Patient leaflet - Imdur tablets 60 mg
1. What lmdur is and what it is used for
lmdur contains a medicine called isosorbide mononitrate. This belongs to a group of medicines called 'nitrates'.
It is used to prevent chest pain (angina).
It works by making the blood vessels relax and widen. This makes it easier for the heart to pump blood around the body.
The tablets are made so that they release the medicine slowly over a number of hours.
2. What you need to know before you take lmdur
Do not take lmdur:
If you are allergic to isosorbide mononitrate or any of the other ingredients of this medicine (listed in section 6).
If you have ever had a stroke.
If you have very low blood pressure.
If you have severe anaemia.
If you have a heart problem called 'cardiomyopathy' or 'pericarditis' or you have narrow heart valves.
If you are taking sildenafil or similar medicines called Phosphodiesterase Type 5 Inhibitors, (used for male impotence). See the section "Other medicines and lmdur".
Do not take lmdur if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking lmdur.
Warnings and precautions
Talk to your doctor or pharmacist before taking lmdur if:
You have ever had any serious damage to your heart, such as a heart attack or operation.
If any of the above apply to you, or you are not sure, talk to your doctor or pharmacist before taking lmdur.
Other medicines and lmdur
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines. This includes medicines that you buy without a prescription and herbal medicines. This is because lmdur can affect the way some medicines work and some medicines can have an effect on lmdur.
Do not take lmdur if you are taking the following medicines:
Sildenafil or similar medicines called Phosphodiesterase Type 5 Inhibitors, (used for male impotence).
Do not take lmdur if any of the above apply to you. If you are not sure, talk to your doctor or pharmacist before taking lmdur.
Pregnancy, breast-feeding and fertility
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.
Driving and using machines
You may feel dizzy after taking lmdur. If this happens, do not drive or use any tools or machines.
3. How to take lmdur
Always take this medicine exactly as your doctor or pharmacist has told you. Check with your doctor or pharmacist if you are not sure.
Taking this medicine
Swallow the tablets whole or broken in half (if this is easier to swallow). Take the tablets with half a glass of water.
Do not crush or chew the tablets.
How much to take
The recommended dose is one or two tablets a day.
Take the medicine in the morning.
Your doctor may ask you to start on a low dose so that you are less likely to have a reaction to starting lmdur.
The blister strips are marked with the days of the week. If you are taking two tablets a day, make sure you take one tablet from each strip marked with the same day of the week.
You must not take lmdur for a sudden attack of angina. If you have a sudden attack, take a glyceryl trinitrate tablet (follow the instructions given on the label).
Very occasionally, some people see the remains of the tablet in their bowel motions. This is quite normal and does not mean that the medicine has not been released.
Use in children
Do not give these tablets to children.
If you take more lmdur than you should
If you take more lmdur than you should, talk to a doctor or go to a hospital straight away. Take the medicine pack with you so the tablets can be identified.
If you forget to take lmdur
If you forget a dose, take it as soon as you remember it. However, if it is nearly time for the next dose, skip the missed dose.
Do not take a double dose to make up for a forgotten dose.
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. The following side effects may happen with this medicine:
Headaches.
Feeling sick (nausea).
Feeling dizzy.
The above problems usually disappear with time.
Other possible side effects:
Common (may affect up to 1 in 10 people)
Low blood pressure. This may make you feel faint or dizzy.
Faster heartbeat.
Headache.
Feeling dizzy.
Feeling sick (nausea).
Uncommon (may affect up to 1 in 100 people)
Being sick (vomiting).
Diarrhoea.
Rare (may affect up to 1 in 1,000 people)
Fainting.
Rash.
Itchy skin.
Very rare (may affect up to 1 in 10,000 people)
Pain in muscles.
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: 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 lmdur
Keep this medicine out of the sight and reach of children.
Do not store above 30°C.
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.
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 lmdur contains
The active substance is isosorbide mononitrate. Each tablet contains 60 mg of the active substance.
The other ingredients are aluminium silicate, paraffin special, hydroxypropylcellulose, magnesium stearate, colloidal anhydrous silica, hypromellose, macrogol, titanium dioxide and iron oxide.
What lmdur looks like and contents of the pack
lmdur Tablets 60 mg are yellow, and come in blister strips containing 7 tablets or 14 tablets, which have the days of the week shown. A pack may contain either 7, 14, 28 or 98 tablets as multiples of the 7 tablet blister strip or multiples of the 14 tablet blister strip.
lmdur Tablets 60 mg may also come in HOPE bottles of 100 tablets.
Marketing Authorisation Holder and Manufacturer
The Marketing Authorisation for lmdur Tablets 60 mg is held by TopRidge Pharma (Ireland) Limited, 6-9 Trinity Street, Dublin 2, Ireland.
lmdur Tablets 60 mg are manufactured by Laboratorios Alcala Farma, S.L., Avenida de Madrid, 82, Alcala de Henares, Madrid, 28802, Spain
To listen to or request a copy of this leaflet in Braille, large print or audio please call, free of charge:
0800 198 5000 (UK only)
Please be ready to give the following information:
Product name lmdur Tablets 60 mg
Reference number PL 46500/0002
This is a service provided by the Royal National Institute of Blind People.
This leaflet was last revised in April, 2025.
~TopRidge