HeadMeds gives young people in the United Kingdom general information about medication. HeadMeds does not give you medical advice. Please talk to your Doctor or anyone else who is supporting you about your own situation because everyone is different. Please read more important details about our site.

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Citalopram

Return to Citalopram overview
  1. Use and Action
  2. Warnings and side effects
  3. Sex, drink, weight and everything else
Jasmine listing
Taking Citalopram for agoraphobia and depression
Citalopram certainly didn’t cure me... it allowed me to leave the house to see a psychologist, to start back at school and to see my friends again.

Whilst taking citalopram some people may think about hurting themselves or committing suicide. This can happen to anyone, including people who are under 18.

These thoughts may happen or get worse in the first few weeks of taking the tablets until the brain levels of serotonin become stable. Always tell a close friend or a family member if you feel this way.

You must go straight to hospital with your tablets if you have any of these thoughts. You must tell the doctor that you are taking citalopram. There are other things you can take instead.

Citalopram is a safe medication but in rare cases it can cause some serious side-effects.

Citalopram can affect the way your heart works and should be used carefully with certain medications.

Citalopram and escitalopram (a very similar medicine) can change the way electricity goes through the heart (called the QT length). Escitalopram has less of this effect on the heart. Before starting citalopram your doctor may check your heart using a ECG. If you're taking any other medicines that affect your heart, your doctor may decide to use a different medicine or check your heart on a regular basis.

Young people under 18 taking citalopram can get serious side-effects

  • Young people under 18 do have an increased risk of trying to kill themselves, thinking about killing themselves, and hostility (mostly aggression, oppositional behaviour and anger) when they take citalopram.
  • This is why it is not licensed for people under 18 years. If you are under 18, make sure that you and your doctor have talked about what to do if you get these side effects and have a plan for what to do.
  • You and your doctor may decide together that the benefits are greater than the risks for you.
  • If you are taking citalopram and have not talked about this with your doctor, go back to them and talk it through. You might also want to talk to your parents or carers about it.

SSRIs can, but not very often, increase your risk of bleeding, including stomach or gut (intestinal) bleeding. Let your doctor know if you vomit blood or develop black or blood stained poo.

Do not stop taking the tablets until you talk to your doctor, or you may get withdrawal symptoms as well. Taking citalopram with food will lower the risk of stomach problems.

Some side-effects that do appear should get better after a few days. If they do not, you should go back to your doctor

If you get any side effects not listed here please look at the patient leaflet in the medicine pack or speak to your pharmacist or doctor

There are many possible side-effect when you start taking citalopram. Some people will have no side-effect and some people will have a few - it's hard to say which you will get as everyone is different. Most will get better after a few days, but if they do not and they are affecting your life, you should go back to your doctor.

Do not stop taking the tablets until you talk to your doctor, or you may get withdrawal symptoms as well.

Very common side effects (could affect more than 1 in 10 people)

  • Difficulty sleeping (insomnia) - try taking your dose first thing in the morning
  • Dry mouth (a dry mouth increases the risk of tooth decay, so do clean your teeth more often than usual and avoid drinking sugary drinks)
  • Feeling sick (nausea) or vomiting - try taking your citalopram with or just after food. This tends to wear off after a few days.
  • Headache
  • Lower sex drive, or (for men) problems with ejaculation and erection and (for women) failing to reach an orgasm - talk to your doctor or pharmacist if you get this. This can be a symptom of depression itself. 

Common side effect (could affect up to 1 in 10 people)

  • Sleepiness - try taking just before going to bed
  • Lower appetite, and loss of weight
  • Agitation, anxiety, trembling, confusion and nervousness
  • Loose poo (diarrhoea)
  • Itching or prickling of the skin
  • Pain in muscles and joints

You shouldn't be worried about these side effects. Some people will not get any side-effects at all. If you think you might have a side effect to your medicine, you should ask your doctor, nurse or pharmacist.

  • There are other side-effects that you can get when taking this medicine - we have included the most common ones here.
  • Please look at the leaflet inside your medicine box, or ask a doctor or pharmacist, if you want to know if you're getting a side-effect from your medicine.
  • If you do get a side-effect, you can report it yourself via the Yellow card system.

Tell your doctor or pharmacist before you take citalopram if you have any of these conditions

You need to talk to your doctor or pharmacist if you have, or have ever had:

  • Liver disease
  • Kidney disease
  • Diabetes (you may need an adjustment of your antidiabetic therapy)
  • Epilepsy or a history of seizures or fits
  • A bleeding problem, or bleeding in the stomach or gut
  • Mania or bipolar disorder
  • Low blood levels of sodium
  • Problems with your eyes, such as certain kinds of glaucoma (pressure in the eye).
  • Heart problems, or a heart attack.
  • A low heart-rate or long-lasting diarrhoea (loose poo), vomiting (being sick) or using diuretics (water tablets)
  • A fast or irregular heartbeat, fainting, collapsing or dizziness when you stand up

Citalopram can interact with some other medicines and drugs

Do not take citalopram:

  • if you have taken a monoamine oxidase inhibitor antidepressant (MAOI) like moclobemide, phenelzine, isocarboxazid or tranylcypromine in the last 14 days
  • if you are taking the herbal remedy St. John’s Wort. St. John’s Wort is a herbal medicine available in shops that is also used for low mood. This does not mix well with citalopram, so please tell your doctor or pharmacist if you are trying this or want to try it.

If you have any further questions about this you should speak to your doctor or pharmacist.

Always talk to the doctor if you are taking other medicines. Tell the pharmacist you are taking citalopram when you buy medicines from a pharmacy (including things you put on your skin) for common illnesses.

Citalopram does not mix well with some other medicines

Other medicines may cause problems when taken with citalopram so always check with your doctor or pharmacist.

Citalopram does not mix well with street drugs or legal highs

We don't know exactly how citalopram interacts with street drugs and legal highs.

  • Cannabis can make drowsiness worse with citalopram and give you a fast heartbeat.
  • Methadone can make drowsiness worse with citalopram. The citalopram could increase the concentration of methadone in your body. The two together can also cause serious heart problems.
  • Citalopram could raise the level of cocaine in your body, giving you a bigger reaction. Your blood pressure could also increase to a dangerous level.
  • Taking citalopram with cocaine or ecstasy or amphetamines could bring on serotonin syndrome. You could get a high temperature/fever, agitation, confusion, trembling or weird muscle movements. You need to go to hospital if this happens. Tell the doctor that you are taking citalopram.

Stopping the medication causes the balance of chemicals in the brain to alter

When you start taking a SSRI, the brain adjusts to having a higher level of serotonin around. If you stop taking the SSRI suddenly, the levels of serotonin start to drop and your brain can take a while to adapt to this change. You could get some symptoms from the change which are called withdrawal symptoms.

Stopping this medicine quickly, or reducing the dose too much at once, may cause uncomfortable symptoms called withdrawal. These do not mean you are addicted to the medicine - just that your brain has become used to them to control the serotonin levels.

Withdrawal symptoms usually start a few days after stopping the medicine

You can stop taking it safely with your doctor's help

  • You will probably get uncomfortable withdrawal symptoms if you stop citalopram suddenly. It is better to agree stopping with a doctor who will reduce you gradually.
  • This does not mean you are addicted to the medicine - just that your brain has become used to citalopram to control the serotonin levels.

Some of the symptoms you might get include

  • Dizziness or headaches
  • numbness or tingling in hands or feet
  • sleep disturbances (vivid dreams, nightmares, not being able to sleep)
  • ‘electric shock’ feelings in the head, neck and back (spine)
  • feeling anxious, confused or disorientated
  • feeling or being sick, or having loose poo (diarrhoea)
  • sweating or shaking
  • feeling restless or agitated, or feeling emotional or irritable
  • flu-like symptoms
  • ringing in your ears (tinnitus)

Problems with your eyes, or fluttering/pounding heartbeat (palpitations) can happen, but not as often as the others above.

Go and speak to your doctor if you have missed a few doses or have decided to stop taking your medication. If you slowly reduce your medication, withdrawal symptoms are less likely to occur.

Withdrawal symptoms should stop after a few days. If they do not, or they are stopping you getting on with your life, you might need the help of a doctor.

If you agree with your doctor to stop the medicine, you will carry on with a lower dose for one to two weeks. This will reduce the chances of you getting withdrawal symptoms.

You can stop taking it safely with your doctor’s help

Stop taking medsStop taking Citalopram and go to a doctor or hospital straight away if you get any of the following symptoms:

Stop taking citalopram and go to a doctor or hospital straight away if you get any of the following symptoms:

  • Difficulty breathing
  • Swelling of your face, lips, tongue or throat so that you cannot swallow or breathe
  • Really bad itching of the skin (with raised lumps)
  • Fast, uneven heartbeat and fainting - this could mean a life-threatening condition called ‘torsades de pointes’
Dont stop taking medsGo to your doctor or the hospital straight away, but don't stop taking Citalopram if you get any of the following symptoms:

Go to a doctor or hospital straight away, but do not stop your citalopram, if you get any of the following symptoms:

  • You start having fits (seizures) for the first time, or if fits that you have had in the past happen more often
  • Your behaviour changes because you feel very happy or over excited
  • You get a high temperature/fever, agitation, confusion, trembling or weird muscle movements. These may be signs of a rare condition called ‘serotonin syndrome
  • Tiredness, confusion and muscle twitching. You may have a low blood level of sodium

Some side-effects that do appear should get better after a few days. If they do not, you should go back to your doctor.

Don't stop taking Citalopram until you talk to your doctor or you may get withdrawal symptoms as well.

Very common - could affect more than 1 in 10 people

  • Sleepiness, or difficulty sleeping
  • More sweating
  • Dry mouth (a dry mouth increases the risk of tooth decay, so do clean your teeth more often than usual)
  • Feeling sick (nausea)
  • Headache
  • Common - could affect up to 1 in 10 people

    • Lower appetite, and loss of weight
    • Agitation, anxiety, trembling, confusion and nervousness
    • Strange dreams
    • Tingling or numbness in the hands or feet
    • Ringing in the ears (tinnitus)
    • Yawning and tiredness
    • Being sick (vomiting)
    • Loose poo (diarrhoea), or constipation
    • Itching or prickling of the skin
    • Pain in muscles and joints
    • Lower sex drive, or (For men) problems with ejaculation and erection and (For women) failing to reach an orgasm
    • Uncommon - likely to affect up to 1 in every 100 people

      • There are other side-effects that you can get when taking this medicine – we have only included the most common ones here.
      • Please look at the leaflet inside your medicine box, or ask a doctor or pharmacist, if you want to know if you are getting a side-effect from your medicine.
      • If you do get a side-effect, please think about reporting it via the Yellow Card scheme.