sleep naturally may help.

What not to do

• Do not stop Celexa suddenly. Discontinuation symptoms can include, ironically, sweating, along with dizziness, irritability, flu-like feelings and sleep disturbance.
• Do not reduce your dose on your own.
• Do not start herbal remedies such as St John’s wort to “balance” things; it can interact dangerously with citalopram.

A Conversation Script for Your Review

Many people find it hard to bring up side effects, particularly if the medicine is helping their mood. Here is a simple structure you can adapt:

“Celexa has been helping with my mood, and I want to keep that. But since [starting / my dose went up on date], I’ve been having night sweats. I’m waking [number] times a night, sometimes needing to change the sheets. It’s affecting my sleep and I’m tired during the day. I’ve kept a log for two weeks. I’d like to talk about whether anything can be done, and I want to make sure it isn’t something else.”

Useful questions to ask:

• Could my dose or the timing of my dose be part of the problem?
• Is it worth waiting longer, and if so, how long?
• Are any of my other medicines adding to it?
• Should we check anything else, such as thyroid function or hormones?
• If we change treatment, how would we do it safely?

What a Prescriber May Consider

The right approach depends on how well citalopram is working for your mood, how severe the sweating is, and your overall health. Options a prescriber might discuss include:

• Watchful waiting, if the sweats are mild or already improving.
• Dose review, since some people sweat less at a lower dose that still controls their symptoms.
• Timing change, such as moving the dose from evening to morning or vice versa. Results vary between people.
• Checking for other causes, with blood tests or examination if anything does not fit.
• Switching to another antidepressant, carefully and with a plan to avoid discontinuation symptoms. Sweating can occur with many antidepressants, so a switch is not guaranteed to help. See our comparisons of Prozac and Zoloft for background on related medicines.
• Additional treatment for sweating, which some prescribers consider in specific cases where the antidepressant needs to continue. This is a specialist decision weighed against possible side effects.

After the Review: Making Changes Safely

If you and your prescriber decide to change something, a few principles help keep the transition smooth:

• Change one thing at a time. If you adjust both the dose and the timing at once, it is harder to know which helped.
• Give each change time. Sweating may take a couple of weeks to respond to a dose or timing change. Keep logging.
• Follow the taper plan exactly. If reducing or switching, stick to the schedule your prescriber gives you. Report discontinuation symptoms such as dizziness, irritability or flu-like feelings.
• Watch your mood. Any change to an antidepressant can affect mood. Tell your prescriber promptly if low mood, anxiety or sleep worsen.
• Book a follow-up. Agree when you will check in to review how the change is going.

Myths About Celexa and Night Sweats

“Night sweats mean the dose is too strong for me.”

Not necessarily. Sweating can occur at any dose. A dose review is one option, but sweating alone does not prove the dose is wrong.

“If I switch antidepressants, the sweats will definitely stop.”

Sweating is reported with many antidepressants. A switch may help, but it is not guaranteed, and it carries its own adjustment period.

“Sweating is just my body detoxing.”

There is no evidence that SSRI sweating is a form of detox. It is a known effect of serotonin on temperature regulation and sweat glands.

“I should wait it out no matter how bad it gets.”

If sweats are severe, disrupting sleep, or making you want to stop the medicine, a review is appropriate. Waiting is reasonable only when symptoms are mild or clearly improving.

Celexa vs Lexapro: Is One Better for Sweating?

Escitalopram (Lexapro) is closely related to citalopram; it is essentially the active half of the citalopram molecule. Both can cause sweating, and individual responses vary. Some people switch between them and notice a difference, while others do not. Our article on Lexapro and night sweats covers escitalopram specifically.

Related Side Effects

If you are also dealing with stomach upset, our guide on Celexa and nausea explains how food and timing can help. For a related SSRI, see Lexapro and nausea.

Reliable Sources

For plain-language information, see MedlinePlus: Citalopram and the NHS citalopram guide. Prescribing information, including dose limits and warnings, is available on DailyMed. Side effects can be reported in the U.S. through FDA MedWatch.

Frequently Asked Questions

How common are night sweats on Celexa?

Increased sweating was one of the more commonly reported side effects of citalopram in clinical trials, and it is a recognised effect of SSRIs in general. Many people never experience it, while others find it significant.

Will Celexa night sweats go away?

For some people they improve over several weeks. For others they persist as long as the medicine is taken. If they have not improved after four to six weeks, or are disrupting your sleep, ask for a review.

Does taking Celexa in the morning help?

Some people find morning dosing reduces night sweats; others notice no difference. Discuss it with your prescriber before changing your routine, and keep the new timing consistent.

Can stopping Celexa cause sweating?

Yes. Sweating can be part of discontinuation symptoms if citalopram is stopped suddenly or reduced too quickly. Any reduction should be planned with your prescriber.

Are night sweats on Celexa dangerous?

Night sweats on their own are usually uncomfortable rather than dangerous. Sweating with fever, confusion, agitation, muscle twitching or a racing heart could indicate serotonin syndrome and needs emergency care. Night sweats with weight loss or persistent fever need medical assessment for other causes.

Can I drink alcohol on Celexa?

Alcohol can worsen night sweats, affect sleep and mood, and is generally advised against with antidepressants. Talk to your prescriber about what is safe for you.

Can I take a cooling supplement or herbal remedy for the sweats?

Check with a pharmacist first. Some herbal products, including St John’s wort, can interact dangerously with citalopram.

Key Points

• Night sweats are a recognised side effect of Celexa and other SSRIs.
• They often begin early in treatment or after a dose increase, and may or may not fade.
• Persistent, sleep-disrupting sweats are a valid reason to request a review.
• Sweating with agitation, fever, muscle twitching or a racing heart needs emergency care.
• Other causes, including menopause, infection, thyroid problems and alcohol, should be considered.
• Do not stop or reduce Celexa without your prescriber’s guidance.
• A two-week sweat log and a clear conversation make your review far more effective.

This article is for general information and does not replace advice from your doctor, psychiatrist or pharmacist. If you are struggling with your mental health, please reach out to a healthcare professional or a crisis service.