Bg pattern

SIRDALUD 4 mg TABLETS

Prescription review online

Prescription review online

A doctor will review your case and decide whether a prescription is medically appropriate.

Talk to a doctor about this medicine

Talk to a doctor about this medicine

Discuss your symptoms and possible next steps in a quick online consultation.

This page is for general information. Consult a doctor for personal advice. Call emergency services if symptoms are severe.
About the medicine

How to use SIRDALUD 4 mg TABLETS

Translated with AI

This page provides general information and does not replace a doctor’s consultation. Always consult a doctor before taking any medication. Seek urgent medical care if symptoms are severe.

Show original

Introduction

Package Leaflet: Information for the User

Sirdalud 4 mg Tablets

Tizanidine

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

Contents of the pack and other information

  1. What is Sirdalud and what is it used for
  2. What you need to know before you take Sirdalud
  3. How to take Sirdalud
  4. Possible side effects
  5. Storing Sirdalud
  6. Contents of the pack and further information

1. What is Sirdalud and what is it used for

Sirdalud belongs to a group of medicines called muscle relaxants (medicines used to relax muscles). It is indicated for the treatment of muscle problems associated with:

  • spinal problems, such as lumbago and torticollis
  • surgical interventions, such as herniated disc or inflammatory disease of the hip

chronic disease of the hip

  • neurological disorders such as multiple sclerosis (a disease that affects the coating of the central nerves), chronic myelopathy (lesion in the spinal cord), degenerative disorders of the spinal cord, cerebrovascular accidents (strokes or cerebral hemorrhages) or cerebral palsy.
Doctor consultation

Not sure if this medicine is right for you?

Discuss your symptoms and treatment with a doctor online.

2. What you need to know before you take Sirdalud

Do not take Sirdalud

  • If you are allergic to the active substance or to any of the other ingredients of this medicine

(listed in section 6)

  • If you have severe liver disease
  • If you are taking medicines that contain fluvoxamine (used to treat depression) or ciprofloxacin (antibiotic to treat infections)

Warnings and precautions

Consult your doctor or pharmacist before starting to take this medicine, especially:

  • If you have any liver or kidney disease, as your doctor may need to adjust your dose of Sirdalud

If you are taking more than 3 tablets (12 mg of tizanidine) per day and feel nausea, fatigue, and have no appetite, you should inform your doctor as you may need to have periodic tests to check your liver function

  • If you are taking blood pressure medications at the same time, as Sirdalud may cause low blood pressure, especially when standing up or getting up

Sirdalud may cause serious symptoms due to low blood pressure, such as loss of consciousness and circulatory collapse (the volume of fluid circulating in the body is not sufficient to maintain normal metabolism)

  • If you are taking oral contraceptives at the same time, your doctor may need to adjust the dose of Sirdalud

If you are a smoker (more than 10 cigarettes per day)

  • If you are pregnant or plan to become pregnant, as Sirdalud may be harmful to the fetus.
  • Before starting treatment with Sirdalud, your doctor may ask you to have a pregnancy test to ensure you are not pregnant. During treatment with Sirdalud and at least until one day after stopping it, it is also recommended to use reliable methods to avoid pregnancy. Consult your doctor about the most suitable methods to use during this period.
  • Do not stop treatment abruptly, consult your doctor, as it may cause hypertension and tachycardia, especially if you are taking antihypertensives.
  • It may cause hypersensitivity reactions, see section 4.
  • It may cause visual disturbances and sedation, and may interfere with daily activities.

Taking Sirdalud with other medicines

Tell your doctor or pharmacist if you are using, have recently used, or might use any other medicines:

  • fluvoxamine (used to treat depression) is contraindicated
  • ciprofloxacin (antibiotic to treat infections) is contraindicated
  • antiarrhythmics (medicines to treat heart rhythm disorders)
  • cimetidine (medicines to treat duodenal or gastric ulcers)
  • cisapride (medicines to treat heartburn and esophageal reflux)
  • fluoroquinolones, acitromycin, and rifampicin (antibiotics used to treat certain infections)
  • rofecoxib (medicines used to relieve pain or inflammation),
  • oral contraceptives (medicines used to prevent unwanted pregnancies), as they may increase the effects of Sirdalud

Sirdalud may enhance the effects of:

  • antihypertensives (medicines for high blood pressure)
  • diuretics (medicines that increase urine production)
  • sedatives (medicines that reduce nervous excitement)
  • hypnotics (sleeping medicines)
  • antihistamines (medicines used for allergies)
  • potent analgesics (medicines used to treat intense pain)

Taking Sirdalud with food and drinks

Alcohol may increase the sedative effects of Sirdalud, so it is recommended that you do not drink alcohol while taking this medicine.

Pregnancy and breastfeeding

If you are pregnant or breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.

Do not take during pregnancy or breastfeeding. A pregnancy test is recommended before starting treatment.

Use contraceptive methods in women of childbearing age during treatment and at least until one day after stopping it.

Driving and using machines

Sirdalud may make you feel drowsy, dizzy, and cause sweating, see flashes, so you should not drive or use hazardous machinery while taking this medicine.

Important information about some of the ingredients of Sirdalud

This medicine contains lactose. If your doctor has told you that you have an intolerance to certain sugars, consult them before taking this medicine.

3. How to take Sirdalud

Follow exactly the administration instructions of this medicine contained in this leaflet or as indicated by your doctor. In case of doubt, ask your doctor or pharmacist.

Remember to take your medicine. Your doctor will indicate the duration of your treatment with Sirdalud. Do not stop it before or prolong it.

Swallow the tablets with a glass of water. The tablets can be broken in half.

The recommended dose is:

Adults

Half or one tablet (2 mg to 4 mg of tizanidine) three times a day. In severe cases, it may be increased up to a maximum daily dose of four tablets (16 mg of tizanidine). Patients with neurological disorders should not take more than nine tablets per day (36 mg of tizanidine).

Patient with kidney disease

A dose reduction may be necessary if you have kidney disease, so you should inform your doctor to adjust the dose accordingly.

Patient with liver disease

A dose reduction may be necessary if you have liver disease, so you should inform your doctor to adjust the dose accordingly.

Use in children

Experience in children is limited, therefore its use is not recommended in children under 18 years of age.

Elderly

Experience in the elderly is limited. Treatment should be started with the lowest dose and your doctor will adjust the dose accordingly.

If you take more Sirdalud than you should

Tell your doctor or pharmacist or go to the nearest hospital. You may need urgent medical attention. The symptoms of overdose are nausea, vomiting, low blood pressure, slow heart rate, dizziness, drowsiness, contraction of the pupils, agitation, difficulty breathing, or coma.

In case of overdose or accidental ingestion, consult the Toxicology Information Service. Phone 91 562 04 20. It is recommended to take the packaging and the leaflet of the medicine to the healthcare professional.

If you forget to take Sirdalud

Do not take a double dose to make up for forgotten doses. Take the forgotten dose as soon as possible, unless it is almost time for the next dose, in which case skip the missed dose and take the next dose when it is due.

If you stop taking Sirdalud

Do not change or stop taking Sirdalud without first consulting your doctor. Your doctor will gradually reduce the dose before stopping treatment completely. This will prevent worsening and reduce the risk of hypertension (high blood pressure, headache, dizziness) or tachycardia (rapid heart rate).

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

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

Like all medicines, this medicine can cause side effects, although not everybody gets them.

Very common(at least 1 in 10 patients) are:

Nervous system disorders: drowsiness, dizziness

Gastrointestinal disorders: gastrointestinal disturbances, dry mouth

General disorders and administration site conditions: fatigue

Musculoskeletal and connective tissue disorders: muscle weakness

Common(at least 1 in 100 patients but less than 1 in 10 patients) are:

Psychiatric disorders: insomnia, sleep disorders

Vascular disorders: decreased blood pressure. Consult your doctor immediately.

Gastrointestinal disorders: nausea

Investigations: a transient increase in liver enzymes (transaminases) may occur.

Uncommon(at least 1 in 1000 patients but less than 1 in 100 patients) are:

Cardiac disorders: slow heart rate.

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

Immune system disorders: allergic reactions, severe allergic reactions including difficulty breathing, dizziness (anaphylaxis) and swelling mainly of the face and throat (angioedema). Consult your doctor immediately.

Psychiatric disorders: hallucinations, confusion. Consult your doctor immediately.

Nervous system disorders: vertigo, speech confusion

Vascular disorders: fainting

Eye disorders: blurred vision

Gastrointestinal disorders: stomach pain, vomiting

Hepatobiliary disorders: acute hepatitis, liver failure. Consult your doctor immediately.

Skin and subcutaneous tissue disorders: skin inflammation with rash (dermatitis), skin redness (erythema), itching (pruritus), and itchy rash (urticaria and rash)

General disorders: loss of vitality and withdrawal symptoms (rebound hypertension and tachycardia).

Reporting of side effects

If you experience any side effects, talk to your doctor or pharmacist, even if it is possible side effects not listed in this leaflet. You can also report side effects directly through the Spanish Pharmacovigilance System for Human Use Medicines: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Storing Sirdalud

Keep this medicine out of the sight and reach of children.

No special storage conditions are required.

Do not use this medicine after the expiry date which is stated on the packaging. The expiry date is the last day of the month stated.

Do not use this medicine if you notice that the packaging is damaged or shows signs of tampering.

Medicines should not be disposed of via wastewater or household waste. Place the packaging and any unused medicine in the SIGRE collection point at your pharmacy. If you have any further questions, ask your pharmacist how to dispose of the packaging and any unused medicine. This will help protect the environment.

6. Contents of the pack and further information

Composition of Sirdalud

  • The active substance is tizanidine.

Each tablet contains 4 mg of tizanidine (as hydrochloride).

  • The other ingredients are lactose, microcrystalline cellulose, stearic acid, and anhydrous colloidal silica.

Appearance of the product and pack contents

Sirdalud 4 mg tablets are presented as a circular tablet, white in color, scored on one face and marked with RL on the other. Each pack contains 30 tablets.

Marketing authorization holder

BEXAL FARMACÉUTICA, S.A.

Centro Empresarial Parque Norte

Edificio Roble

C/ Serrano Galvache, 56

28033 Madrid

Spain

Manufacturer

Novartis Farmacéutica, S. A.

Gran Vía de les Corts Catalanes, 764

08013 Barcelona, Spain

or

Novartis Pharma GmbH

Roonstrasse 25

90429 Nuremberg, Germany

or

Lek Pharmaceuticals d.d.

Verovskova Ulica 57,

Ljubljana 1526,

Slovenia

Date of last revision of this leaflet:January 2020

Online doctors for SIRDALUD 4 mg TABLETS

Discuss questions about SIRDALUD 4 mg TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

0.0 (0)
Doctor

Hocine Lokchiri

General medicine 21 years exp.

Dr. Hocine Lokchiri is a French consultant with over 20 years of experience in General and Emergency Medicine. He works with adults and children, helping patients with urgent symptoms, infections, sudden health changes and everyday medical concerns that require timely evaluation. His background includes clinical practice in France, Switzerland and the United Arab Emirates, which allows him to navigate different healthcare systems and manage a wide range of conditions with confidence. Patients value his calm, structured approach, clear explanations and evidence-based decision-making.

Online consultations with Dr. Lokchiri are suitable for many situations when someone needs quick medical guidance, reassurance or a clear next step. Common reasons for booking include:

  • fever, chills, fatigue and viral symptoms
  • cough, sore throat, nasal congestion, breathing discomfort
  • bronchitis and mild asthma flare-ups
  • nausea, diarrhoea, abdominal pain, digestive infections
  • rashes, allergic reactions, redness, insect bites
  • muscle or joint pain, mild injuries, sprains
  • headache, dizziness, migraine symptoms
  • stress-related symptoms, sleep disturbances
  • questions about test results and treatment plans
  • management of chronic conditions in stable phases
Many patients reach out when symptoms appear suddenly and cause concern, when a child becomes unwell unexpectedly, when a rash changes or spreads, or when it’s unclear whether an in-person examination is necessary. His emergency medicine background is particularly valuable online, helping patients understand risk levels, identify warning signs and choose safe next steps.

Some situations are not suitable for online care. If a patient has loss of consciousness, severe chest pain, uncontrolled bleeding, seizures, major trauma or symptoms suggesting a stroke or heart attack, he will advise seeking immediate local emergency services. This improves safety and ensures patients receive the right level of care.

Dr. Lokchiri’s professional training includes:

  • Advanced Trauma Life Support (ATLS)
  • Basic and Advanced Cardiac Life Support (BLS/ACLS)
  • Pediatric Advanced Life Support (PALS)
  • Prehospital Trauma Life Support (PHTLS)
  • eFAST and critical care transthoracic echocardiography
  • aviation medicine
He is an active member of several professional organisations, including the French Society of Emergency Medicine (SFMU), the French Association for Emergency Physicians (AMUF) and the Swiss Society of Emergency and Rescue Medicine (SGNOR). In consultations, he works with clarity and precision, helping patients understand their symptoms, possible risks and the safest treatment options.
Camera Book a video appointment
€58
5.0 (140)
Doctor

Yevgen Yakovenko

General surgery 12 years exp.

Dr. Yevgen Yakovenko is a licensed surgeon and general practitioner in Spain and Germany. He specialises in general, paediatric, and oncological surgery, internal medicine, and pain management. He offers online consultations for adults and children, combining surgical precision with therapeutic support. Dr Yakovenko works with patients across different countries and provides care in Ukrainian, Russian, English, and Spanish.

Areas of medical expertise:

  • Acute and chronic pain: headaches, muscle and joint pain, back pain, abdominal pain, postoperative pain. Identifying the cause, selecting treatment, and creating a care plan.
  • Internal medicine: heart, lungs, gastrointestinal tract, urinary system. Management of chronic conditions, symptom control, second opinions.
  • Pre- and postoperative care: risk assessment, decision-making support, follow-up after surgery, rehabilitation strategies.
  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
  • Injuries and trauma: bruises, fractures, sprains, soft tissue damage, wound care, dressing, referral when in-person care is required.
  • Oncological surgery: diagnosis review, treatment planning, and long-term follow-up.
  • Obesity treatment and weight management: a medical approach to weight loss, including assessment of underlying causes, evaluation of comorbidities, development of a personalised plan (nutrition, physical activity, pharmacotherapy if needed), and ongoing progress monitoring.
  • Imaging interpretation: analysis of ultrasound, CT, MRI, and X-ray results, surgical planning based on imaging data.
  • Second opinions and medical navigation: clarifying diagnoses, reviewing current treatment plans, helping patients choose the best course of action.

Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
  • Member of the German Society of Surgeons (BDC).
  • Certified in radiological diagnostics and robotic surgery.
  • Active participant in international medical conferences and research.

Dr Yakovenko explains complex topics in a clear, accessible way. He works collaboratively with patients to analyse health issues and make evidence-based decisions. His approach is grounded in clinical excellence, scientific accuracy, and respect for each individual.

If you are unsure about a diagnosis, preparing for surgery, or want to discuss your test results – Dr Yakovenko will help you evaluate your options and move forward with confidence.

Camera Book a video appointment
€50
5.0 (29)
Doctor

Anna Biriukova

General medicine 6 years exp.

Dr Anna Biriukova is an internal medicine doctor with clinical experience in cardiology, endocrinology, and gastroenterology. She provides online consultations for adults, offering expert medical support for heart health, hormonal balance, digestive issues, and general internal medicine.

Cardiology – Diagnosis and treatment of:

  • High blood pressure, blood pressure fluctuations, and cardiovascular risk prevention.
  • Chest pain, shortness of breath, arrhythmias (tachycardia, bradycardia, palpitations).
  • Leg swelling, chronic fatigue, reduced exercise tolerance.
  • EKG interpretation, lipid profile evaluation, cardiovascular risk assessment (heart attack, stroke).
  • Post-COVID-19 cardiac monitoring and care.
Endocrinology – Diabetes, thyroid, metabolism:
  • Diagnosis and management of type 1 and type 2 diabetes, and prediabetes.
  • Individual treatment plans including oral medications and insulin therapy.
  • GLP-1 therapy– modern pharmacological treatment for weight management and diabetes control, including drug selection, monitoring, and safety follow-up.
  • Thyroid disorders – hypothyroidism, hyperthyroidism, autoimmune thyroid diseases (Hashimoto’s, Graves’ disease).
  • Metabolic syndrome – obesity, lipid disorders, insulin resistance.
Gastroenterology – Digestive health:
  • Abdominal pain, nausea, heartburn, gastroesophageal reflux (GERD).
  • Stomach and intestinal conditions: gastritis, irritable bowel syndrome (IBS), indigestion.
  • Management of chronic digestive disorders and interpretation of tests (endoscopy, ultrasound, labs).
General internal medicine and preventive care:
  • Respiratory infections – cough, colds, bronchitis.
  • Lab test analysis, therapy adjustments, medication management.
  • Adult vaccinations – planning, contraindications assessment.
  • Cancer prevention – screening strategies and risk assessment.
  • Holistic approach – symptom relief, complication prevention, and quality of life improvement.
Dr Biriukova combines internal medicine with specialist insight, offering clear explanations, personalised treatment plans, and comprehensive care tailored to each patient.
Camera Book a video appointment
€60

Frequently Asked Questions

Is a prescription required for SIRDALUD 4 mg TABLETS?
SIRDALUD 4 mg TABLETS requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
What is the active substance in SIRDALUD 4 mg TABLETS?
The active ingredient in SIRDALUD 4 mg TABLETS is tizanidine. This information helps identify medicines with the same composition but different brand names.
How much does SIRDALUD 4 mg TABLETS cost in pharmacies?
The average pharmacy price for SIRDALUD 4 mg TABLETS is around 5.89 EUR. Prices may vary depending on the manufacturer and dosage form.
Who manufactures SIRDALUD 4 mg TABLETS?
SIRDALUD 4 mg TABLETS is manufactured by Bexal Farmaceutica S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of SIRDALUD 4 mg TABLETS online?
Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether SIRDALUD 4 mg TABLETS is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.
What are the alternatives to SIRDALUD 4 mg TABLETS?
Other medicines with the same active substance (tizanidine) include SIRDALUD 2 mg TABLETS, ADALGUR 500 mg/2 mg TABLETS, BACLOFEN COMBIX 10 mg TABLETS. These may have different brand names or formulations but contain the same therapeutic ingredient. Always consult a doctor before switching or starting a new medicine.
bg-pattern-dark

Stay informed about Oladoctor

News about new services, product updates and useful information for patients.

Follow us on social media