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ADALAT RETARD 20MG MODIFIED-RELEASE TABLETS
Active substance(s): NIFEDIPINE
By austino at 4:23 pm, Oct 05, 2015
Package leaflet - information for the user
Adalat® retard 20mg
Read all of this leaflet carefully before you start taking this
medicine because it contains important information for you.
The name of your medicine is Adalat retard 20mg modified-release
tablets but will be referred to as Adalat retard throughout the remainder
of this leaflet.
This product is also available in lower strength: 10mg.
• 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
What Adalat retard is and what it is used for
What you need to know before you take Adalat retard
How to take Adalat retard
Possible side effects
How to store Adalat retard
Contents of the pack and other information
1. WHAT ADALAT RETARD IS AND WHAT IT IS USED
Adalat retard contains nifedipine, which belongs to a group of
medicines called calcium antagonists.
Adalat retard is used to treat high blood pressure or angina (chest
Tell your doctor:
• If your chest pain (angina) gets worse (comes on more often or
more severely) over a matter of hours or days. You may be advised
not to take Adalat retard.
• If you have chest pains after taking your first dose of Adalat
retard. Your doctor may wish to change your treatment.
• If you notice increased breathlessness.
• If you notice swelling of the ankles.
Tell your doctor before you take the next dose if any of
these apply to you.
Also tell your doctor:
• If you are giving a urine sample. Adalat retard may interfere with
the results of certain urine tests.
• If you are a man who has been unable to father a child by in vitro
fertilisation. Drugs like Adalat retard have been shown to impair sperm
Other medicines and Adalat retard
Tell your doctor if you are taking, have recently taken or might take
any other medicines.
Some medicines may affect the way Adalat retard works.
Tell your doctor if you are taking:
• Other medicines to treat high blood pressure.
• Rifampicin (an antibiotic).
• Cimetidine (to treat stomach ulcers).
• Digoxin, diltiazem, quinidine or beta-blockers (to treat heart
• Quinupristin/dalfopristin (a combination antibiotic).
• Phenytoin, carbamazepine or valproic acid (to treat epilepsy).
• Cisapride (to treat reduced movements of the gullet and stomach).
• Magnesium sulphate injections during pregnancy (may cause a
severe fall in blood pressure).
• Erythromycin (an antibiotic).
• Ketoconazole, itraconazole or fluconazole (antifungal medicines).
• Indinavir, nelfinavir, ritonavir, saquinavir or amprenavir (to treat
• Fluoxetine or nefazodone (to treat depression).
• Tacrolimus (to prevent the rejection of transplanted organs).
• Phenobarbital (usually used to treat insomnia or anxiety).
Adalat retard with food and drink
For high blood pressure: Adalat retard works by relaxing and
expanding the blood vessels. This makes the blood flow more easily
and lowers blood pressure. Lower blood pressure reduces the strain
on your heart.
You can take Adalat retard either with or without food.
For angina: Adalat retard works by relaxing and expanding the arteries
supplying the heart. This allows more blood and oxygen to reach the
heart and decreases the strain on it. Your angina attacks will be less
severe and less frequent if there is less strain on the heart.
Do not start taking Adalat retard within 3 days of drinking grapefruit
juice or eating grapefruit. Tell your doctor if you have had grapefruit or
grapefruit juice in this time. Also, do not drink grapefruit juice or eat
grapefruit whilst taking Adalat retard. Grapefruit juice is known to
increase the blood levels of the active ingredient, nifedipine. This effect
can last for at least 3 days.
2. WHAT YOU NEED TO KNOW BEFORE
YOU TAKE ADALAT RETARD
Do not drink grapefruit juice or eat grapefruit while taking Adalat
Do not take Adalat retard:
Pregnancy and breast-feeding
• If you have had a heart attack within the last month.
• If you get a sudden angina attack. Adalat retard will not help
relieve symptoms of angina quickly.
• If you have unstable angina.
• If you are allergic to nifedipine, any other similar medicines (known
as dihydropyridines) or any of the other ingredients of this medicine
(listed in section 6).
• If you are taking rifampicin, an antibiotic.
• If you have been told that you have a narrowing of the aortic
heart valve (stenosis).
• If you have ever had a collapse caused by a heart problem
(cardiogenic shock), during which you became breathless, pale and
had a cold sweat and dry mouth.
• If your blood pressure continues to rise despite treatment
• If you have been told to avoid lactose, that you have a hereditary
condition called Lapp lactase deficiency or glucose-galactose
Tell your doctor and do not take Adalat retard if any of
these apply to you.
If you are pregnant, think you may be pregnant or are planning to have
a baby, ask your doctor for advice before taking this medicine.
Warnings and precautions
Talk to your doctor before taking Adalat retard
• If you have low blood pressure and you were prescribed Adalat
retard for your angina. Your blood pressure may be decreased further
by this treatment.
• If you have a heart condition where your heart cannot cope with
increased strain (poor cardiac reserve).
• If you are pregnant.
• If you are breast-feeding. If you need to take Adalat retard, you
should stop breast-feeding before you start to take this medicine.
• If you are a diabetic. The treatment for your diabetes may need to
be adjusted. If you have any questions about this, ask your doctor.
• If you are on kidney dialysis. If you have a very high blood
pressure and a low blood volume, you might experience a sudden drop
in blood pressure when you take Adalat retard.
• If your liver is not working properly. Your doctor may need to do
some blood tests. You may also be given a lower dose of Adalat
• Talk to your doctor before you take Adalat retard if any of these
apply to you.
You may be able to use Adalat retard but only after special
consideration and agreement by your doctor.
Do not take Adalat retard if you are breast-feeding.
If you need to take Adalat retard, you should stop breast-feeding
before you start taking this medicine.
Driving and using machines
Adalat retard may make you feel dizzy, faint, extremely tired or have
visual disturbances. Do not drive or operate machinery if you are
affected in this way.
This may be more likely when you first start treatment, if you change
tablets, or if you have drunk alcohol.
Adalat retard contains lactose monohydrate
If you have been told by your doctor that you have an intolerance to
some sugars, contact your doctor before taking this medicinal product.
3. HOW TO TAKE ADALAT RETARD
Always take this medicine exactly as your doctor has told you. Check
with your doctor if you are not sure.
• To start with, you may be given a lower strength (10 mg) tablet
called Adalat retard 10 mg. This allows your doctor to monitor how you
are responding so that the best long-term dose can be identified.
• The usual maintenance dose of Adalat retard (20 mg strength) is 1
tablet, every 12 hours (i.e. twice per day), but your doctor may
increase or decrease the dose depending on how well your blood
pressure or angina is being controlled. The maximum dose is 2 tablets
(40 mg) every 12 hours.
• Lower doses may be prescribed for older people.
• If you have problems with your liver you are likely to be given
Adalat retard 10 mg, at least to begin with.
• Swallow the tablets whole with a little water.
• Continue to take the tablets for as long as your doctor has told you
Do not take them with grapefruit juice.
You can take Adalat retard either with or without food.
Use in children and adolescents: Adalat retard is not recommended
for use in children and adolescents below 18 years of age, because
there are only limited data on the safety and efficacy in this population.
ASSESSED AGAINST UK PIL DATED MAY 2015
If you take more Adalat retard than you should
Get medical help immediately. If possible, take your tablets
or the box with you to show the doctor.
Taking too many tablets may cause your blood pressure to become
too low and your heartbeats to speed up or slow down. It may also
lead to an increase in your blood sugar level or an increase in the
acidity of your blood, swelling in the lungs, low blood oxygen levels
and disturbances in consciousness, possibly leading to
If you forget to take Adalat retard
Take your normal dose immediately and continue taking your tablets
as prescribed, waiting 12 hours before taking your next 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
4. POSSIBLE SIDE EFFECTS
Other side effects
(Frequency not known: frequency cannot be estimated from the
• a reduction in the number of white blood cells (leucopenia)
• a more severe decrease in a specific class of white blood cell
• increased blood sugar (hyperglycaemia)
• decreased skin sensitivity (hypoaesthesia)
• drowsiness (somnolence)
• eye pain
• chest pain (angina pectoris)
• heartburn or indigestion (gastroesophageal sphincter insufficiency)
• yellowing of the whites of the eyes or skin (jaundice)
• sensitivity to light (photosensitivity allergic reaction)
• small, raised areas of bleeding in the skin (palpable purpura)
• joint pain
• muscle pain
Like all medicines, this medicine can cause side effects, although not
everybody gets them.
All of these symptoms usually go away when treatment with Adalat
retard is stopped.
Serious side effects
If you notice:
Reporting of side effects
• Severe, sudden generalised allergic reaction including very rarely
life-threatening shock (e.g. difficulty in breathing, drop of blood
pressure, fast pulse), swelling (including potentially life-threatening
swelling of the airway)
• other allergic reactions causing swelling under the skin (possibly
severe and including swelling of the larynx that may result in a lifethreatening outcome)
• fast heart beat (tachycardia)
• shortness of breath or difficulty breathing
• mild to moderate allergic reactions
• itching (possibly severe), a rash or hives
Contact your doctor immediately and do not take the next
dose as these may be the first signs of allergic reaction which
may become severe.
If you develop:
• a skin reaction or blistering/peeling of the skin and/or mucosal
reactions (in the mouth/nose or at the penis/vagina) (Toxic Epidermal
Contact your doctor immediately before you continue
treatment as these may be signs of a severe reaction.
Less serious side effects
Apart from the side effects listed above, these are the other side
effects of Adalat retard, starting with the more common ones:
Common side effects
(These may affect up to 1 in 10 people)
• general feeling of being unwell
• swelling, particularly of the ankles and legs
Uncommon side effects
(These may affect up to 1 in 100 people)
• stomach pain (abdominal pain)
• unspecific pain
• low blood pressure when standing up (symptoms include fainting,
dizziness, light headedness, occasional palpitations, blurred vision and
• irregular heartbeat (palpitations)
• dry mouth
• indigestion or upset stomach
• wind (flatulence)
• feeling sick (nausea)
• muscle cramps
• joint swelling
• sleep disorders
• anxiety or nervousness
• reddening of the skin
• nose bleeds
• nasal congestion
• sensation of spinning or whirling motion (vertigo)
• increase in the need to pass water (urinate)
• painful or difficult urination
• inability to achieve or maintain an erection (impotence)
• blurred vision
• temporary increase in certain liver enzymes
Rare side effects
(These may affect up to 1 in 1,000 people)
• pins and needles
• inflammation of the gums, tender or swollen gums, bleeding gums
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 (see details below). By reporting side effects
you can help provide more information on the safety of this medicine.
Yellow Card Scheme
5. HOW TO STORE ADALAT RETARD
Keep this medicine out of the sight and reach of children.
Store your medicine in its original container. Protect from strong light
and only remove the tablet from the blister strip when you are about to
Protect from moisture.
Do not store above 25°C.
Do not use after the expiry date which is marked on both the outer
carton and on each blister strip of tablets.
Do not dispose of medicines in household rubbish. Any unused Adalat
retard tablets should be returned to a pharmacist (chemist) who will
dispose of them properly. This helps the environment.
6. CONTENTS OF THE PACK AND OTHER INFORMATION
What Adalat retard contains
Each tablet contains 20mg of the active ingredient, nifedipine.
Adalat retard tablets also contain: microcrystalline cellulose, maize
starch, lactose, polysorbate 80, magnesium stearate, hypromellose,
macrogol 4000, red iron oxide (E172) and titanium dioxide (E171).
What’s in the pack
Each tablet is grey-pink and round, marked with ‘A20’ on one side and
Bayer logo on the reverse.
Each pack contains 60 tablets.
Manufacturer: Bayer Pharma AG, D-51368 Leverkusen, Germany.
Procured from within the EU and repackaged by: Amimed Direct
Ltd, Hendon, London, NW9 6AQ.
Product Licence Holder: Sam Pharma Ltd, Unit 20 Garrick Industrial
Estate, Irving Way, Hendon, London, NW9 6AQ.
PL No: 33902/0356
This leaflet was last revised: 07/09/2015
Adalat® is a registered trademark of Bayer AG, Germany
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.