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Naltrexone Hydrochloride 50 Mg Film-Coated Tablets

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PACKAGE LEAFLET: INFORMATION FOR THE USER Naltrexone hydrochloride 50 mg film-coated tablets

(Naltrexone hydrochloride)

Read all of this leaflet carefully before you start taking this medicine.

-    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. Do not pass it on to others. It may harm them, even if their symptoms are the same as yours.

-    If any of the side effects gets serious, or if you notice any side effects not listed in this leaflet, please tell your doctor or pharmacist.

In this leaflet:

1.    What Naltrexone hydrochloride is and what it is used for

2.    Before you take Naltrexone hydrochloride

3.    How to take Naltrexone hydrochloride

4.    Possible side effects

5.    How to store Naltrexone hydrochloride

6.    Further information


1.    WHAT NALTREXONE HYDROCHLORIDE IS AND WHAT IT IS USED FOR

Naltrexone hydrochloride is used as part of a treatment programme to help you stop taking opiates and remain off of them.

Naltrexone belongs to a group of medicines called opiate antagonists. It blocks the euphoric feelings (highs) that you may experience after taking opiates. In treatment for withdrawal from opiates it will reduce the craving. Naltrexone tablets do not cause dependency.

2.    BEFORE YOU TAKE NALTREXONE HYDROCHLORIDE

Do not take Naltrexone hydrochloride if:

-    You are allergic to naltrexone or any of the other ingredients (See Section 6)

-    You have severe liver problems

-    You have severe kidney problems

-    You are still taking opiates

-    You experience withdrawal symptoms after a naloxone injection or your urine tests positive for opiates.

Take special care with Naltrexone hydrochloride 50 mg film-coated tablets

Your treatment should be started by a physician experienced in treatment of addictions.

-    Don't take opiates whilst taking Naltrexone tablets. Although Naltrexone will normally block some of the effects (i.e. the highs), if you take high doses of opiates, you may experience breathing difficulties and problems with your circulation (opiate poisoning).

-    You should not use Naltrexone if you are still addicted to opiates as Naltrexone will cause severe withdrawal symptoms in this situation.

-    You must inform every doctor that treats you that you are taking Naltrexone. Nonopiate based anaesthetics should be used if you require an anaesthetic in an emergency situation. If you have to use opiate containing anaesthetics, you may need higher doses than usual. You may also be more sensitive to the side-effects (breathing difficulties and circulatory problems).

-    You must not try to overcome to blocking effect of Naltrexone with high doses of opiates. There is a risk that the opiates could still be in your body after the effects of Naltrexone have passed. If this occurs, you could unintentionally overdose with serious consequences.

- Naltrexone is removed from the body by the liver and kidney. Liver problems are common in opiate-dependant individuals. You doctor will carry out liver function tests before and during treatment.

Taking other medicines Please tell your doctor if you are taking or have recently taken any other medicines, including medicines obtained without a prescription. Some common medicines contain opiates and these may not work when you are taking Naltrexone hydrochloride. You should inform your doctor if you need cough-mixtures or medicines against diarrhoea or pain since these may contain opiates.

Taking Naltrexone hydrochloride with food and drink

Food and drink do not interfere with the effects of Naltrexone.

Pregnancy and breast-feeding

Naltrexone hydrochloride should only be used in pregnancy if the benefit to the mother is greater than the possible risk.

Breast-feeding is not recommended if you are taking Naltrexone hydrochloride.

Ask your doctor or pharmacist for advice before taking any medicine.

Driving and using machines

Naltrexone hydrochloride may make you feel

less alert or drowsy.

You should not drive or operate machines if you are affected.

Important information about some of the ingredients of Naltrexone hydrochloride.

Naltrexone hydrochloride contains lactose (a kind of sugar). If you have ever been told that you have an intolerance to some sugars, contact your doctor before taking this medicine.

3. HOW TO TAKE NALTREXONE HYDROCHLORIDE

Always take Naltrexone hydrochloride exactly as your doctor has told you. You should check with your doctor or pharmacist if you are not sure. The initial dose of Naltrexone hydrochloride is half a tablet (25 mg) on the first day of treatment. After that the usual dose is one tablet per day (50 mg). Your doctor may prescribe a different dosage depending on your individual needs. The amount of time you should take Naltrexone hydrochloride for will be decided by your

very common

affects more than 1 user in 10

common

affects 1 to 10 users in 100

uncommon

affects 1 to 10 users in 1,000

rare

affects 1 to 10 users in 10,000

very rare

affects less than 1 user in 10,000

not_known

frequency cannot be estimated from the available data


This medicinal product is authorised in the Member States oft the EEA under the following names:

Belgium:


Czech Republic: Denmark:

Germany:

Hungary:

Ireland:

Latvia:

Lithuania:

Netherlands:

Portugal:


Slovenia:


United Kingdom:


doctor. The usual length of treatment is three months. However, in certain cases, a longer period of treatment may be beneficial.

Opizone should not be used in children and adolescents under 18 years.

If you take more Naltrexone hydrochloride than you should

If you take more Naltrexone hydrochloride than you should, tell your doctor or pharmacist or contact your nearest hospital emergency department immediately.

If you forget to take Naltrexone hydrochloride

If you forget to take a dose, take it as soon as you remember. Never take more than your prescribed dose at one time.

If you stop taking Naltrexone hydrochloride

After stopping treatment with Naltrexone hydrochloride you may be more sensitive to the effects of opiates. You could unintentionally overdose, even if you take the same dose as you previously used. This is because you build up tolerance whilst taking opiates and once you stop, this tolerance is lost. If you take a high dose, this could have severe consequences or in extreme cases may even be fatal.

4. POSSIBLE SIDE EFFECTS Like all medicines, Naltrexone hydrochloride can cause side effects, although not everybody gets them. The most serious side effects occurring in people taking Naltrexone hydrochloride include feeling depressed, feeling suicidal, attempted suicide and hallucinations. Although these effects are rare, if you do experience any of these, then you must contact your doctor or pharmacist immediately for help and support. The following other side effects to Naltrexone hydrochloride are sorted according to their frequency:

Very common: Headache, difficulty sleeping, feeling restless, nervousness, stomach pain or cramps, feeling or being sick, joint and muscle pain, feeling weak and lacking energy. Common: Feeling thirsty, dizziness, shivering, increased sweating, vertigo, watery eyes, chest pains, diarrhoea or constipation, difficulty urinating, rash, lack of appetite, delayed ejaculation, decreased potency, anxiety, increased energy, feeling despondent or irritable and mood swings.

Rare: Feeling depressed, feeling suicidal, attempted suicide, difficulty speaking, liver problems.

Very rare: Decreased number of blood cells (platelets), which may make you bruise more easily, feeling agitated, hallucinations, euphoria, shakiness and skin rashes.

If any of the side effects get serious, or if you notice any side effect not listed in this leaflet, please tell your doctor or pharmacist.

5. HOW TO STORE NALTREXONE HYDROCHLORIDE 50 MG FILM-COATED TABLETS

Keep out of the reach and sight of children.

Do not use Naltrexone hydrochloride after the expiry date which is stated on the carton and blister. The expiry date refers to the last day of that month.

Do not store above 25 °C. Store in the original package in order to protect from moisture.

If you notice any defects in the tablets such as chipped or broken tablets, ask your pharmacist for advice before taking them.

Medicines should not be disposed via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. These measures will help to protect the environment.

6. FURTHER INFORMATION

What Naltrexone hydrochloride contains

Each tablet contains 50 mg of the active substance naltrexone hydrochloride.

The other ingredients are: Lactose monohydrate, powdered cellulose, microcrystalline cellulose, silica colloidal anhydrous, crospovidone, magnesium stearate, hypromellose, titanium dioxide (E 171), macrogol 4000, black ferric oxide (E172), red ferric oxide (E 172), yellow ferric oxide (E 172).

What Naltrexone hydrochloride looks like and contents of the pack

Naltrexone hydrochloride film-coated tablets are beige and capsule-shaped, with a breakline across the middle. The film-coated tablet can be divided into equal halves. Naltrexone hydrochloride is available in packs of 7, 14, 28 and 56 tablets. Not all pack sizes may be marketed. Marketing Authorisation Holder and Manufacturer

Marketing Authorisation Holder

AOP Orphan Pharmaceuticals AG, Vienna, Austria Manufacturer

Haupt Pharma GmbH, Wolfratshausen, Germany

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Naltrexone hydrochloride 50 mg film-coated tablets The leaflet was last approved in

June 2010