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Active substance(s): CLARITHROMYCIN

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Package leaflet: Information for the user
Lencos XL 500 mg Prolonged Release Tablets
Read all of this leaflet carefully before you start taking this medicine beacause 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.
What is in this leaflet
What Lencos XL is and what it is used for
What you need to know before you take Lencos XL
How to take Lencos XL
Possible side effects
How to store Lencos XL
Conten of the pack and other information
What Lencos XL is and what it is used for
Lencos XL is an antibiotic belonging to a group of medicines called the macrolides. Antibiotics stop the
growth of bacteria (bugs), which cause infections.
Lencos XL tablets are prolonged-release tablets, which means that the active ingredient is released slowly
from the tablet so that you only have to take it once a day.
Lencos XL is used to treat the following infections:
 Bronchitis and pneumonia
 Throat and sinus infections
 Mild to moderate skin and tissue infections
Lencos XL is not suitable for children younger than 12 years of age. Your doctor may prescribe another
form of clarithromycin.

What you need to know before you take Lencos XL

Do not take Lencos XL
 if you are allergic to Clarithromycin, any other macrolides (e.g. erythromycin, azithromycin) or any of
the other ingredients of this medicine (listed in section 6)
 if you are taking medicines called terfenadine or astemizole (for hay fever or allergies) or cisapride or
pimozide tablets as combining these drugs can sometimes cause serious disturbances in heart rhythm.
Consult your doctor for advice on alternative medicines.
 if you or someone in your family has a history of heart rhythm disorders (ventricular cardiac arrhythmia,
including torsade de pointes) or abnormality of electrocardiogram (ECG, electrical recording of the
heart) called “long QT syndrome”.
 if you are taking other medicines which are known to cause serious disturbances in heart rhythm
 if you have severe kidney problems. Your doctor may prescribe another form of clarithromycin.
 if you are taking cisapride (for stomach disorders)
 if you are taking pimozide (for mental illness)
 if you are taking ticagrelor (a blood-thinning drug)
 if you are taking ranolazine (used to treat angina)

if you are taking ergotamine-like drugs (usually used for migraine)
if you are taking simvastatin or lovastatin (to reduce cholesterol)
if you have been told by your doctor that you have low levels of potassium in your blood
if you have severe liver disease with kidney disease
if you are taking colchicine (used to treat gout)

Warnings and precautions
Talk to your doctor or pharmacist before taking Lencos XL if:
 you have any kidney or liver problems
 you have known heart problems, in particular heart rhythm problems (e.g. long QT syndrome).
 you have myasthenia gravis, a condition in which your muscles become weak and tire easily
 you develop severe or prolonged diarrhoea during or after taking Lencos XL, consult your doctor
 you have, or are prone to, fungal infections (e.g. thrush)you are allergic to lincomycin or
clindamycin (antibiotics).
 you have abnormally low levels of magnesium in your blood (hypomagnesaemia).
 you are taking other medicines which are known to cause serious disturbances in heart rhythm (for
the medicines terfenadine, astemizole, cisapride, and pimozide: see ‘Do not take Clarithromycin’).
Other medicines and Lencos XL
Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines,
including medicines obtained without a prescription.
You should not take Lencos XL if you are taking any of the medicines listed in the section above “Do not
take Lencos XL;”
If taken with Lencos XL, the levels and therefore the effects of the following listed medicines may be
 Digoxin, quinidine or disopyramide (heart drugs)
 Warfarin (blood thinner)
 Carbamazepine, valproate or phenytoin (drugs for epilepsy)
 Theophylline (for asthma)
 Triazolam, alprazolam or midazolam (sedatives)
 Omeprazole (for stomach disorders)
Lencos XL may interact with the Anti-viral [HIV] drugs in the following manner:
 Zidovudine, Lencos XL may lower the levels of zidovudine.
 Ritonavir may increase the levels of Lencos XL.
 Atazanavir & Saquinavir: Taking these drugs with Lencos XL may increase both the levels of
Atazanavir (or Saquinavir) and Lencos XL.
 Nevirapine & Efavirenz may lower the levels of Lencos XL.
 Etravirine may lower the levels of Lencos XL.
Other interactions include:
 Rifabutin (an antibiotic effective against some infections) may lower the levels of Lencos XL.
 Itraconazole (an anti-fungal drug) taken together with Lencos XL may increase the levels of both
 Fluconazole, another anti-fungal drug, may increase the levels of Lencos XL.
 Sildenafil, tadalafil or vardenafil (for treating erectile dysfunction). Taking these drugs with Lencos
XL may increase both their levels.
 Tolterodine (to treat symptoms of overactive bladder syndrome). In certain patients, the levels of
tolterodine may be increased when taken with Lencos XL.

Methylprednisolone (a corticosteroid to treat inflammation)
Vinblastine (a chemotherapy agent used to treat cancer)
Ziprasidone (and antipsychotic drug)
Eletriptan (used for migraine)
Halofantrine (used to treat malaria)
Aprepitant (used to prevent vomiting during chemotherapy)
Cilostazol (used to improve circulation in the legs)
Rifampicin, rifapentine (to treat tuberculosis)
Tacrolimus, sirolimus or cyclosporin (for organ transplants)
St John’s Wort (herbal product to treat depression.
Phenobarbital (drug for epilepsy).
Medicines used to treat diabetes, e.g. insulin, nateglinide, repaglinide.
atorvastatin, pravastatin (HMG-CoA reductase inhibitors, commonly known as statins, and used
to lower levels of cholesterol (a type of fat) in the blood)
Aminoglycosides (antibiotics) e.g. gentamicin
Calcium channel blockers e.g verapamil, amlodipine, diltiazem (used to treat high blood pressure
or heartbeat disorders)

Lencos XL with food and drink
This medicine should be taken with food.
Pregnancy and breast-feeding
If you are pregnant or breast-feeding, think you may be pregnant or are planning to have a baby, ask your
doctor or pharmacist for advice before taking this medicine.
Clarithromycin should not be given to pregnant or breast-feeding mothers unless the benefits to the mother
outweigh the risks to the baby.
Small amounts of clarithromycin can pass into breast milk.
Driving and using machines

Your tablets may make you feel sleepy, dizzy or confused. DO NOT drive or operate machinery if
you are affected.

Lencos XL contains lactose
This medicine product contains lactose. 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 Lencos XL

Always take this medicine exactly as your doctor has told you. Check with your doctor or pharmacist if you
are not sure. Your doctor will tell you how to take Lencos XL and how long for. Do not stop taking Lencos
XL early even of your symptoms improve. It is important to take the tablets for as long as the doctor has told
you to, otherwise the infection might come back.

The tablets should be swallowed whole with some liquid
The tablets should not be chewed or halved
The tablets should be taken once daily preferably at the same time each day for your course
of treatment
The tablets should be taken with food

The recommended dose is:
Adults including the elderly and children over 12 years: The recommended dose is 500 mg once daily for 6
days to 14 days. However your doctor will decide the length of your treatment. Your doctor may increase
the dose to two 500 mg tablets in severe infections. You should take both of these tablets at the same time.
Children under 12 years: Do not give this medicine to children under 12 years of age. Your doctor will
prescribe another suitable medicine for your child.
Patients with severe kidney and liver problems:
Patients with severe kidney and liver problems should not take Lencos XL.
If you take more Lencos XL than you should
Contact your doctor or nearest hospital emergency department immediately. Take the container and any
remaining tablets with you. Symptoms of overdose include feeling or being sick, diarrhoea, indigestion or
stomach pains and there is the possibility of allergic reactions.
If you forget to take Lencos XL
Take the next dose as soon as you remember unless it is almost time for your next dose. Do not take a
double dose to make up for a forgotten dose.
If you stop taking Lencos XL
Do not stop taking Lencos XL because you feel better. It is important to take the tablets for as long as the
doctor has told you to, otherwise the problem might come back.
If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.
If you suffer from any of the following at any time during your treatment STOP TAKING your tablets and
contact your doctor immediately:
• severe or prolonged diarrhoea, which may have blood or mucus in it. Diarrhoea may occur over two
months after treatment with clarithromycin, in which case you should still contact your doctor.
• a rash, difficulty breathing, fainting or swelling of the face and throat. This is a sign that you may have
developed an allergic reaction.
• yellowing of the skin (jaundice), skin irritation, pale stools, dark urine, tender abdomen or loss of
appetite. These may be signs that your liver may not be working properly.
• severe skin reactions such as blistering of the skin, mouth, lips, eyes and genitals (symptoms of a rare
allergic reaction called Stevens-Johnson syndrome/toxic epidermal necrolysis).
• torsade de pointes, a life threatening irregular heart beat.
Common side effects (may affect up to 1 in 10 people) include;
• headache
• difficulty sleeping
• changes in sense of taste
• stomach problems such as feeling sick, vomiting, stomach pain, indigestion, diarrhoea
• abnormal liver function (seen in blood results)
• skin rash

• increased sweating
Uncommon side effects(may affect up to 1 in 100 people ) include:
• oral or vaginal ‘thrush’ (a fungal infection)
• reduction in the level of certain blood cells (which can make infections more likely or increase the risk
of bruising or bleeding)
• loss of appetite, heartburn, bloating, constipation, wind
• anxiety, nervousness, drowsiness, tiredness, weakness, dizziness, tremor or shaking, or a general
feeling of being unwell
• ringing in the ears or hearing loss
• vertigo
• inflammation of the mouth or tongue
• dry mouth
• joint pain
• chest pain or changes in heart rhythm such as palpitations
• a change in the levels of products made by the liver, inflammation of the liver, an inability of the liver
to function properly or liver failure (you may notice yellowing of the skin, dark urine, pale stools or
itchiness of the skin)
• abnormal blood test results
Not known: (frequency cannot be estimated from available data):
• swelling, redness or itchiness of the skin.
• swelling of the lips, face and tongue (angioedema)
• acne
• inflammation of the pancreas
• confusion, loss of bearings, hallucinations (seeing things), change in sense of reality or panicking,
depression, abnormal dreams or nightmares, mania
• convulsion (fits)
• bleeding
• discolouration of the tongue or teeth
• loss of taste or smell or inability to smell properly
• pins and needles
• deafness
• muscle pain or loss of muscle tissue. If you suffer from myasthenia gravis (a condition in which the
muscles become weak and tire easily) clarithromycin may worsen these symptoms
• low blood sugar levels
• inflammation of the kidney or an inability of the kidney to function properly (you may notice
tiredness, swelling or puffiness in the face, abdomen, thighs or ankles or problems with urination), or
kidney failure
Reporting of side effects
If you get 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:
By reporting side effects you can help provide more information on the safety of this medicine.

How to store Lencos XL

Keep this medicine out of the sight and reach of children.
[PVC/PVdC aluminium blister pack]
Do not store above 30°C.
Store in the original package in order to protect from moisture.
[OPA/AL/PVC/AL blister pack]

This product does not require any special storage conditions.
Do not use this medicine after the expiry date which is stated on the label after Exp. The expiry date refers
to the last day of that month.
Do not throw away any medicines via wastewater or household waste. Ask your pharmacist how to throw
away medicines you no longer use. These measures will help protect the environment.

Content of the pack and other information

What Lencos XL contains:
 The active substance is clarithromycin. Each tablet contains 500mg clarithromycin.

The other ingredients are: citric acid anhydrous, sodium calcium alginate, sodium alginate manucol,
lactose monohydrate, povidone, talc, stearic acid, magnesium stearate, vanillin, opadry II 31F32870
Yellow (containing Lactose monohydrate, hypromellose (E464), titanium dioxide (E171),
polyethylene glycol, iron oxide yellow (E172), iron oxide red (E172), iron oxide black (E172).

What Lencos XL looks like and contents of the pack
Lencos XL are light yellow to yellow, film coated, oval shaped prolonged-release tablets.
Your tablets come in blister packs in pack sizes of 5, 6, 7, 10, 14, 20 & 1 tablet unit dose pack.
Not all pack sizes may be marked.

Marketing Authorisation Holder and Manufacturer
Teva UK Limited, Eastbourne, BN22 9AG, UK
This leaflet was last revised in March 2016
PL 00289/1614
*Only the actual site of batch release will appear on the printed version of the leaflet

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Further information

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