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Active substance(s): MIZOLASTINE

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Package leaflet:
Information for the user

Mizollen 10 mg
modified-release tablets
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 symptoms 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 Mizollen is and what it is used for.
2. What you need to know before you take Mizollen.
3. How to take Mizollen.
4. Possible side effects.
5. How to store Mizollen.
6. Contents of the pack and other information.
1. What Mizollen is and what it is used for.
The active ingredient in Mizollen is mizolastine. Mizolastine is
an antihistamine.
Mizollen is used to reduce the symptoms of:
• hay fever (seasonal allergic rhinoconjunctivitis)
• other allergic reactions causing irritation of the eyes and nose
(perennial allergic rhinoconjunctivitis)
• urticaria (an itchy skin rash, like nettle rash).
2. What you need to know before you take Mizollen.
Do not take Mizollen
 if you are allergic to mizolastine or any of the other ingredients
of this medicine (listed in section 6)
 if you are taking a macrolide antibiotic (such as erythromycin,
clarithromycin, azithromycin)
 if you are taking an imidazole antifungal medicine (such as
ketoconazole, fluconazole, itraconazole, used to treat fungus
 if you have liver problems
 if you have heart problems
 if you have ever had an irregular heart beat or a slow heart
 if you have an abnormal ECG (electrical recording of your
heart beat)
 if you are already taking medicines for an irregular heart beat
 if you have abnormal levels of salts in the blood, in particular
low potassium levels.
If any of these apply to you, or if you are not sure, talk to your
doctor or pharmacist before you take this medicine.

Warnings and precautions
In the elderly - Mizollen can make some people feel drowsy
and cause a fast or irregular heart beat - these effects are more
likely in the elderly.
Blood tests
Your doctor may carry out regular blood tests and other tests to
check how well the medicine is working for you. This is more
likely if:
- You have diabetes (your blood sugar level is uncontrolled).
- The levels of salt substances in your blood sometimes change
(electrolyte imbalance).
- You have problems with your heart beat (cardiac arrhythmias).
Other medicines and Mizollen
Tell your doctor or pharmacist if you are taking, or have recently
• a macrolide antibiotic such as erythromycin, clarithromycin,
• an imidazole antifungal medicine, such as ketoconazole,
fluconazole, itraconazole.
These medicines should not be taken with Mizollen.
You should also tell your doctor or pharmacist if you are taking:
• cimetidine (used to treat stomach ulcers)
• ciclosporin (an immunosuppressant)
• nifedipine (used to treat high blood pressure or heart disease)
because these drugs can affect the levels of Mizollen
(mizolastine) in your blood.
Tell your doctor or pharmacist if you are taking, have recently
taken or might take any other medicines.
Mizollen with food and drink
Mizollen can be taken with food or in between meals.
Mizollen does not alter the effects of alcohol. However, just
like with any other medicine, you should not drink alcohol in
excess when taking Mizollen.
Pregnancy and breast-feeding
Ask your doctor or pharmacist for advice before taking any
The safety of Mizollen in human pregnancy has not been
established. As with all medicines, Mizollen should be avoided
in pregnancy, particularly during the first three months.
Mizolastine passes into breast milk, therefore Mizollen should
not be used during breast-feeding.
Driving and using machines
You may feel sleepy after taking this medicine. If this happens,
do not drive or use any tools or machines.
Mizollen contains lactose
If you have been told by your doctor that you have an intolerance
to some sugars, contact your doctor before taking Mizollen.
Mizollen contains hydrogenated castor oil which can
cause stomach upset and diarrhoea.

Always take this medicine exactly as your doctor has told you.
You should check with your doctor or pharmacist if you are not
For adults, including the elderly and children aged 12 years
and over.
The usual dose is one tablet (10 mg) daily.
The tablets should be taken with plenty of water.
If you take more Mizollen than you should
If you think you have taken too many tablets of Mizollen contact
your doctor or nearest hospital emergency department immediately.
If you forget to take Mizollen
If you have forgotten to take a tablet of Mizollen, take the next
tablet at the usual time. Do not take a double dose to make up
for a forgotten tablet.
If you stop taking Mizollen
Inform your doctor if you wish to stop your treatment before
finishing the course of treatment.
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.
Tell your doctor immediately and stop taking Mizollen if you
experience dizziness, swelling of the face, lips, tongue or
throat and difficulty in breathing, as these may be signs of
a serious allergic reaction.
Common side effects (may affect up to 1 in 10 people):
• dry mouth, headache, dizziness, drowsiness, lack of energy
• diarrhoea, nausea
• stomach pain, indigestion
• increased appetite associated with weight gain.
Uncommon side effects (may affect up to 1 in 100 people):
• anxiety and depression
• changes in blood tests which show how the liver is working
• low blood pressure, fast or irregular heart rate
• joint and muscle pains.
Very rare side effects (may affect up to 1 in 10,000 people):
• low numbers of white blood cells which make infections
more likely
• serious allergic reaction which can cause dizziness, swelling
of the face, lips, tongue or throat and difficulty breathing
• generalised skin rash (nettle rash), itching
• fainting.
Some people taking Mizollen have also experienced: difficulty
in breathing or wheezing, worsening of their asthma or small
changes in blood sugar levels and blood salts. Your doctor may
organise blood tests to monitor your progress.
Some antihistamines (anti-allergy medicines) have been associated
with an abnormality in the electrical recording of the heart beat,
increasing the risk of an irregular heartbeat.

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: or search for MHRA
Yellow Card in the Google Play or Apple App Store.
By reporting side effects you can help provide more information
on the safety of this medicine.
5. How to store Mizollen.
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 after EXP. The expiry date refers to the last day
of that month.
Store in the original package in order to protect from moisture.
Refer to the storage conditions on the carton.
Do not use Mizollen if you notice that the tablets become
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 Mizollen contains
- The active substance is mizolastine
- Each tablet contains 10mg of mizolastine
- The other ingredients are:
• Core: hydrogenated castor oil, lactose monohydrate,
microcrystalline cellulose, tartaric acid, povidone,
anhydrous colloidal silica, magnesium stearate.
• Film-coating: hypromellose, titanium dioxide (E171),
propylene glycol.
What Mizollen looks like and contents of the pack
The tablets are oblong, white with a scored line on one side
and a mark "MZI 10" on the reverse side.
It is presented in boxes of 4, 7, 10, 15, 20, 30, 50, or 100 in
Aluminium (oPA/Aluminium/PVC) blisters, in Aluminium/PVC
blisters or in polypropylene tablet container with polyethylene
Not all pack sizes are marketed.
Marketing Authorisation Holder and Manufacturer
Marketing Authorisation Holder
One Onslow Street - Guildford - Surrey - GU1 4YS
Tel: 0845 372 7101
Sanofi Winthrop Industrie
30-36 Avenue Gustave Eiffel - 37000 Tours
This leaflet was last approved in 11/2017.
© Sanofi, 2003 - 2017


3. How to take Mizollen.

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