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Duloxetine

Duloxetine is a type of antidepressant medicine known as a serotonin-noradrenaline reuptake inhibitor (SNRI). SNRIs are thought to work by increasing the amount of mood-enhancing chemicals, serotonin and noradrenaline, in your brain.

It's used to treat depression and anxiety.

It's also used to treat nerve pain, such as fibromyalgia, and can be used to treat stress urinary incontinence in women.

Duloxetine comes as capsules. It is only available on prescription.

Who can take duloxetine

Most adults aged 18 years and over can take duloxetine.

For stress urinary incontenince, duloxetine can only be taken by women.

Duloxetine is not suitable for some people. To make sure it's safe for you, tell your doctor if you:

  • have ever had an allergic reaction to duloxetine or any other medicine
  • have kidney or liver problems
  • have a heart problem
  • are taking or have taken other medicines for depression within the last 14 days
  • have glaucoma – duloxetine can increase the pressure in your eye
  • have ever had a seizure or fit, manic episodes or bipolar disorder
  • bruise easily
  • are trying to get pregnant, are already pregnant, or you're breastfeeding

Dosage and strength

For depression, anxiety and nerve pain, duloxetine comes in 30mg and 60mg capsules.

For stress urinary incontinence, duloxetine comes in 20mg and 40mg capsules.

How much you take will depend on what you're taking it for:

  • depression – the starting dose is 60mg, taken once a day and this can be increased to 120mg, taken once a day
  • anxiety – the starting dose is 30mg, taken once a day and this can be increased to 60mg, taken once a day
  • nerve pain – the starting dose is 60mg taken once a day, and this can be increased to 60mg taken twice a day
  • stress urinary incontinence – the starting dose is 20mg, taken twice a day and this can be increased to 40mg, taken twice a day, after 2 weeks

Swallow the capsules whole with a drink of water or juice. Do not chew them.

You can take duloxetine with or without food, but it's best to take it at the same time each day.

How long to take it for

How long you take duloxetine for depends on why you're taking it.

For depression or anxiety, once you're feeling better, it's likely that you'll continue to take it for several more months. Most doctors recommend that you take antidepressants for 6 months to a year after you no longer feel depressed or anxious. Stopping your medicine too soon can make depression and anxiety come back.

When you stop taking it, your doctor will probably recommend reducing your dose gradually over several weeks, to help prevent withdrawal side effects.

For nerve pain or urinary incontinence, if duloxetine is helping your symptoms, you can continue taking it long term. Your doctor may check that you're still having relief from the pain or urinary incontinence every few months.

If you forget to take it

If you usually take duloxetine once a day, take the missed dose as soon as you remember, unless it's less than 12 hours until your next dose, in which case skip the missed dose and take the next one at the usual time.

If you usually take it twice a day, take the missed dose as soon as you remember, unless it's less than 4 hours until your next dose, in which case skip the missed dose and take the next one at the usual time.

Never take 2 doses at the same time to make up for a forgotten dose.

If you often forget doses, it may help to set an alarm to remind you. You could also ask your pharmacist for advice on other ways to help you remember to take your medicine.

If you take too much

Taking too much duloxetine can cause symptoms such as:

  • feeling sleepy
  • being sick (vomiting)
  • tremors
  • feeling dizzy
  • a fast heart rate
  • sweating
  • feeling restless

The amount of duloxetine that can lead to an overdose varies from person to person.

  • you take more than your prescribed dose of duloxetine

Go to 111.nhs.uk or call 111

If you need to go to A&E, do not drive yourself. Get someone else to drive you or call for an ambulance.

Take the duloxetine packet or the leaflet inside it, plus any remaining medicine, with you.

  • you take more than your prescribed dose of duloxetine and you have a seizure or fit

Find your nearest A&E

If you have been feeling better for 6 months or more, your doctor may suggest coming off duloxetine.

Your doctor may reduce your dose gradually over several weeks, or longer if you've been taking duloxetine for a long time.

This is to help prevent any extra side effects you might get as a reaction to coming off the medicine.

Do not stop taking duloxetine suddenly or without talking to your doctor first.

Common side effects

These common side effects of duloxetine can happen in up to 1 in 10 people. There are things you can do to help cope with them:

Speak to a doctor or pharmacist if the advice on how to cope does not help and a side effect is still bothering you or does not go away.

Serious side effects are rare and happen in less than 1 in 100 people.

Book an appointment with your doctor if you get changes in your periods, such as heavy bleeding, spotting or bleeding between periods.

Call a doctor or contact 111 straight away if you have:

  • hallucinations (seeing or hearing things that are not real), or you become aggressive and angry
  • feelings of euphoria, excessive enthusiasm or excitement, or feeling restless so that you cannot sit or stand still
  • constant headaches, long-lasting confusion or weakness, or frequent muscle cramps – these can be signs of low sodium levels in your blood
  • yellowing of the whites of your eyes, or your skin although this may be less obvious on brown or black skin – these can be signs of a liver problem
  • eye pain or blurred vision
  • black or red poo or blood in your vomit – these can be signs of bleeding from your gut
  • coughed up blood or have blood in your pee
  • bleeding from your gums, or bruises that appear without a reason or get bigger

Go to 111.nhs.uk or call 111.

  • tightness in your chest or shortness of breath
  • any heavy bleeding that you cannot stop, such as cuts or nosebleeds that do not stop within 10 to 15 minutes
  • painful erections that last longer than 2 hours – this may happen even when you're not having sex
  • thoughts about harming yourself or ending your life

Find your nearest A&E

In rare cases, it's possible to have a serious allergic reaction (anaphylaxis) to duloxetine.

These are not all the side effects of duloxetine. For a full list, see the leaflet inside your medicines packet.

Duloxetine and pregnancy

Duloxetine is not generally recommended in pregnancy because there is not much information on whether it may affect the developing baby. But if duloxetine was working well for you before you got pregnant, then it may be reasonable to keep taking it during pregnancy. Discuss this with your doctor or midwife.

If you take duloxetine in the weeks before birth it can sometimes cause short-term withdrawal symptoms and, very rarely, breathing problems in the baby. Your baby will be checked after birth and given additional care if needed.

Taking duloxetine in the last month of pregnancy may slightly increase your risk of bleeding after delivery. However, because this side effect is rare, it is not a reason to stop taking duloxetine while pregnant.

It is important that mental health problems are well treated since these can affect both your and your baby's wellbeing. Depression and anxiety can sometimes get worse during pregnancy and after your baby has been born.

Speak to your doctor if you get pregnant. They will help you weigh up the risks and benefits so you can decide on the best treatment for you and your baby.

If your doctor or health visitor says your baby is healthy, you can take duloxetine while breastfeeding.

Duloxetine gets into breast milk in very small amounts, and has not been known to cause side effects in breastfed babies.

If you're breastfeeding, or planning to breastfeed, talk to your doctor or pharmacist as other medicines might be better while breastfeeding. It is important that you take the medicine that works for you.

It's important to continue taking duloxetine to keep you well. Breastfeeding will also benefit both you and your baby.

If you notice that your baby is not feeding as well as usual or seems unusually sleepy, irritable or restless, or you have any other concerns about your baby, talk to your health visitor, midwife, pharmacist or doctor as soon as possible.

Duloxetine and fertility

There's no clear evidence to suggest that taking duloxetine reduces fertility in either men or women.

But speak to your doctor before taking it if you're trying to get pregnant.

Cautions with other medicines

Some medicines and duloxetine can affect each other and increase the chances of you having side effects.

Tell your doctor or pharmacist if you're taking:

  • any other medicines for depression – some rarely used antidepressants can affect duloxetine and cause very high blood pressure even after you have stopped taking them
  • medicine used to help prevent blood clots, such as warfarin
  • diazepam, chlorphenamine or other medicines that can make you feel more sleepy
  • tramadol – this can increase the chances of you having certain side effects

Do not take the herbal remedy St John's wort while you're being treated with duloxetine, as this will increase your risk of side effects.

There's not enough information to say that other herbal remedies and supplements are always safe to take with duloxetine. They're not tested in the same way as pharmacy and prescription medicines.

Related links

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1,481 public posts

Duloxetine

Hi.I've just been given Duloxetine for my Anxiety and Depression. I have been feeling poorly for a long time, with so many different things wrong, gastric trouble, shaking, no interest, so very tired the list I endless, in the end I contacted my doctor.
Hi.I've just been given Duloxetine for my Anxiety and Depression. I have been feeling poorly for a long time, with so many different things wrong, gastric trouble, shaking, no interest, so very tired the list I endless, in the end I contacted my doctor.
Janlyn1953 profile image
Janlyn1953
in Anxiety Support
26 days ago

duloxetine withdrawal

I’m looking for any suggestions to coming off duloxetine after 10years+ and if anything helped these awful and debilitating symptoms I’m having.
I’m looking for any suggestions to coming off duloxetine after 10years+ and if anything helped these awful and debilitating symptoms I’m having.
Liolio78 profile image
Liolio78
in Fibromyalgia Action UK
10 days ago

Duloxetine

However, after 4 days without Duloxetine my pain has increased to a level I don't remember feeling before which makes me think they really were controlling my pain. Did I give up on Duloxetine too soon? Let me know your thoughts and/or experience please, thanks and God bless, Lynn in York
However, after 4 days without Duloxetine my pain has increased to a level I don't remember feeling before which makes me think they really were controlling my pain. Did I give up on Duloxetine too soon? Let me know your thoughts and/or experience please, thanks and God bless, Lynn in York
LynnYorm profile image
LynnYorm
in Fibromyalgia Action UK
5 months ago
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Addiction?

I have recently started taking duloxetine and have been on co-codamol for around 7 months at highest dose i can take (60mg 4 times a day pretty much) for pain. I have tried reducing CC but pain gets unbearable at times so keep going back up.
I have recently started taking duloxetine and have been on co-codamol for around 7 months at highest dose i can take (60mg 4 times a day pretty much) for pain. I have tried reducing CC but pain gets unbearable at times so keep going back up.
Tassadar profile image
Tassadar
in Fibromyalgia Action UK
22 days ago

duloxetine

good evening lovely people,I hope you are enjoying the cool weather.i have been on Amitriptyline for more than 8weeks and haven't seen any difference, my GP wants to put me on duloxetine,I hope I spelt it correctly..has anyone tried it and if so can you drive with it?
good evening lovely people,I hope you are enjoying the cool weather.i have been on Amitriptyline for more than 8weeks and haven't seen any difference, my GP wants to put me on duloxetine,I hope I spelt it correctly..has anyone tried it and if so can you drive with it?
YMEPLEASE profile image
YMEPLEASE
in Fibromyalgia Action UK
6 months ago

Duloxetine & Pregabalin Information

He has offered me either Duloxetine or Pregabalin & told me to look into both on NHS website & decide for myself which I would prefer. Has anyone had either of these & has it helped? Are there any side effects? Thank you
He has offered me either Duloxetine or Pregabalin & told me to look into both on NHS website & decide for myself which I would prefer. Has anyone had either of these & has it helped? Are there any side effects? Thank you
Faxgirl profile image
Faxgirl
in Fibromyalgia Action UK
3 months ago

Open Angle glaucoma and Duloxetine medication

I have open angle glaucoma and my Neurologist wants me to go on Duloxetine as I have peripheral neuropathy. I have read the leaflet and it says do not take if you have glaucoma as it can raise eye pressure.
I have open angle glaucoma and my Neurologist wants me to go on Duloxetine as I have peripheral neuropathy. I have read the leaflet and it says do not take if you have glaucoma as it can raise eye pressure.
Karjade profile image
Karjade
in Glaucoma UK
17 days ago

restless legs and tingling in feet

I’m struggling to focus when I’m at work and wanting to sleep more I already take duloxetine sertraline and amitriptaline Thanks 😊
I’m struggling to focus when I’m at work and wanting to sleep more I already take duloxetine sertraline and amitriptaline Thanks 😊
Winnie74 profile image
Winnie74
in Fibromyalgia Action UK
3 months ago

Recently Diagnosed Fibromyalgia

I don’t really want to start on duloxetine even though I feel pretty miserable most of the time 😣 Any tips to help with the constant aching low mood and tiredness will be greatly appreciated. Sorry for long post!
I don’t really want to start on duloxetine even though I feel pretty miserable most of the time 😣 Any tips to help with the constant aching low mood and tiredness will be greatly appreciated. Sorry for long post!
Eladee profile image
Eladee
in Fibromyalgia Action UK
6 days ago

Stalling

Tried fluoxetine and duloxetine but they weren't as effective as I had hoped. Are there better alternatives?
Tried fluoxetine and duloxetine but they weren't as effective as I had hoped. Are there better alternatives?
BlueJam profile image
BlueJam
in Anxiety and Depression Support
27 days ago

Duloxetine for pain and anxiety.

I have been prescribed Duloxetine for pain, anxiety and depression. I have fibromyalgia and FND. I was taking 20mg twice a day, morning and evening but it was no longer effective. About a month ago the doctor raised it to 60mg, but said I must take 40 mg at night and 20mg in the morning.
I have been prescribed Duloxetine for pain, anxiety and depression. I have fibromyalgia and FND. I was taking 20mg twice a day, morning and evening but it was no longer effective. About a month ago the doctor raised it to 60mg, but said I must take 40 mg at night and 20mg in the morning.
Rebel1961 profile image
Rebel1961
in Fibromyalgia Action UK
2 months ago

Duloxetine

Does anyone have any experience with duloxetine during pregnancy or just in general for fibro? Jar x
Does anyone have any experience with duloxetine during pregnancy or just in general for fibro? Jar x
jarbnsnmelts profile image
jarbnsnmelts
in Fibromyalgia Action UK
7 months ago

new here any advice?

I have had Butec patches and Duloxetine but they didn't help. I'm currently havingacupuncture. Has it helped anyone? Thanks in advance for any advice. Janet
I have had Butec patches and Duloxetine but they didn't help. I'm currently havingacupuncture. Has it helped anyone? Thanks in advance for any advice. Janet
Jhiggy profile image
Jhiggy
in My Fibro Community
5 months ago

Epilepsy and fibro

There has to be something else rather than just duloxetine that does not appear to be working.
There has to be something else rather than just duloxetine that does not appear to be working.
Millbills profile image
Millbills
in Fibromyalgia Action UK
3 months ago

reducing morphine

morning peeps I have recently had my morphine reduced to wean off it plus doctor told me I could double my duloxetine from 60mg to 120 a day well since then I've had bad diarrhoea so he said go back to 60mg which I have but still have diarrhoea I wonder if its the morphine reduction?
morning peeps I have recently had my morphine reduced to wean off it plus doctor told me I could double my duloxetine from 60mg to 120 a day well since then I've had bad diarrhoea so he said go back to 60mg which I have but still have diarrhoea I wonder if its the morphine reduction?
Mille21 profile image
Mille21
in Fibromyalgia Action UK
5 months ago

Azercitidine

I am also taking Pregabalin and duloxetine. Hopefully someone out there can tell me about their side effects experience
I am also taking Pregabalin and duloxetine. Hopefully someone out there can tell me about their side effects experience
Smdg profile image
Smdg
in MPN Voice
2 months ago

Recent Fibro “diagnosis”

He has suggested amitriptyline, duloxetine or pregabalin. I am struggling a little bit accepting the “diagnosis” as I feel like there’s avenues still left to be explored and the way that the physiotherapist explained it was it was “all in my head”.
He has suggested amitriptyline, duloxetine or pregabalin. I am struggling a little bit accepting the “diagnosis” as I feel like there’s avenues still left to be explored and the way that the physiotherapist explained it was it was “all in my head”.
Hidden profile image
Hidden
in Fibromyalgia Action UK
3 months ago

Flare....how long will this last

My GP has suggested that I try taking Duloxetine. But the problem is that I have to wean my current SSRI first and I know that is going to be awful as I have done it before. How long will this flare last and has anyone any experience of Duloxetine??. Thanks in advance 💜💜
My GP has suggested that I try taking Duloxetine. But the problem is that I have to wean my current SSRI first and I know that is going to be awful as I have done it before. How long will this flare last and has anyone any experience of Duloxetine??. Thanks in advance 💜💜
nellie_deany profile image
nellie_deany
in Fibromyalgia Action UK
8 months ago

Tips for better sleep?

I am on 90mg Duloxetine in the morning as well as 25mg vitamin D tablets. And i am currently on 75mg Pregablin , which I am slowly weaning off of because apparently this medication causes long term damage.
I am on 90mg Duloxetine in the morning as well as 25mg vitamin D tablets. And i am currently on 75mg Pregablin , which I am slowly weaning off of because apparently this medication causes long term damage.
accidentalglixch profile image
accidentalglixch
in Fibromyalgia Action UK
3 months ago

Blood Results and fibromyalgia diagnosis

increase the thyroxine and she said ‘ I can’t increase thyroxine as the thyroid/medication isn’t the problem, the blood results are all ok you’ve got fibromyalgia’ She then said she’d do a referral for physio told me to restart the gabapentin for my back pain and read about fibromyalgia and also consider duloxetine
increase the thyroxine and she said ‘ I can’t increase thyroxine as the thyroid/medication isn’t the problem, the blood results are all ok you’ve got fibromyalgia’ She then said she’d do a referral for physio told me to restart the gabapentin for my back pain and read about fibromyalgia and also consider duloxetine
Eladee profile image
Eladee
in Thyroid UK
5 days ago
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