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MIRTAZAPINE 45 MG FILM-COATED TABLETS
Active substance(s): MIRTAZAPINE
• localized swelling
• swelling in the mouth (mouth oedema)
• speech disorder
• inappropriate anti-diuretic hormone secretion • sleep walking (somnambulism)
• epileptic attack (convulsions)
• thoughts of harming or killing yourself
• increased creatinine kinase blood levels
• difficulty in passing urine (urinary retention)
• abnormal sensations in the mouth (oral paraesthesia)
• swelling throughout the body (generalized oedema)
• severe skin reactions (dermatitis bullous, erythema multiforme, Stevens-Johnson Syndrome,
toxic epidermal necrolysis)
• muscle pain, stiffness and/or weakness, darkening or discolouration of the urine (rhabdomyolysis)
• 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).
• 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.
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 at: http://www.mhra.gov.uk/yellowcard or
search for MHRA Yellow Card in the Google Play or Apple App Store. By reporting side
affects you can help provide more information on the safety of this medicine.
5. HOW TO STORE MIRTAZAPINE TABLETS
Keep out of the sight and reach of children.
Do not use this medicine after the expiry date which is stated on the carton. The expiry date
refers to the last day of that month.
This medicinal product does not require any special storage conditions.
Store in the original package.
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 protect the environment.
6. CONTENTS OF THE PACK AND OTHER INFORMATION
What Mirtazapine tablets contain
• The active substance is Mirtazapine. Each tablet contains 15 mg, 30 mg or 45 mg Mirtazapine.
• The other ingredients are lactose monohydrate, maize starch, hydroxypropyl cellulose, low
substituted hydroxypropyl cellulose, magnesium stearate (E470b), silica colloidal anhydrous,
hypromellose (E464) and titanium dioxide (E171).
The 15 mg tablets also contain yellow iron oxide (E172)
The 30 mg tablets also contain yellow iron oxide (E172), red iron oxide (E172) and black iron oxide (E172).
What Mirtazapine tablets look like and contents of the pack
Mirtazapine 15 mg tablets: Yellow, biconvex, capsule shaped film coated tablets with score line
on one side and 15 debossed on other side.
Mirtazapine 30 mg tablets: Reddish brown, biconvex, capsule shaped film coated tablets with
score line on one side and 30 debossed on the other side.
Mirtazapine 45 mg tablets: White, biconvex, capsule shaped film coated tablets plain on one
side and 45 debossed on other side.
Mirtazapine 15, 30, 45 mg tablets are available in PVC coated and PVdC blister packs of
10/14/28/30/40/50/56/60/70/84/90/100/200/250/500 tablets. Not all pack sizes may be marketed.
This leaflet was last updated in December 2017.
To Listen to or request a copy of this leaflet in Braille, large print
or audio please call, 02088311580 (UK only)
Please be ready to give the following information:
Mirtazapine 15mg Tablets
Mirtazapine 30mg Tablets
Mirtazapine 45mg Tablets
Marketing Authorisation Holder and Manufacturer
Warwick House, Plane Tree Crescent,
Feltham TW13 7HF, UK
PACKAGE LEAFLET: INFORMATION FOR THE PATIENT
Mirtazapine 15 mg tablets
Mirtazapine 30 mg tablets
Mirtazapine 45 mg tablets
Read all of this leaflet carefully before you start using 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 tablets are and what they are used for
2. What you need to know before you take Mirtazapine tablets
3. How to take Mirtazapine tablets
4. Possible side effects
5. How to store Mirtazapine tablets
6. Contents of the pack and other information
1. WHAT MIRTAZAPINE TABLETS ARE AND WHAT THEY ARE USED FOR
Mirtazapine is one of a group of medicines called antidepressants. Mirtazapine tablets are 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 TABLETS
Do not take Mirtazapine tablets:
• 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 tablets.
• 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 tablets.
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 side-effects 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 straight away.
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 tablets:
• if you have, or have ever had one of the following conditions.
→ Tell your doctor about these conditions before taking Mirtazapine tablets, 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 straight away;
- 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 failure, or take certain medicines that may affect heart’s rhythm.
• if you develop signs of infection such as inexplicable high fever, sore throat and mouth ulcers.
→ Stop taking Mirtazapine tablets 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 tablets
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.
Do not take Mirtazapine tablets 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 tablets 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 so-called 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
• 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
• 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
• 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.
Mirtazapine tablets with food, drink and alcohol
You may get drowsy if you drink alcohol while 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 take 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 tablets contain lactose
Mirtazapine film-coated tablet contains lactose. If you have been told by your doctor
that you have an intolerance to some sugars, contact your doctor before taking this
3. HOW TO TAKE MIRTAZAPINE TABLETS
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 tablets
→Take Mirtazapine tablets at the same time each day.
It is best to take Mirtazapine tablets as a single dose before you go to bed. However your doctor
may suggest to split your dose of Mirtazapine tablets - 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.
How to take Mirtazapine tablets:
Take your tablets orally. Swallow your prescribed dose of Mirtazapine tablets without chewing,
with some water or juice. The score line is only there to help you break the tablet if you have
difficulty swallowing it whole.
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 tablets than you should
If you or someone else have taken too much Mirtazapine, call a doctor straight away.
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 tablets
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 dose at 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 tablets
→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 medicine, ask your doctor or pharmacist.
4. POSSIBLE SIDE EFFECTS
Like all medicines, this medicine can cause side effects, although not everybody gets them.
Possible side effects of Mirtazapine tablets are:
Very common (may affect more than 1 in 10 people):
• increase in appetite and weight gain
• drowsiness or sleepiness
• dry mouth
Common (may affect up to 1 in 10 people):
• shakiness or tremor
• rash or skin eruptions (exanthema)
• back pain
• vivid dreams
• feeling anxious
• sleeping problems
• pain in your joints (arthralgia) or muscles (myalgia)
• feeling dizzy or faint when you stand up suddenly (orthostatic hypotension)
• swelling (typically in ankles or feet) caused by fluid retention (oedema)
Uncommon (may affect up to 1 in 100 people):
• restless legs
• fainting (syncope)
• low blood pressure
• feeling agitated
• Feeling elated or emotionally ‘high’ (mania)
• urge to move
• sensations of numbness in the mouth (oral hypoaesthesia)
• abnormal sensation in the skin e.g. burning, stinging, tickling or tingling (paraesthesia)
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)
• Yellow colouring of eyes or skin; this may suggest disturbance in liver function
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.