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Half Securon® SR 120 mg 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
- For further information or advice ask your doctor or pharmacist
- This medicine is for you only and should never been 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
This medicine is available using the above name but will be referred to as
Half Securon SR throughout this leaflet.
Also available in other strength as Securon SR 240 mg Tablets.
Leaflet contents:
1. What is Half Securon SR and what is it used for?
2. What should you know before taking your tablets?
3. How should you take your tablets?
4. Possible side effects.
5. How should you store your tablets?
6. Further information.
Half Securon SR 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.

- 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 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 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

Half Securon SR is 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.

Pregnancy and breast feeding
Please discuss with your doctor if you are pregnant, planning to become
pregnant or are breast feeding.

The active ingredient in Half Securon SR is verapamil hydrochloride.

ALWAYS take this medicine exactly as your doctor has told you. Check with
your doctor if you are not sure.

If the answer to any of the following questions is ‘YES’ please tell your
doctor or pharmacist BEFORE taking any tablets:
- Are you are 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
- 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 syndrome?
- Do you have a condition where the nerve to muscle transmission is
affected e.g. myasthenia 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
- 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
- glibenclamide, used to treat certain types of diabetes

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
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 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 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.
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.
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 pharmacist.
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 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: or search for MHRA Yellow Card in the
Google Play or Apple App Store. By reporting side effects, you can help
provide more information on the safety of this medicine.
Keep out of the sight and reach of children.
Do not store above 25°C. Store the original package.
Do not take your tablets after the expiry date shown on the carton.
If your doctor decides to stop the treatment, return any left over to your
pharmacist. Only keep the tablets if your doctor tells you to.
Medicines should not be disposed of via wastewater or household waste.
Ask you pharmacist how to dispose of medicine no longer required. These
measures will help to protect the environment.
If your tablets become discoloured or show any other signs of deterioration,
consult your doctor or pharmacist who will tell you what to do.
The active ingredient in Half Securon SR tablets is verapamil hydrochloride.
Each tablet contains 120 mg of verapamil hydrochloride in a modified
release formulation.
The inactive ingredients are microcrystalline cellulose, sodium alginate,
povidone, magnesium stearate, purified water, hypromellose, macrogol 400,
macrogol 6000, talc, titanium dioxide (E171) and Montan Glycol Wax.
What Half Securon SR Tablets look like:
Half Securon SR are round, white tablets marked 'KNOLL' on one side and
'120 SR' on the other.
Half Securon SR tablets are available in blister packs of 28 and 98 tablets
calendar blister strips.

Manufactured by Famar A.V.E., Anthoussa Avenue 7, Anthoussa Attiki
15344, Greece.
Procured from within the EU by Product Licence holder Star
Pharmaceuticals Ltd, 5 Sandridge Close, Harrow,
HA1 1XD.
Repackaged by Servipharm Ltd.

Half Securon SR 120mg Tablets - PL 20636/2705

Leaflet revision and issue date (Ref) 20.11.17[9]
Half Securon SR is a trademark of Abbott GmbH & Co. KG.

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.