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MIRTAZAPINE 15 MG/ML ORAL SOLUTION

Active substance: MIRTAZAPINE

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Package leaflet: information for the patient
Mirtazapine 15 mg/ml oral solution
Read all of this leaflet carefully before you start taking this medicine because it contains important
information for you.





Keep this leaflet. You may need to read it again.
If you have any further questions, ask your doctor or pharmacist.
This medicine has been prescribed for you only. Do not pass it on to others. It may harm them,
even if their signs of illness are the same as yours.
If you get any side effects talk to your doctor or pharmacist. This includes any possible side effects
not listed in this leaflet. See section 4.

What is in this leaflet
1.
What Mirtazapine is and what it is used for
2.
What you need to know before you take Mirtazapine
3.
How to take Mirtazapine
4.
Possible side effects
5.
How to store Mirtazapine
6.
Contents of the pack and other information
1.

What Mirtazapine is and what it is used for

Mirtazapine is one of a group of medicines called antidepressants.
Mirtazapine is used to treat depressive illness in adults.
Mirtazapine will take 1 to 2 weeks before it starts working. After 2 to 4 weeks you may start feeling
better. You must talk to your doctor if you do not feel better or if you feel worse after 2 to 4 weeks. More
information is in section 3 heading "When can you expect to start feeling better".
2.

What you need to know before you take Mirtazapine

Do not take Mirtazapine:
• if you are allergic to mirtazapine or any of the other ingredients of this medicine (listed in section 6).
If so, you must talk to your doctor as soon as you can before taking Mirtazapine.
• if you are taking or have recently taken (within the last two weeks) medicines called monoamine
oxidase inhibitors (MAO-Is).
Warnings and precautions
Talk to your doctor or pharmacist before taking Mirtazapine.
Take special care with Mirtazapine
Children and adolescents
Mirtazapine should normally not be used for children and adolescents under 18 years because efficacy
was not demonstrated. Also, you should know that patients under 18 have an increased risk of sideeffects such as suicide attempt, suicidal thoughts and hostility (predominantly aggression, oppositional
behaviour and anger) when they take this class of medicines. Despite this, your doctor may prescribe
Mirtazapine for patients under 18 because he/she decides that this is in their best interests. If your doctor
has prescribed Mirtazapine for a patient under 18 and you want to discuss this, please go back to your
doctor. You should inform your doctor if any of the symptoms listed above develop or worsen when
patients under 18 are taking Mirtazapine. Also, the long-term safety effects concerning growth,
maturation and cognitive and behavioural development of Mirtazapine in this age group have not yet

been demonstrated. In addition, significant weight gain has been observed in this age category more
often when treated with Mirtazapine compared with adults.
Thoughts of suicide and worsening of your depression
If you are depressed you can sometimes have thoughts of harming or killing yourself. These may be
increased when first starting antidepressants, since these medicines all take time to work, usually about
two weeks but sometimes longer.
You may be more likely to think like this:
• if you have previously had thoughts about killing or harming yourself.
• if you are a young adult. Information from clinical trials has shown an increased risk of suicidal
behaviour in adults aged less than 25 years with psychiatric conditions who were treated with an
antidepressant.
→ If you have thoughts of harming or killing yourself at any time, contact your doctor or go to a hospital
straightaway.
You may find it helpful to tell a relative or close friend that you are depressed, and ask them to read
this leaflet. You might ask them to tell you if they think your depression is getting worse, or if they are
worried about changes in your behaviour.
Also take special care with Mirtazapine






if you have, or have ever had one of the following conditions.
→ Tell your doctor about these conditions before taking Mirtazapine, if not done previously
- seizures (epilepsy). If you develop seizures or your seizures become more frequent, stop taking
Mirtazapine and contact your doctor immediately;
- liver disease, including jaundice. If jaundice occurs, stop taking Mirtazapine and contact your
doctor immediately;
- kidney disease;
- heart disease, or low blood pressure;
- schizophrenia. If psychotic symptoms, such as paranoid thoughts become more frequent or
severe, contact your doctor straightaway;
- manic depression (alternating periods of feeling elated/overactivity and depressed mood). If you
start feeling elated or over-excited, stop taking Mirtazapine and contact your doctor immediately;
- diabetes (you may need to adjust your dose of insulin or other antidiabetic medicines);
- eye disease, such as increased pressure in the eye (glaucoma);
- difficulty in passing water (urinating), which might be caused by an enlarged prostate;
-certain kinds of heart conditions that may change your heart rhythm, a recent heart attack heart
attack, heart failure, or take certain medicines that may affect the heart’s rhythm.
if you develop signs of infection such as inexplicable high fever, sore throat and mouth ulcers.
→ Stop taking Mirtazapine and consult your doctor immediately for a blood test.
In rare cases these symptoms can be signs of disturbances in blood cell production in the bone
marrow. While rare, these symptoms most commonly appear after 4-6 weeks of treatment.
if you are an elderly person. You could be more sensitive to the side-effects of antidepressants.

Other medicines and Mirtazapine
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
Do not take Mirtazapine in combination with:
• monoamine oxidase inhibitors (MAO inhibitors). Also, do not take Mirtazapine during the two
weeks after you have stopped taking MAO inhibitors. If you stop taking Mirtazapine, do not take
MAO inhibitors during the next two weeks either.
Examples of MAO inhibitors are moclobemide, tranylcypromine (both are antidepressants) and
selegiline (used for Parkinson’s disease).
Take care when taking Mirtazapine in combination with:













antidepressants such as SSRIs, venlafaxine and L-tryptophan or triptans (used to treat
migraine), tramadol (a pain-killer), linezolid (an antibiotic), lithium (used to treat some psychiatric
conditions), methylene blue (used to treat high levels of methemoglobin in the blood) and St.
John’s Wort – Hypericum perforatum preparations (a herbal remedy for depression). In very rare
cases Mirtazapine alone or the combination of Mirtazapine with these medicines, can lead to a socalled serotonin syndrome. Some of the symptoms of this syndrome are: inexplicable fever,
sweating, increased heart rate, diarrhoea, (uncontrollable) muscle contractions, shivering, overactive
reflexes, restlessness, mood changes and unconsciousness. If you get a combination of these
symptoms, talk to your doctor immediately.
the antidepressant nefazodone. It can increase the amount of Mirtazapine in your blood. Inform
your doctor if you are using this medicine. It might be needed to lower the dose of Mirtazapine, or
when use of nefazodone is stopped, to increase the dose of Mirtazapine again.
medicines for anxiety or insomnia such as benzodiazepines;
medicines for schizophrenia such as olanzapine;
medicines for allergies such as cetirizine;
medicines for severe pain such as morphine.
In combination with these medicines Mirtazapine can increase the drowsiness caused by these
medicines.
medicines for infections: medicines for bacterial infections (such as erythromycin, medicines for
fungal infections (such as ketoconazole) and medicines for HIV/AIDS (such as HIV-protease
inhibitors) and drugs for stomach ulcers (such as cimetidine).
In combination with Mirtazapine these medicines can increase the amount of Mirtazapine in your
blood. Inform your doctor if you are using these medicines. It might be needed to lower the dose of
Mirtazapine, or when these medicines are stopped, to increase the dose of Mirtazapine again.
medicines for epilepsy such as carbamazepine and phenytoin;
medicines for tuberculosis such as rifampicin.
In combination with Mirtazapine these medicines can reduce the amount of Mirtazapine in your
blood. Inform your doctor if you are using these medicines. It might be needed to increase the dose
of Mirtazapine, or when these medicines are stopped to lower the dose of Mirtazapine again.
medicines to prevent blood clotting such as warfarin.
Mirtazapine can increase the effects of warfarin on the blood. Inform your doctor if you are using
this medicine. In case of combination it is advised that a doctor monitors your blood carefully.
medicines that may affect the heart’s rhythm such as certain antibiotics and some antipsychotics.

Mirtazapine with food and alcohol
You may get drowsy if you drink alcohol while you are taking Mirtazapine.
You are advised not to drink any alcohol.
You can take Mirtazapine with or without food.
Pregnancy and breast-feeding
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your
doctor or pharmacist for advice before taking this medicine.
Limited experience with Mirtazapine administration to pregnant women does not indicate an increased
risk. However, caution should be exercised when used during pregnancy.
If you use Mirtazapine until, or shortly before birth, your baby should be supervised for possible adverse
effects.
When taken during pregnancy, similar drugs (SSRIs) may increase the risk of a serious condition in
babies, called persistent pulmonary hypertension of the newborn (PPHN), making the baby breathe faster
and appear bluish. These symptoms usually begin during the first 24 hours after the baby is born. If this
happens to your baby you should contact your midwife and/or doctor immediately.
Driving and using machines

Mirtazapine can affect your concentration or alertness. Make sure these abilities are not affected before
you drive or operate machinery. If your doctor has prescribed Mirtazapine for a patient under 18 years
make sure the concentration and alertness is not affected before participation in traffic (e.g. on bicycle).
Mirtazapine oral solution contains maltitol liquid.
Mirtazapine oral solution contains maltitol liquid. If you have been told by your doctor that you have
intolerance for some sugars, contact your doctor before taking this medicinal product.
Mirtazapine oral solution contains small amounts of ethanol
Mirtazapine oral solution contains small amounts of ethanol (alcohol), less than 100 mg per daily dose.
3.

How to take Mirtazapine

Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or
pharmacist if you are not sure.
How much to take
The recommended starting dose is 15 or 30 mg every day. Your doctor may advise you to increase
your dose after a few days to the amount that is best for you (between 15 and 45 mg per day). The dose is
usually the same for all ages. However, if you are an elderly person or if you have renal or liver disease,
your doctor may adapt the dose.
When to take Mirtazapine
→ Take Mirtazapine at the same time each day.
It is best to take Mirtazapine as a single dose before you go to bed. However your doctor may suggest to
split your dose of Mirtazapine – once in the morning and once at night-time before you go to bed. The
higher dose should be taken before you go to bed.
Take the oral solution as follows
Take the oral solution orally. Drink your prescribed dose of Mirtazapine oral solution in a glass or cup
mixed with some water. Mirtazapine oral solution comes with a metering pump to help you measure your
dose.
Preparing the Mirtazapine metering pump for use
Before you take Mirtazapine, you need to fit the pump onto the bottle.
1. Take the screw cap off the bottle
Press the cap downwards and turn it anticlockwise to break the seal. Keep pressing and turning to
unscrew the cap. This procedure is given in symbolic instructions on the top of the screw cap.
2. Fit the metering pump onto the bottle
Take the pump out of its bag. Fit it onto the bottle, putting the plastic tube inside the bottle. Press the
pump onto the top of the bottle, and turn it clockwise until it clicks tightly into place. Tighten the
pump a little more to make sure it is firmly in place.
3. Turn the nozzle to the open position
The nozzle has two positions – locked and open. When it is locked, no liquid will come out. To open
the nozzle, turn it anticlockwise as far as it will go (about one-quarter turn).
4. ‘Prime’ the metering pump before you take Mirtazapine
The very first time you press the pump, it will not measure out the right amount of Mirtazapine
solution. You need to prime it before your first dose.
• Place the bottle on a flat surface.
• Hold a glass or cup under the nozzle (see picture).
• Press the nozzle down as far as it will go, three times.
• Rinse away the liquid that comes out.
The pump is now ready for use.

Taking your dose of Mirtazapine
The pump is used to measure your dose.
1. Place the bottle on a flat surface.
2. Pour a little water into a glass or cup, and hold it under the nozzle.
3. Each time you press the nozzle, the pump dispenses 15 mg of Mirtazapine. Press the nozzle down as
far as it will go. Use a firm, smooth action - not too slow.
4. You may need to press the nozzle more than once to get the dose your doctor has prescribed (see
picture).
5. Drink the mixture all at once.
Dose
15 mg 1 press
30 mg 2 presses
45 mg 3 presses

When can you expect to start feeling better
Usually Mirtazapine will start working after 1 to 2 weeks and after 2 to 4 weeks you may start to feel
better.
It is important that, during the first few weeks of the treatment, you talk with your doctor about the
effects of Mirtazapine:
→ 2 to 4 weeks after you have started taking Mirtazapine, talk to your doctor about how this medicine
has affected you.
If you still don’t feel better, your doctor may prescribe a higher dose. In that case, talk to your doctor
again after another 2 to 4 weeks.
Usually you will need to take Mirtazapine until your symptoms of depression have disappeared for 4 to 6
months.
If you take more Mirtazapine than you should
→ If you or someone else has taken too much Mirtazapine, call a doctor straightaway.
The most likely signs of an overdose of Mirtazapine (without other medicines or alcohol) are
drowsiness, disorientation and increased heart rate. The symptoms of a possible overdose may
include changes to your heart rhythm (fast, irregular heartbeat) and/or fainting which could be symptoms
of a life-threatening condition known as Torsade de Pointes.
If you forget to take Mirtazapine
If you are supposed to take your dose once a day
• Do not take a double dose to make up for a forgotten dose. Take your next dose at the normal time.
If you are supposed to take your dose twice a day
• if you have forgotten to take your morning dose, simply take it together with your evening dose.
• if you have forgotten to take your evening dose, do not take it with the next morning dose; just skip it
and continue with your normal morning and evening doses.



if you have forgotten to take both doses, do not attempt to make up for the missed doses. Skip both
doses and continue the next day with your normal morning and evening doses.

If you stop taking Mirtazapine
→ Only stop taking Mirtazapine in consultation with your doctor.
If you stop too early, your depression might come back. Once you are feeling better, talk to your doctor.
Your doctor will decide when treatment can be stopped.
Do not suddenly stop taking Mirtazapine, even when your depression has lifted. If you suddenly stop
taking Mirtazapine you may feel sick, dizzy, agitated or anxious, and have headaches. These symptoms
can be avoided by stopping gradually. Your doctor will tell you how to decrease the dose gradually.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
4. Possible side effects
Like all medicines, this medicine can cause side effects, although not everybody gets them.
If you experience any of the following serious side effects, stop taking mirtazapine and tell your
doctor immediately.
Uncommon (may affect up to 1 in 100 people):

feeling elated or emotionally ‘high’ (mania)
Rare (may affect up to 1 in 1,000 people):

yellow colouring of eyes or skin; this may suggest disturbance in liver function (jaundice)
Not known (frequency cannot be estimated from the available data):

signs of infection such as sudden unexplainable high fever, sore throat and mouth ulcers
(agranulocytosis). In rare cases mirtazapine can cause disturbances in the production of blood cells
(bone marrow depression). Some people become less resistant to infection because mirtazapine
can cause a temporary shortage of white blood cells (granulocytopenia). In rare cases mirtazapine
can also cause a shortage of red and white blood cells, as well as blood platelets (aplastic anemia),
a shortage of blood platelets (thrombocytopenia) or an increase in the number of white blood cells
(eosinophilia).

epileptic attack (convulsions)

a combination of symptoms such as inexplicable fever, sweating, increased heart rate, diarrhoea,
(uncontrollable) muscle contractions, shivering, overactive reflexes, restlessness, mood changes,
unconsciousness and increased salivation. In very rare cases these can be signs of serotonin
syndrome.

thoughts of harming or killing yourself

severe skin reactions (Stevens-Johnson Syndrome, toxic epidermal necrolysis)
Other possible side effects with mirtazapine are:
Very common (may affect more than 1 in 10 people):
• increase in appetite and weight gain
• drowsiness or sleepiness
• headache
• dry mouth
Common (may affect up to 1 in 10 people):
• lethargy
• dizziness
















shakiness or tremor
nausea
diarrhoea
vomiting
rash or skin eruptions (exanthema)
pain in your joints (arthralgia) or muscles (myalgia)
back pain
feeling dizzy or faint when you stand up suddenly (orthostatic hypotension)
swelling (typically in ankles or feet) caused by fluid retention (oedema)
tiredness
vivid dreams
confusion
feeling anxious
sleeping problems

Uncommon (may affect up to 1 in 100 people):
• abnormal sensation in the skin e.g. burning, stinging, tickling or tingling (paraesthesia)
• restless legs
• fainting (syncope)
• sensations of numbness in the mouth (oral hypoaesthesia)
• low blood pressure
• nightmares
• feeling agitated
• hallucinations
• urge to move
Rare (may affect up to 1 in 1,000 people):
• muscle twitching or contractions (myoclonus)
• aggression
• abdominal pain and nausea; this may suggest inflammation of the pancreas (pancreatitis)
Not known (frequency cannot be estimated from the available data):
• abnormal sensations in the mouth (oral paraesthesia)
• swelling in the mouth (mouth oedema)
• swelling throughout the body (generalized oedema)
• localized swelling
• hyponatraemia
• inappropriate anti-diuretic hormone secretion
• severe skin reactions (dermatitis bullous, erythema multiforme)
• sleep walking (somnambulism)
• speech disorder
Additional side effects in children and adolescents
In children under 18 years the following adverse events were observed commonly in clinical trials:
significant weight gain, hives and increased blood triglycerides.
Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not
listed in this leaflet. You can also report side effects directly via the Yellow Card Scheme Website:

www.mhra.gov.uk/yellowcard. By reporting side effects you can help provide more information on the
safety of this medicine.
5.

How to store Mirtazapine

Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton and the bottle. The expiry
date refers to the last day of that month.
Do not store above 25 °C.
Do not use the bottle more than 6 weeks after opening.
Make a note of the date of opening of the bottle.
Do not throw away any medicines via wastewater or household waste.
Ask your pharmacist how to throw away medicines you no longer use. These measures will help to
protect the environment.
6.

Contents of the pack and other information

What Mirtazapine contains
• The active substance is mirtazapine.
Mirtazapine 15 mg/ml oral solution contains 15 mg mirtazapine per ml solution.
• The other ingredients are L-methionine, sodium benzoate (E211), saccharin sodium (E954), citric
acid monohydrate (E330), glycerol (E422), maltitol liquid (E965), orange tangerine flavour No.:
PHL-132597 (contains ethanol) and purified water.
What Mirtazapine looks like and contents of the pack
Mirtazapine oral solution is a clear, colourless - to pale yellow solution with a citrus-orange odour.
The carton contains one brown glass bottle with 66 ml of Mirtazapine oral solution and one metering
pump. The bottle containing the oral solution is closed with a child-resistant screw cap and a seal which
is broken when the cap is unscrewed. The metering pump is packed in a sealed plastic bag.
Marketing Authorisation Holder and Manufacturer
Marketing Authorisation Holder
Organon Laboratories Ltd, Cambridge Science Park, Milton Road, Cambridge, CB4 0FL, United
Kingdom
Manufacturer
Rosemont Pharmaceutical, Yorkdale Industrial Park, Braithwaite Street, Leeds, LS11 9XE, United
Kingdom
This medicinal product is authorised in the Member States of the EEA under tradename
Mirtazapine and under the following associated invented names:
Belgium
Remergon
France
Norset
Germany
Remergil
Ireland
Zispin
Luxembourg
Remergon
Spain
Rexer
United Kingdom
Mirtazapine

This leaflet was last revised January 2014

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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.

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