Package leaflet: Information for the user

Warning! Keep this leaflet! Information on the immediate packaging in a foreign language.
Sirdalud
4 mg, tablets
Tizanidinum
Please read the entire leaflet carefully before using the medicine, as it contains
important information for the patient.

Keep this leaflet, as you may need to read it again.
If you have any questions, please consult your doctor, pharmacist, or nurse.
This medicine has been prescribed for a specific individual. Do not pass it on to others. The medicine may harm someone else, even if their symptoms are similar.
If you experience any adverse reactions, including any adverse reactions not listed in this leaflet, inform your doctor or pharmacist. See section 4.

Table of contents:

What Sirdalud is and what it is used for
Important information before taking Sirdalud
How to take Sirdalud
Possible side effects
How to store Sirdalud
Contents of the pack and other information

1. What Sirdalud is and what it is used for

What Sirdalud is
The active substance in Sirdalud is tizanidine in the form of hydrochloride, which reduces increased muscle tension.
What Sirdalud is used for
Sirdalud is a centrally-acting skeletal muscle relaxant. It acts primarily on the spinal cord and reduces excessive muscle tension.
Sirdalud is used for:

treatment of painful muscle spasms
- associated with spinal disorders, e.g. lower back pain, neck spasm
- following surgery, e.g. herniated disc or hip joint inflammation
treatment of increased muscle tone in neurological diseases, e.g. multiple sclerosis, chronic spinal cord disorders, degenerative spinal diseases, after stroke, and in cerebral palsy*.
* in adults who were previously diagnosed with cerebral palsy in childhood.

2. Important information before taking Sirdalud

Strictly follow your doctor's instructions.
When not to take Sirdalud:

if the patient is allergic (hypersensitive) to Sirdalud (tizanidine) or to any of the other ingredients of the medicine (listed in section 6),
if the patient has significant liver function impairment or persistent threefold increase in aminotransferase activity above the upper limit of normal,
if the patient is taking medicines containing fluvoxamine (a medicine used to treat depression),
if the patient is taking medicines containing ciprofloxacin (an antibiotic used to treat infections).

If any of these points apply to the patient, Sirdalud must not be taken and
the patient should inform their doctor.
Warnings and precautions
Before starting treatment with Sirdalud, discuss this with your doctor or pharmacist,
especially:

in case of kidney function disorders,
in case of liver function disorders. Inform your doctor if symptoms of liver dysfunction occur, such as unexplained nausea, loss of appetite (anorexia), or fatigue. Your doctor may recommend liver function tests to decide whether treatment should continue or be discontinued. If the patient is taking doses of Sirdalud of 12 mg per day or higher, the doctor should monitor liver function,
in elderly patients,
if symptoms of hypotension (low blood pressure) occur, including loss of consciousness and vascular collapse. These symptoms may occur as a result of treatment with Sirdalud,
do not discontinue treatment without consulting your doctor (see also section 3. How to take Sirdalud).

If any of these points apply to the patient, inform your doctor.
Children and adolescents
Sirdalud is not recommended for use in children.
Sirdalud with other medicines
Tell your doctor or pharmacist about all medicines the patient is currently taking,
has recently taken, or plans to take.
It is especially important to inform your doctor if the patient is taking any of the following
medicines:

medicines that lower blood pressure and diuretics,
medicines used to treat depression (fluvoxamine),
medicines that cause drowsiness or strong analgesic effects,
antiarrhythmic medicines (used to treat irregular heartbeat, e.g. amiodarone, mexiletine, propafenone) or other medicines that have an adverse effect on heart function known as "QT prolongation",
cimetidine (a medicine used in peptic ulcer disease of the stomach and/or duodenum),
fluoroquinolones (e.g. ciprofloxacin) and rifampicin (antibiotics used to treat infections),
rofecoxib (a medicine used to reduce pain and inflammation),
oral contraceptives,
ticlopidine (a medicine used to reduce the risk of stroke),
if the patient smokes (more than 10 cigarettes per day).

Sirdalud and alcohol
Alcohol may enhance the sedative effect of the medicine; therefore, alcohol consumption should be avoided
during treatment with Sirdalud.
Pregnancy and breastfeeding
During pregnancy, while breastfeeding, if there is suspicion that a woman is pregnant, or when
planning pregnancy, consult your doctor before taking Sirdalud. Sirdalud may have
harmful effects on the unborn child.
Sirdalud must not be used during pregnancy.
Sirdalud must not be used during breastfeeding.
In sexually active women capable of becoming pregnant, a pregnancy test should be performed
before starting treatment with Sirdalud, and effective contraception should be used during
treatment and for at least one day after stopping Sirdalud.
Discuss with your doctor the choice of a suitable contraceptive method for the patient during this
period.
Driving and operating machinery
If drowsiness, dizziness, or other symptoms of hypotension (e.g. cold sweats, "feeling of emptiness in the head") occur during treatment with Sirdalud, the patient should not
drive or operate machinery.
Sirdalud contains lactose
If the patient has been previously diagnosed with intolerance to certain sugars (e.g. lactose), the patient
should contact their doctor before taking this medicine.

3. How to use Sirdalud

The following provides the standard dosage recommendations for Sirdalud. This medicine should always be used
according to the instructions given by your doctor. If in doubt, consult your doctor or pharmacist. Do not
change the prescribed dose or stop taking the medicine without consulting your doctor.
Sirdalud tablets may be taken regardless of meals.
What dose of Sirdalud should be used
Relief of painful muscle spasms
Sirdalud tablets are recommended at a dose of 2 mg to 4 mg, three times daily. In severe cases, an additional dose of 2 mg or 4 mg may be taken before bedtime to minimize sedative effects.
Increased muscle tension in neurological disorders
The doctor will adjust the dose individually for the patient.
Initially, no more than 6 mg per day should be administered, divided into three doses. The daily dose may be gradually increased by 2 mg to 4 mg at intervals of one to two weeks.
The optimal response is usually achieved with a daily dose of 12 mg to 24 mg, given in 3 or 4 equal doses. A daily dose exceeding 36 mg should not be used.
If you feel the effect of the medicine is too strong or too weak, consult your doctor or pharmacist.
Use of a higher than recommended dose of Sirdalud
If you accidentally take more Sirdalud than recommended, contact your doctor or the nearest toxicology information centre immediately, or go to the nearest hospital emergency department.
Missed dose of Sirdalud
If you miss a dose of Sirdalud, take it as soon as possible. However, if less than 2 hours remain before the next scheduled dose, do not take the missed dose; instead, take the next dose at the usual time.
Do not take a double dose to make up for a missed dose.
Stopping treatment with Sirdalud
Do not stop taking Sirdalud without first discussing it with your doctor. Your doctor may recommend gradually reducing the dose before completely discontinuing the medicine, thereby reducing the risk of withdrawal symptoms. Withdrawal symptoms may include hypertension (elevated blood pressure, headache, dizziness) or tachycardia (increased heart rate).
If you have any further questions about the use of this medicine, consult your doctor or pharmacist.

4. Possible adverse reactions

Like all medicines, this medicine can cause adverse reactions, although not everyone experiences them.
After administration of lower doses, recommended, among others, to relieve painful muscle spasms, adverse reactions such as drowsiness, fatigue, dizziness, dryness of the oral mucosa, decreased blood pressure, nausea, gastrointestinal disturbances, and increased aminotransferase activity were usually mild and transient.
After administration of higher doses, recommended for the treatment of increased muscle tension, adverse reactions reported after lower doses occurred more frequently and were more pronounced. However, they rarely were so severe as to require discontinuation of the medicine. In addition, the following adverse reactions may occur: QT interval prolongation and torsade de pointes, hypotension, bradycardia, muscle weakness, insomnia, sleep disturbances, hallucinations, and acute hepatitis.
If any of the above symptoms or any other adverse reactions occur, inform your doctor.
Some adverse reactions may be serious:

hepatitis, liver failure, hallucinations, confusion, severe allergic reactions including breathing difficulties, dizziness (anaphylaxis), and swelling, mainly of the face and throat (angioedema). If any of the above-mentioned serious adverse reactions worsen, inform your doctor.

Other possible adverse reactions
Other adverse reactions include those listed below. If any of the following adverse reactions worsen, inform your doctor, pharmacist, or nurse.
Adverse reactions occurring:
very commonly (may affect more than 1 in 10 people):

drowsiness, fatigue, dizziness, gastrointestinal disturbances, dryness of the oral mucosa, muscle weakness

commonly (may affect less than 1 in 10 people):

insomnia, sleep disturbances, decreased blood pressure (including marked decrease), nausea, increased aminotransferase activity

uncommonly (may affect less than 1 in 100 people):

bradycardia (reduced heart rate)

frequency not known (cannot be estimated from the available data):

fainting, blurred vision, rash, skin redness (flushing), skin inflammation, weakness, withdrawal symptoms (such as hypertension and increased heart rate - so-called tachycardia), abdominal pain, vomiting, itching, speech disturbances, allergic reactions, loss of energy.

Reporting of adverse reactions
If any adverse reactions occur, including any adverse reactions not listed in this leaflet, inform your doctor, pharmacist, or nurse. Adverse reactions can be reported directly to the Department of Monitoring Adverse Drug Reactions of the Office for Registration of Medicinal Products, Medical Devices and Biocidal Products, Al. Jerozolimskie 181C, 02-222 Warsaw, phone: +48 22 49 21 301, fax: +48 22 49 21 309, website: https://smz.ezdrowie.gov.pl.
By reporting adverse reactions, additional information on the safety of the medicine can be collected.

5. How to store Sirdalud

Keep this medicine out of sight and reach of children.
Store below 25°C.
Do not use Sirdalud after the expiry date stated on the packaging.
The expiry date refers to the last day of the stated month.
Medicines must not be disposed of via wastewater or household waste. Ask your pharmacist how to dispose of medicines no longer required. Proper disposal helps protect the environment.

6. Contents of the pack and other information

What Sirdalud contains

The active substance is tizanidine (in the form of tizanidine hydrochloride).
The other ingredients are: anhydrous colloidal silicon dioxide, stearic acid, microcrystalline cellulose, lactose.

What Sirdalud looks like and contents of the pack
1 tablet (with a cross-shaped groove) contains 4 mg of tizanidine (in the form of tizanidine hydrochloride 4.576 mg).
PVC/PE/PVDC/Al blisters in cardboard packaging contain 10 or 30 tablets.
For more detailed information, please contact the responsible entity or the parallel importer.
Responsible entity in the Czech Republic, country of export:
Sandoz s.r.o., Pikrtova 1737/1a, 140 00 Prague 4, Czech Republic
Manufacturer:
Novartis s.r.o., Na Pankráci 1724/129, 140 00 Prague 4, Czech Republic
Novartis Pharma GmbH, Roonstrasse 25 and Obere Turnstrasse 8-10, 90429 Nuremberg, Germany
Novartis Farmaceutica S.A., Gran Vía de les Corts Catalanes 764, 08013 Barcelona, Spain
Parallel importer:
InPharm Sp. z o.o.
ul. Strumykowa 28/11
03-138 Warsaw
Repackaged in:
InPharm Sp. z o.o. Services sp. k.
ul. Chełmżyńska 249
04-458 Warsaw
Authorization number in the Czech Republic, country of export: 63/209/88-B/C
Parallel import authorization number: 317/20
[Information about the registered trademark]