ADALAT RETARD 20MG FILM-COATED TABLETS
Active substance(s): NIFEDIPINE / NIFEDIPINE / NIFEDIPINE
Adalat® Retard 20mg Film-Coated Tablets
Patient Information Leaflet
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 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.
Your medicine is called Adalat retard 20mg Film-Coated Tablets but will be
referred to as Adalat retard throughout this leaflet.
What is in this leaflet
1 What Adalat retard is and what it is used for
2 What you need to know before you take Adalat retard
3 How to take Adalat retard
4 Possible side effects
5 How to store Adalat retard
6 Contents of the pack and other information
What Adalat retard is and what it is used for
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
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.
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.
What you need to know before you take Adalat
Do not take Adalat retard:
* 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
* If you are taking rifampicin, an antibiotic.
* If you have been told that you have a narrowing of the aortic heart
* 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 (malignant
* 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
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
* 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 retard.
Talk to your doctor before you take Adalat retard if any of these
apply to you.
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
* 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
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
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 conditions).
* 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 (anti-fungal medicines).
* Indinavir, nelfinavir, ritonavir, saquinavir or amprenavir (to treat HIV).
* 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
You can take Adalat retard either with or without food.
Do not drink grapefruit juice or eat grapefruit while taking Adalat
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.
Pregnancy and breast-feeding
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.
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.
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
* 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 to.
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.
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 unconsciousness.
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
Adalat Retard 20mg Film-Coated Tablets
Patient Information Leaflet (continued)
Possible side effects
Like all medicines, this medicine can cause side effects, although not
everybody gets them.
Serious side effects
If you notice:
* 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
* other allergic reactions causing swelling under the skin (possibly severe
and including swelling of the larynx that may result in a life-threatening
* fast heart beat (tachycardia)
* shortness of breath (frequency not known) 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 Necrolysis)
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
Other side effects
(Frequency not known: frequency cannot be estimated from the available
* 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
All of these symptoms usually go away when treatment with Adalat retard is
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 (see details below). By reporting side effects you can help
provide more information on the safety of this medicine.
Yellow Card Scheme
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 moisture. Protect
from strong light and only remove the tablet from the blister strip when you
are about to take it.
Do not use after the expiry date which is marked on both the outer carton
and on each blister strip of tablets.
If your tablets become discoloured or show any other signs of deterioration,
consult your pharmacist who will tell you what to do.
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 to protect the environment.
Contents of the pack and other information
What Adalat Retard contains
Each film-coated tablet contains 20mg nifedipine. Adalat Retard tablets also
contain microcrystalline cellulose, maize starch, lactose monohydrate,
polysorbate 80, magnesium stearate, hypromellose, macrogol 4000, red iron
oxide (E172) and titanium dioxide (E171).
What this medicine looks like and contents of the pack.
The tablets are round, film-coated rose-pink, biconvex, marked “A20” on one
face and the bayer logo (bayer cross) on the other. They are available in
blister packs of 60 or 56 tablets.
Manufacturer and Licence Holder
This medicine is manufactured by Bayer Pharma AG, Leverkusen, Germany
and procured from within the EU and repackaged by the Product Licence
Holder: Lexon (UK) Limited, Unit 18, Oxleasow Road, East Moons Moat,
Redditch, Worcestershire, B98 0RE.
If you have any questions or are not sure about anything, ask your doctor or
pharmacist. They will have additional information about this medicine and
will be able to advise you.
PL 15184/1248 - Adalat Retard 20mg Film-Coated Tablets
Adalat is a registered trademark of Bayer AG.
Revision date: 09/02/17
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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.