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Half Securon SR 120mg Tablets
(verapamil hydrochloride)
Read all of this leaflet carefully before you start taking this medicine

Keep this leaflet as you may need to read it again

This leaflet provides a summary of the information currently
available about Half Securon SR 120mg

For further information or advice ask your doctor or pharmacist

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
The name of your medicine is Half Securon SR 120mg Tablets, but will
be referred to as Half Securon SR throughout the remainder of the
Your medicine is also available in a strength of 240mg (Securon SR).
What is in this leaflet
1. What Half Securon SR is and what is it used for?
2. What you need to know before you take Half Securon SR
3. How to take Half Securon SR
4. Possible side effects.
5. How to store Half Securon SR
6. Contents of the pack and other information
1. What Half Securon SR is 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 pressure.
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 occurring.
The active ingredient in Half Securon SR tablets is verapamil
2. What you need to know before you take Half Securon SR
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 other
ingredients in the tablets? (See Section 6).

Are you pregnant or planning to become pregnant, or are you breast

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 conditions)?
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, disopyramide,
digoxin and digitoxin

dabigatran (medicine to prevent the formation of blood clots)

medicines containing ivabradine for the treatment of certain heart

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 diabetes

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 anaesthetic

theophylline, used to treat asthma

doxorubicin, an anti-cancer medicine

cimetidine, used to treat indigestion or stomach ulcers

rifampicin, used to treat tuberculosis and other types of infection

carbamazepine, phenytoin or phenobarbital (phenobarbitone).
These medicines are used as anti-convulsants.
ritonavir, used to treat HIV
erythromycin, clarithromycin and telithromycin, used to treat types of
colchicine or sulfinpyrazone, used to treat gout.

Tell your surgeon or dentist that you are taking Securon SR or 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
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 juice.
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.
Pregnancy and breast feeding
Please discuss with your doctor if you are pregnant, planning to become
pregnant or are breast feeding.
3. How to take Half Securon SR
ALWAYS take this medicine exactly as your doctor has told you. Check
with your doctor if you are not sure.
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 for:
Hypertension (high blood pressure)
The recommended 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 SR 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 symptoms.
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
The dose will be the same as that for adults. If you have kidney or liver
problem, your doctor may lower your dose.
If you take more Half Securon SR than you should
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 Half Securon SR
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. Do not take double dose to make up for a forgotten tablet.
If you stop taking Half Securon SR
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 better.
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, chewed or sucked, as this will
affect the modified-release formulation of the product.
If you have any further questions on the use of this medicine, ask your
doctor or pharmacist.

4. Possible side effects
As with all medicines, 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
Tell your doctor IMMEDIATELY if you experience any of the
following side effects:

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 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 tablets.
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 Yellow Card Scheme at: By reporting side effects, you can help
provide more information on the safety of this medicine.
5. How to store Half Securon
Do NOT take your tablets after the ‘use by’ date shown on the carton.
Keep them in the original pack, at normal room temperature
(do not store them above 25 °C).
Your tablets should be stored in a safe place out of the sight and reach of
children, your medicine could harm them.
If your doctor decides to stop your treatment, return any left over 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).
6. Contents of the pack and other information
Each tablet contains 120mg of verapamil hydrochloride in a modified
release formulation.
Also contains, sodium alginate, microcrystalline cellulose, povidone,
purified water, talc, titanium dioxide (E171), hypromellose, magnesium
stearate, macrogol 400, macrogol 6000 and montan glycol wax.
Half Securon SR tablets are white, round and marked with ‘KNOLL’ on
one side and ‘120 SR’ on the other.
The tablets are available in calendar packs of 28 and 98.
Half Securon SR tablets are manufactured by Ebewe Arzeneimittel
GesmbH Mondseestrasse 11, A-4866 Unterach Austria or AbbVie
Deutschland GmbH & Co. KG, Knollstrasse, 67061 Ludwigshafen,
Germany or FAMAR A.V.E, Anthoussa Avenue 7, Anthoussa Attiki
15344, Greece. Procured from within the EU. Product Licence holder:
Quadrant Pharmaceuticals Ltd, Lynstock House, Lynstock Way, Lostock,
Bolton BL6 4SA. Repackaged by Maxearn Ltd, Bolton BL6 4SA.
Half Securon SR 120mg Tablets
PL 20774/1187



Date of preparation 26 July 2017
Half Securon is a registered trademark of Abbott GmbH & Co. KG,

Blind or partially sighted?
Is this leaflet hard to see or read?
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Ltd – Tel 01204 473081


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