Monomax SR 40 mg & 60 mg Capsules
isosorbide mononitrate
Read all of this leaflet carefully before you start taking this medicine.
- 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. Do not pass it on to others. It may
harm them, even if their symptoms are the same as yours. - If any of the side effects get serious, or if you notice any side effects not listed
in this leaflet, please tell your doctor or pharmacist.
In this leaflet:
1. What Monomax is and what it is used for
2. Before you take Monomax
3. How to take Monomax
4. Possible side effects
5. How to store Monomax
6. Further information
What Monomax is and what it is used for
Monomax SR Modified-release Capsules contain isosorbide mononitrate which belongs to
a group of medicines called nitrates that act on the cardiovascular system (the heart and
blood vessels). Monomax has been given to you by your doctor or pharmacist to reduce
the frequency of your anginal attacks (chest pains). They are called modified-release
capsules because they are manufactured in a way that allows the isosorbide mononitrate
to be released and slowly absorbed by your body over a period of several hours.
In angina, isosorbide mononitrate works by opening up the arteries supplying the heart
muscle and this allows more blood and oxygen to reach the muscle, decreasing the
chances of angina (chest pains) occurring when extra strain is placed upon the heart.
Before you take Monomax
Do not take Monomax:
if you are taking the drug sildenafil, for the treatment of male erectile
dysfunction (see also: Section 2 - taking other medicines)- if you are allergic to isosorbide mononitrate, other nitrates (e.g glyceryl trinitrate or isosorbide dinitrate) or any of the other ingredients in Monomax
- if you have suffered a stroke or have any other condition which may affect the blood supply to your brain
- if you suffer from low blood pressure
- if you suffer from a reduction in red blood cells which can make the skin pale and
cause weakness and breathlessness - if you have been told that you have a problem with your heart. Ask your doctor if
you are not sure if this applies to you - to treat an angina attack as it occurs. Your doctor will probably have given you
another tablet to take for sudden attacks.
Take special care with Monomax and always tell your doctor or pharmacist if:
- you suffer from increased pressure in your eyes
- you suffer from an underactive thyroid gland
- you suffer from an abnormally low body temperature
- you suffer from poor health caused by a poor diet
- you suffer from severe liver or kidney disease
- you have been told that you have a narrowing of the valves in your heart
- you become dizzy, light headed or faint when you stand up
- you have suffered from a head injury or bleeding in the brain.
Taking other medicines
Before starting treatment, please tell your doctor or pharmacist if you are taking or have
recently taken any other medicines, including medicines obtained without a prescription.
If you have to go to a doctor, dentist or hospital for any reason, tell them that you are
taking Monomax.
In particular, tell your doctor or pharmacist if you are taking:
- medicines for the treatment of high blood pressure, such as hydralazine or minoxidil
- medicines to treat the symptoms of depression, such as amitriptyline or imipramine
- medicines to treat a mental condition, such as chlorpromazine or methotrimeprazine
- water tablets, such as frusemide
Taking these types of medicines with Monomax can increase the risk of low blood
pressure occurring, especially if you are elderly.
Do not take sildenafil, used for the treatment of erectile dysfunction at the
same time as Monomax. If taken at the same time it could cause a severe fall in
blood pressure resulting in collapse, unconciousness and may be fatal.
Taking Monomax with food or drink
If you drink alcohol while you are taking Monomax it can increase the risk of low blood
pressure occurring, especially if you are elderly.
Pregnancy and breast-feeding:
Do not take Monomax if you are pregnant, trying to become pregnant or are breast-feeding.
Driving and using machines:
If you feel faint, dizzy or light headed when you stand up or move suddenly after taking
Monomax, then do not drive or operate machinery.
Important information about some of the ingredients of Monomax:
Monomax contains lactose monohydrate and sucrose. If you have been told by your
doctor that you have an intolerance to some sugars, contact your doctor before taking
this medicinal product.
How to take Monomax
Always take Monomax exactly as your doctor or pharmacist has told you to. You should
check with your doctor or pharmacist if you are not sure.
The label on the carton will tell you how many capsules you should take and when. It is
very important that you take your capsules regularly. Do not stop treatment even if
you feel better unless told to do so by your doctor.
Monomax is formulated so that you only have to take your capsules once a day. It is
important that you take your capsules at the same time each day, preferably in the
morning. Your capsule must be swallowed whole with a glass of water. Do not break or
chew your capsules.
Adults and the elderly: the usual dose is 40 mg or 60 mg once a day. Your doctor may decide to increase your dose to a maximum of 120 mg of Monomax once a day.
If you are elderly and suffer from low blood pressure, liver or kidney disease, your doctor
may prescribe a lower dose for you to take.
Do not stop taking your medicine until your doctor tells you.
Children must not take this medicine.
If you take more Monomax than you should
If you accidentally take more Monomax than you should, contact your nearest casualty
department or tell your doctor or pharmacist immediately. Remember to take the pack
and any remaining capsules with you.
If you forget to take Monomax
Do not worry. Simply leave out that dose completely and then take your next dose at
the right time. Do not take a double dose to make up for a missed dose.
If you have any further questions on the use of this product, ask your doctor or
pharmacist.
Possible side effects
Like all medicines, Monomax can cause side effects, although not everyone gets them.
If you experience a headache when you first start taking your capsules, contact your
doctor or pharmacist immediately. Your doctor or pharmacist may need to adjust your
dose.
The following side effects do not usually last long and are most likely to occur when you
first start to take your medicine or if your dose has been increased. If they continue or if
you are worried, contact your doctor or pharmacist immediately:
- light headedness when you stand up or move suddenly
- faintness
Also, some people experience:
- flushing
- dry skin rashes
- dizziness
- feeling sick
- itchy skin
If any of the side effects get serious, or if you notice any side effects not listed
in this leaflet, please tell your doctor or pharmacist.
How to store Monomax
- Keep out of the reach and sight of children.
- Do not store above 25oC. Store in the original packaging.
- Do not use Monomax after the expiry date which is stated on the blister and carton. The expiry date refers to the last day of that month.
- Medicines should not be disposed of via wastewater or household waste. Ask your
pharmacist how to dispose of medicines no longer required. These measures will help
protect the environment.
Further information
What Monomax contains:
- The active substance in your capsules is isosorbide mononitrate. Each capsule
contains 40 mg or 60 mg of isosorbide mononitrate. - The other ingredients are lactose monohydrate, sucrose, maize starch, shellac (E904), talc, copolymer of methacrylic acid and methyl methacrylate and copolymer of ethyl
acrylate, methyl methacrylate, trimethylammonioethyl methacrylate chloride, gelatine,
titanium dioxide (E171) and iron oxide (E172).
What Monomax looks like and the contents of the pack:
Monomax SR 40 mg and 60 mg Modified-release Capsules are white with “ISMN SR” and
“40” or “60” printed on the capsule in black ink respectively. They are available in blister
packs of 28 capsules.
Marketing Authorisation Holder and Manufacturer:
The Marketing Authorisation holder and manufacturer is:
Is this leaflet hard to see or read? Phone 0161 488 5555 for help.
This leaflet was last approved in 08/2009
01811 V2/CP0028/2
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