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Half Securon® SR
120 mg modified release
(verapamil hydrochloride)
This product is available as the above name
but will be referred as Half Securon SR
throughout the following leaflet. Please note
this leaflet also contains information about
Securon® SR 240 mg modified release

Read all of this leaflet carefully
before you start taking this
• Keep this leaflet as you may
need to read it again
• For further information or
advice ask your doctor or
• This medicine is for you only
and should never be given to
anyone else, even if they
appear to have the same
symptoms as you
• Tell your doctor or pharmacist if
you experience any side effects

Leaflet contents:
1. What is Half Securon SR and what is it
used for?
2. What should you know before taking your
3. How should you take your tablets?
4. Possible side effects.
5. How should you store your tablets?
6. Further information.

1.What is Half Securon SR and what
is it used for?
Half Securon SR tablets belong to a group of
medicines called calcium channel blockers.
Calcium channel blockers change the amount
of calcium getting into the muscle cells in your
heart and blood vessels. This can change the
strength and speed with which your heart
beats. It also opens up the blood vessels so
blood can be pumped around the body more
easily. This helps more oxygen to get to your
heart muscle and can lower your blood
Half Securon SR tablets are used to treat
hypertension (high blood pressure) and to
prevent angina (chest pain) attacks. The
tablets may also be prescribed following a
heart attack, to prevent another attack
The active ingredient in Half Securon SR
tablets is verapamil hydrochloride.
2. What

should you
taking your tablets?



If the answer to any of the following
questions is ‘YES’ please tell your doctor
or pharmacist BEFORE taking any tablets:
• Are you sensitive (allergic) to verapamil or
any of the ingredients in the tablets? (See
Section 6).
• Are you pregnant or planning to become
pregnant, or are you breast feeding?
• Do you have very low blood pressure?
• Do you have or have you ever suffered from
heart problems such as heart failure?
• Do you have an abnormally slow or irregular
heart beat?
• Have you recently had a heart attack?
• Do you have liver or kidney problems?
• Do you have or have you ever suffered from
heart problems such as heart failure or the
heart condition called Wolff-Parkinson-White
• Do you have a condition where the nerve to
muscle transmission is affected e.g.
myasthemia gravis, Lambert-Eaton syndrome,
advanced Duchenne muscular dystrophy?

• Are you being treated with ivabradine (for heart
Taking other medicines.
Please tell your doctor or pharmacist if you
are taking any medicines with or without a
prescription or have recently taken any of
the following medicines:
• beta-blockers used to treat high blood
pressure and heart conditions (these include
atenolol, propranolol and metoprolol)
• alpha blockers used to treat high blood
pressure and heart conditions (these include
prazosin and terazosin)
• diuretics (also called “water pills”)
• medicines known as “statins” such as
atorvastatin, lovastatin, simvastatin used to
lower cholesterol levels
• any other medicine for high blood pressure
or an abnormal heart beat (arrhythmia) such
as quinidine, flecainide, digoxin and digitoxin
• dabigatran, used to thin blood
• medicines containing ivabradine for the
treatment of certain heart diseases
• medicines used to treat depression
(including the herbal product St John’s
Wort), anxiety or psychosis. These may
include imipramine, buspirone and lithium.
• medicines known as immunosuppressants
such as ciclosporin, sirolimus, everolimus
and tacrolimus. These are used to prevent
organ transplant rejection.
• glibenclamide, used to treat certain types of
• aspirin, a non-steroidal anti-inflammatory
painkiller (NSAID) used to relieve pain and
reduce fever
• almotriptan, used to treat migraine
• midazolam, used as a sedative or
• theophylline, used to treat asthma
• doxorubicin, an anti-cancer medicine
• cimetidine, used to treat indigestion or
stomach ulcers
• carbamazepine, phenytoin or phenobarbital
(phenobarbitone). These medicines are
used as anti-convulsants.
• rifampicin, used to treat tuberculosis and
other types of infection
• ritonavir, used to treat HIV
• erythromycin, clarithromycin and telithromycin,
used to treat certain types of infection

• colchicine or sulfinpyrazone, used to treat
Tell your surgeon or dentist that you are taking
Half Securon SR if surgery is planned as it
may affect the anaesthetic used.
Driving and operating machines
Do NOT drive, operate machinery or do
anything that requires you to be alert, until you
know how the tablets affect you.
Half Securon SR can make some people feel
dizzy, especially when they first start to take
the tablets.
Other important information
Do NOT drink grapefruit juice whilst taking
your tablets as it can affect the absorption of
this medicine. This does not occur with other
fruit juices such as orange, apple or tomato
Drinking alcohol
Half Securon SR will increase the time your
body takes to get rid of alcohol. This means
that you may not have to drink as much for
your blood alcohol levels to be above the legal
limit to drive. It will also take you longer to
sober up.
Taking Half Securon SR with food and
Your tablets can be taken with a glass of water
to help you swallow them. It does not matter if
you have eaten, so they can be taken with or
without food.
Pregnancy and breast feeding
Please discuss with your doctor if you are
pregnant, planning to become pregnant or are
breast feeding.
3. How should you take your tablets?
ALWAYS take your tablets exactly as your
doctor has told you. If you are not sure refer to
the label on the carton or check with your
doctor or pharmacist.
TAKE YOUR TABLETS with a glass of water.
You should swallow the tablets without
chewing or crushing them. It does not matter if
you have not eaten.

The number of tablets that you will need to
take will depend on what you are being treated
Hypertension (high blood pressure)
The usual dose is one Securon SR 240 mg
tablet a day. If you have not taken Securon SR
240 mg before, your doctor may prescribe a
lower dose such as a Half Securon SR 120 mg
tablet each day. The maximum dose to treat
high blood pressure is 480 mg each day. This
is usually taken as one Securon 240 mg tablet
in the morning and one in the evening, leaving
a gap of about 12 hours between each dose.
Angina (chest pain)
The usual starting dose for angina is one
Securon SR 240 mg tablet taken twice a day.
You should take one tablet in the morning and
one in the evening, with a gap of about 12
hours in between them. Your doctor may
prescribe a lower dose according to your
Following a heart attack
The usual dose following a heart attack is 360
mg each day. This may be taken as one
Securon SR 240 mg tablet in the morning and
a Half Securon SR 120 mg tablet in the
evening or as one Half Securon SR 120 mg
tablet taken three times a day. The doctor will
usually wait at least a week after your heart
attack before prescribing these tablets.
Half Securon SR are NOT recommended for
children under 12 years of age.
If you take more tablets than prescribed (an
overdose) you should contact a doctor or go
to the nearest hospital casualty department
IMMEDIATELY taking your tablets with you.
If you forget to take your tablets take them
as soon as you remember, unless it is almost
time for your next dose. If it is, do not take the
missed dose at all. Never double up on a dose
to make up for the one you have missed.
If you stop taking your tablets your condition
may get worse. It is important that you keep
taking these tablets until your doctor tells you
to stop. Do NOT stop just because you feel

Other things to remember about Half
Securon SR
• Securon SR 240 mg tablets may be broken
in half if your doctor advises you to do so
(e.g. if a lower dose has been prescribed).
• The tablets should NOT be crushed or
chewed, as this will affect the modifiedrelease formulation of the product.

Reporting of side effects
If you get any side effects, talk to your doctor,
pharmacist or nurse. This includes any
possible side effects not listed in this leaflet.
You can also report side effects directly via the
at: By reporting
side effects you can help provide more
information on the safety of this medicine.

4. Possible side effects
5. How should you store your tablets?
As with all medicines, Securon SR and Half
Securon SR can cause side effects, although
not everyone will suffer from them. If you
experience any other unusual symptoms
whilst taking your tablets, tell your doctor
or pharmacist.
Tell your doctor IMMEDIATELY if you
experience any of the following side
• Yellowing of the skin or eyes, a fever or
tenderness around the middle. These are
signs that your liver may not be functioning
as well as usual
• Palpitations, chest pains for the first time or
chest pains becoming more frequent,
swollen ankles, hot and painful hands or feet
• Swelling of the limbs
• Unexpected wheezing, difficulty breathing,
swelling of the mouth, lips or tongue or
severe skin rash
The most common side effect is constipation.
Other side effects include abnormal heart
beat, flushing of the face or neck, headaches,
feeling or being sick, abdominal pain or
discomfort, dizziness, vertigo, tinnitus (ringing
or buzzing in the ears), tiredness, tremor,
movement disorders, muscle weakness, aches
and pains in the joints and/or muscles, skin
rash or itching, a tingling or prickling feeling on
the skin, numbness and hair loss. Impotence
may occur rarely.
Other side effects might occur if Securon SR
or Half Securon SR are used for a long time.
Tell your doctor if you develop swollen gums
which start to spread over your teeth, or if your
breasts swell (males) or start to produce milk
(males and females). These effects are rare
and are resolved upon stopping taking the

• Do not store above 25°C. Store in the
original package.
• Your tablets should be stored in a safe place
out of the sight and reach of children, your
medicine could harm them.
• Do NOT take your tablets after the expiry
date (EXP) date shown on the carton. The
expiry date refers to the last day of that
• If your doctor decides to stop your treatment,
return any leftover tablets to your
pharmacist. Only keep the tablets if your
doctor tells you to. Do NOT dispose of
leftover tablets carelessly (e.g. down the
toilet or in with your general rubbish).
• If your medicine become discoloured or
show signs of any deterioration, consult your
doctor or pharmacist who will tell you what to
6. Further information
What Half Securon SR contains
Half Securon SR contains the active ingredient
verapamil hydrochloride, in a sustained
release (slow release) formulation.
Each tablet contains 120 mg of verapamil
Inactive tablet ingredients:
Core ingredients: sodium alginate, povidone,
microcrystalline cellulose and magnesium
Coating Ingredients: hypromellose, macrogol
400, macrogol 6000, talc, titanium dioxide
(E171) and montan glycol wax.

Half Securon SR looks like:
Half Securon SR is a round, white, biconvex,
modified released tablet embossed with the
word 'KNOLL' on one side and '120 SR' on the
The tablets are available in blister packs of 30
or 60 tablets.
PL: 15814/1158


Manufactured by AbbVie Deutschland GmbH
& Co. KG, Ludwigshafen, Germany.
Procured from within the EU and repackaged
by the Product Licence holder: O.P.D.
Laboratories Ltd., Unit 6 Colonial Way,
Watford, Herts WD24 4PR.
Leaflet revision and issue date (Ref.):
Securon is a trademark of Abbott GmbH & Co.
KG, Germany.
To request a copy of this leaflet in Braille, large
print or audio please call 01923 332 796.

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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.