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1. Thiopental Sodium 500 Mg Powder For Solution For Injection
2. Thiopental Sodium 500 Mg Powder For Solution For Injection

PACKAGE LEAFLET: INFORMATION FOR THE USER THIOPENTAL SODIUM 500 mg Powder for Solution for Injection

Read all of this leaflet carefully before receiving this medicine.

-    Please keep this leaflet. You may need to read it again.

-    If you have any further questions, ask the doctor or nurse.

-    If you suffer from any side effect that gets serious, or if you notice any side effects not listed in this leaflet, please tell the doctor or nurse.

In this leaflet:

1.    What Thiopental injection is and what it is used for

2.    Before Thiopental injection is given

3.    How Thiopental injection is given

4.    Possible side effects

5.    How to store Thiopental injection

6.    Further information

Thiopental injection contains the active ingredient thiopental sodium which is also known as thiopentone sodium. It is an anaesthetic agent, which may be given:

•    as a general anaesthetic or to make you sleepy before using another anaesthetic agent

•    before using agents to prevent pain or to relax muscles

• to control fits

• to reduce intracranial pressure.

This injection is usually given to you by a doctor directly into a vein.

You MUST NOT be given Thiopental if you:

•    are allergic to thiopental sodium or have had reactions to thiopental or to other barbiturates (such as some anaesthetics)

•    have any respiratory abnormalities (difficulty in breathing), such as an obstruction in your lungs or in the tubes leading to them

•    have acute asthma (short term)

•    are in severe shock

•    have myotonic dystrophy - a muscular disease

•    have the condition known as porphyria - a metabolic disorder.

If any of these apply to you; tell the doctor or nurse, they will usually

decide to use another medicine instead.

•    antihypertensives (used to treat high blood pressure or heart problems), such as ACE inhibitors, angiotensin-II receptor antagonists, alpha blockers, beta-blockers, calcium antagonists, diuretics, vasodilating anti-hypertensives, alpha adrenergic neurone blockers

•    nitrates (used to treat angina)

•    antidepressants (used to treat depression), such as monoamine oxidase inhibitors (MAOIs) and tricyclic antidepressants

•    benzodiazepines, such as midazolam, to treat anxiety

•    lithium (used to treat mania, manic depressive illness or depression)

•    analgesics (used to treat pain) such as aspirin

•    opioid analgesics (strong pain relievers) such as morphine, fentanyl and pethidine

•    phenothiazines (used to treat psychosis and nausea) such as promethazine

•    drugs that have an effect on the gastrointestinal tract (gut), such as metoclopramide or droperidol

•    drugs that have an effect on the central nervous system (CNS)

•    cyclizine (used to treat dizziness, nausea and vomiting)

•    drugs to treat high blood pressure, such as diazoxide, methyldopa, moxonidine, hydralazine, minoxidil and nitroprusside

•    probenecid (used to treat gout and high uric acid in the blood)

•    oral anticoagulants (to thin your blood)

•    oestrogens (oral contraceptives or hormone replacement therapy)

•    herbal medicines, such as valerian and St John’s Wort. Thiopental sodium with alcohol

The effect of alcohol may be increased in the period after treatment with thiopental sodium (at least the first 24 hours).

Pregnancy and breast-feeding

If you are pregnant, planning to become pregnant or breast-feeding, your doctor will consider the risks and benefits of giving Thiopental to you.

Driving and using machines

You may experience dizziness (vertigo), disorientation and sedation; these will wear off quite quickly. Do not drive or operate machinery, especially during the first 24 to 36 hours after the injection.

Take special care with Thiopental injection

Tell your doctor, before you are given Thiopental if you have any of the following, as your dose may need to be adjusted:

•    heart disease or circulatory problems, as these can suddenly be made more severe by Thiopental

•    severe anaemia, blood pressure problems (high blood pressure or low blood pressure), raised blood potassium, increased blood urea, bacterial infection in the blood, severe bleeding

•    liver or kidney disease

•    increased pressure in the brain

•    muscle weakness or degeneration (such as myasthenia gravis or muscular dystrophies)

•    thyroid gland problems

•    diabetes

•    dehydration, malnutrition or wasting

•    underproduction of steroid hormones by the adrenal gland (even when controlled by cortisone)

•    a metabolic disorder caused by an underactive thyroid gland (a reduced dose may be required)

•    asthma

•    burns

•    shock

•    hypovolaemia - a low level of fluids in the body

•    are elderly (a reduced dose may be required)

•    are taking opioid analgesics - strong pain relievers.

•    are on a sodium controlled diet as this product contains 53.5mg sodium per vial.

Taking other medicines

Please tell your doctor or pharmacist if you are taking or have recently taken any other medicines, including medicines obtained without a prescription.

The following medicines can affect, or be affected by, this injection and may need to be adjusted before or after receiving this injection:

•    antibiotics (used to treat infections), such as vancomycin, isoniazid and sulphonamides

•    sulphafurazole (an antibiotic) - smaller doses of thiopental given more frequently may be required

This injection is usually given to you directly into a vein by a doctor, but can be given via a drip into a vein.

If thiopental is accidentally injected into an artery instead of a vein, it can cause damage to your tissues. Your doctor should treat these effects (a similar problem can occur if thiopental leaks from the vein into surrounding tissue). If you feel severe pain near where the drug was injected tell the doctor or nurse immediately so that treatment can be started quickly.

Dose

The sterile powder is made into a solution and must not be mixed with other acidic injections.

This solution should be discarded after 7 hours.

The dosage will be adjusted according to your age, sex, and weight as well as your response to the drug.

Anaesthesia:

Adults: 100mg - 150mg, injected over 10 to 15 seconds.

Elderly: as for adults, although smaller doses may be required. Children: the calculated dose will usually be 2 to 7mg/kg.

You will normally feel the effects within 30 seconds and be asleep within one minute. Further small doses will be given to you as necessary (you will normally be asleep during this process).

Convulsions (fits):

75mg to 125mg, given as soon as possible after the convulsion begins. Further doses may be required and your doctor will decide the best dose to give.

Neurological patients with raised intracranial pressure:

Intermittent injections of 1.5 to 3mg/kg.

Reduced doses may be needed if you have:

• liver disease (including jaundice), shock, dehydration, severe anaemia, high blood level of potassium, infection in your blood

Kyowa Kirin Limited Galabank Business Park, Galashiels, UK, TD1 1QH Tel: +44 (0) 1896 664 000 Fax: +44 (0) 1896 664 001

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•    myxoedema (a metabolic disorder caused by an underactive thyroid gland).

•    received morphine or similar medicines before you are given Thiopental

•    received a medicine called sulfafurazole - your doctor may need to give you smaller and more frequent doses of Thiopental.

Increased doses may be needed if you:

•    are a heavy and frequent drinker of alcohol

•    regularly take non-prescribed drugs.

The dose of Thiopental may need to be increased or given with another medicine to increase its effect.

If you are given more Thiopental than you should

This product will be given to you under medical supervision, it is therefore unlikely that you will be given too much. However, if you feel unwell you should tell your doctor immediately. Symptoms could be: rapid shallow breathing or feeling faint or dizzy.

If you have any further questions on the use of this product, ask your doctor or pharmacist.

Like all medicines, Thiopental can cause side effects, although not everybody gets them. Seek medical help immediately if you have any of the following allergic reactions:

•    difficulty breathing or swallowing, swelling of the face, lips, tongue or throat

•    skin rashes and other allergic reactions, such as itching.

When it is injected, Thiopental can cause the following:

•    coughing, sneezing or spasm of the airways; difficulty in breathing

•    fall in blood pressure - often seen when thiopental is first given

•    drowsiness, nausea with or without vomiting, anorexia (poor appetite), malaise (general sense of unwellness), fatigue, dizziness, headache

•    delirium (sudden severe confusion) - may occur in elderly patients

•    shivering, low body temperature and severely reduced brain function can occur with excessive doses of thiopental.

Other effects include:

•    confusion, amnesia (loss or disruption of memory)

•    reduced pumping action of the heart or irregular heartbeats

•    low blood pressure or other circulatory effects

•    Thiopental has been associated with reports of decreased potassium blood levels during infusion and increased potassium blood levels after stopping thiopental infusion.

•    tissue damage if the injection leaks into surrounding tissue.

If you experience severe pain at the site of injection, inform your doctor immediately.

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

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 (see details below). By reporting side effects you can help provide more information on the safety of this medicine.

United Kingdom: Yellow Card Scheme.

Website: www.mhra.gov.uk/yellowcard.

Ireland: HPRA Pharmacovigilance, Earlsfort Terrace, IRL - Dublin 2. Tel: +353 1 6764971, Fax: +353 1 6762517 Website: www.hpra.ie E-mail: medsafety@hpra.ie.

Keep out of the sight and reach of children.

Before reconstitution:

The vials should be kept in the outer carton and not stored above 25°C.

After reconstitution:

This product contains no preservatives and should be used immediately. If the solution is stored, keep it upright and store between 2°C and 8°C. The reconstituted solution must be used within 7 hours. If the solution is discoloured it must not be used.

Thiopental should not be used after the expiry date printed on each vial and the pack. The expiry date refers to the last day of that month.

Medicines should not be disposed of via wastewater or household waste. Your healthcare professional will dispose of this medicine once no longer required. These measures will help to protect the environment.

What Thiopental Injection contains

Each vial contains 500mg of the active substance Thiopental Sodium (as Thiopental Sodium and Sodium Carbonate Ph. Eur.)

What Thiopental injection looks like and contents of the pack

The product is a dry, yellow-white powder contained in 20ml glass vials with rubber closures. Each vial contains 500mg thiopental sodium. This powder needs to be dissolved in Water for Injections before use.

Thiopental injection is packed in 10 or 25 x 20ml glass vials.

Marketing Authorisation Holder

Archimedes Pharma UK Ltd,

Galabank Business Park,

Galashiels,

TD1 1QH,

United Kingdom.

Manufacturer

Inresa Arzneimittel GmbH,

Obere Hardtstrape 18,

79114 Freiburg,

Germany.

PL 12406/0014 PA 0757/004/001 The leaflet was revised: 05/2016

LFT-THI-GB-002

Kyowa Kirin Limited Galabank Business Park, Galashiels, UK, TD1 1QH Tel: +44 (0) 1896 664 000 Fax: +44 (0) 1896 664 001

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