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CASENLAX 500 MG/ML ORAL SOLUTION

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About the medicine

How to use CASENLAX 500 MG/ML ORAL SOLUTION

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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.

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Introduction

Package Leaflet: Information for the User

Casenlax 500 mg/ml Oral Solution

Macrogol 4000

Read the package leaflet carefully before starting to take this medication, as it contains important information for you.

  • Keep this package leaflet, as you may need to read it again.
  • If you have any questions, consult your doctor, pharmacist, or nurse.
  • This medication has been prescribed to you only, and you should not give it to others, even if they have the same symptoms as you, as it may harm them.
  • If you experience side effects, consult your doctor, pharmacist, or nurse, even if they are not listed in this package leaflet. See section 4.

Contents of the Package Leaflet

  1. What is Casenlax and what is it used for
  2. What you need to know before taking Casenlax
  3. How to take Casenlax
  4. Possible side effects
  5. Storage of Casenlax
  6. Package Contents and Additional Information

1. What is Casenlax and what is it used for

The name of this medication is Casenlax 500 mg/ml Oral Solution.

Casenlax belongs to a group of medications called osmotic laxatives. Osmotic laxatives are medications that allow the amount of water in the stool to increase, making it easier to pass.

Casenlax is indicated for the symptomatic treatment of constipation in children from 6 months to 8 years. It should be used in conjunction with appropriate lifestyle changes and a suitable diet (see section 2).

You should consult a doctor if your symptoms worsen or do not improve.

This medication contains Macrogol (PEG = Polyethylene Glycol).

In the case of constipation, the maximum treatment period in children is 3 months.

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 taking Casenlax

Treatment of constipation with a laxative should be accompanied by a healthy lifestyle and diet.

Do not take Casenlax

  • If you are allergic to macrogol (PEG = polyethylene glycol) or any of the other components of this medication (listed in section 6).
  • If you have a disease that affects the intestine or colon (such as ulcerative colitis, Crohn's disease).
  • If you have abdominal pain of unknown cause.
  • If you have or suspect you may have a gastrointestinal perforation or are at risk of having an intestinal perforation.
  • If you have or suspect you may have an intestinal obstruction.

Warnings and Precautions

Consult your doctor, pharmacist, or nurse before starting to take Casenlax.

In the event of diarrhea after treatment with Casenlax, you may be at risk of developing electrolyte disorders (decreased levels of certain salts in the blood). You are more likely to be at risk if you are an elderly person, have liver or kidney problems, or are taking diuretics (medications that facilitate the elimination of fluids). If you are one of these people and experience diarrhea, you should visit your doctor to check your electrolyte levels with a blood test.

Children

Ask your doctor before administering this treatment to your child to rule out that the constipation is caused by an organic problem. After 3 months of treatment, your doctor should evaluate your child's clinical condition.

Using Casenlax with other medications

Casenlax may delay the absorption of other medications, making them less effective or ineffective, especially those with a narrow therapeutic index (e.g., antiepileptics, digoxin, and immunosuppressants). Inform your doctor or pharmacist if you are using, have recently used, or may need to use any other medication.

Pregnancy, Breastfeeding, and Fertility

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

Pregnancy

Casenlax can be taken during pregnancy.

Breastfeeding

Casenlax can be taken during breastfeeding.

Driving and Using Machines

Casenlax does not affect the ability to drive or operate machinery.

Casenlax contains an insignificant amount of sugars or polyolsand may be prescribed to diabetic patients or patients with a galactose-free diet.

Casenlax contains sodium benzoate

This medication contains 0.2 mg of sodium benzoate E 211 per ml.

Casenlax contains sodium

This medication contains less than 1 mmol of sodium (23 mg) per ml; i.e., it is essentially "sodium-free".

3. How to take Casenlax

Follow the administration instructions for this medication exactly as indicated by your doctor or pharmacist. If you are unsure, consult your doctor or pharmacist again.

Oral route.

The recommended dose is:

From 6 months to 1 year: 8 ml per day.

Between 1 and 4 years: 8 ml to 16 ml per day.

From 4 to 8 years: 16 ml to 32 ml per day.

Treatment should be administered in the morning in the case of a dose of 8 ml per day or divided between morning and evening in the case of higher doses. It is recommended to drink 125 ml of liquid (e.g., water) after each dose.

The daily dose should be adjusted based on the clinical effects obtained.

The effect of Casenlax occurs 24-48 hours after administration.

It is recommended to dose the oral solution using the syringe included in the package.

Improvement in intestinal transit after administration of Casenlax will be maintained by following a healthy lifestyle and diet.

Use in Children and Adolescents

In children, treatment should not exceed 3 months due to the lack of clinical trials for more than 3 months of treatment.

Treatment should be gradually discontinued and resumed if constipation recurs.

If you take more Casenlax than you should

It may cause diarrhea, abdominal pain, and vomiting that disappear when treatment is temporarily interrupted or the dose is reduced.

If you experience significant diarrhea or vomiting, you should contact your doctor as soon as possible, as you may need treatment to prevent loss of electrolytes due to fluid loss.

In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or call the Toxicology Information Service, phone: 91 562 04 20 (indicating the medication and the amount ingested). It is recommended to bring the package and package leaflet to the healthcare professional.

If you forget to take Casenlax

Do not take a double dose to make up for forgotten doses.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible Side Effects

Like all medications, this medication can cause side effects, although not everyone will experience them.

The most serious side effects are allergic reactions (hypersensitivity) that include itching (pruritus), rash, facial edema (inflammation of the face), Quincke's edema (rapid inflammation of the inner layers of the skin), urticaria, and anaphylactic shock. The frequency of these side effects has been described as unknown (cannot be estimated from available data) in the pediatric population and as very rare (may affect up to 1 in 10,000 patients) in adults. If you notice any of the reactions described above, please do not continue taking this medication and contact your doctor immediately.

Adults:

Side effects have generally been mild and transient and are mainly related to the gastrointestinal system. These side effects include:

Common (may affect up to 1 in 10 people)

  • Abdominal pain.
  • Abdominal distension.
  • Diarrhea.
  • Nausea.

Uncommon (may affect up to 1 in 100 people)

  • Vomiting.
  • Urgency to defecate.
  • Fecal incontinence.

Frequency not known (cannot be estimated from available data)

  • Electrolyte disorders (low levels of sodium and potassium in the blood: hyponatremia, hypokalemia).
  • Dehydration caused by severe diarrhea, especially in elderly patients.
  • Erythema.

In children, side effects have generally been mild and transient and are mainly related to the gastrointestinal system. These side effects include:

Common (may affect up to 1 in 10 people)

  • Abdominal pain.
  • Diarrhea (may cause perianal pain).

Uncommon (may affect up to 1 in 100 people)

  • Vomiting.
  • Bloating.
  • Nausea.

Excessive doses may cause diarrhea, abdominal pain, and vomiting that usually disappear when the dose is reduced or treatment is temporarily interrupted.

Reporting Side Effects

If you experience any side effects, consult your doctor, pharmacist, or nurse, even if they are not listed in this package leaflet. You can also report them directly through the Spanish Medication Surveillance System for Human Use (www.notificaRAM.es). By reporting side effects, you can help provide more information on the safety of this medication.

5. Storage of Casenlax

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

Do not use this medication after the expiration date stated on the package after CAD. The expiration date is the last day of the month indicated.

Once the bottle is opened, the medication can be used for 2 months.

This medication does not require special storage conditions.

Do not use this medication if you notice any visible signs of deterioration.

Medications should not be disposed of through wastewater or household waste. Deposit the packages and medications you no longer need at the SIGRE point in the pharmacy. If you are unsure, ask your pharmacist how to dispose of packages and medications you no longer need. This will help protect the environment.

6. Package Contents and Additional Information

Casenlax Composition

The active ingredient is:

Macrogol 4000

Each ml contains 500 mg of macrogol 4000

The other components (excipients) are: Sodium benzoate (E 211), potassium sorbate, citric acid, sodium citrate, sucralose, and purified water.

Product Appearance and Package Contents

Casenlax is a clear, colorless, odorless, and tasteless solution.

It is available in a 200 ml or 500 ml amber bottle with a syringe to facilitate dosing of the oral solution.

Marketing Authorization Holder and Manufacturer

Casen Recordati, S.L.

Autovía de Logroño, km. 13.300

50180 UTEBO. Zaragoza (Spain)

This medication is authorized in EEA member states under the following names:

Germany: Laxbene junior 500 mg/ml Lösung zum Einnehmen, für Kinder von 6 Monaten bis 8 Jahre

Spain: Casenlax 500 mg/ml solución oral

Italy: Casenjunior 500 mg/ml soluzione orale

Portugal: Casenlax 500 mg/ml solução oral

Date of the last revision of this package leaflet:May 2019

Other Sources of Information

Detailed and updated information on this medication is available on the website of the Spanish Agency for Medicines and Health Products (AEMPS) http://www.aemps.gob.es/

Online doctors for CASENLAX 500 MG/ML ORAL SOLUTION

Discuss questions about CASENLAX 500 MG/ML ORAL SOLUTION, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Doctor

Daniel Cichi

Family medicine 24 years exp.

Dr Daniel Cichi is a family medicine doctor with over 20 years of clinical experience. He provides online consultations for adults, supporting patients with acute symptoms, chronic conditions, and everyday health concerns that require timely medical guidance. His background includes work in emergency care, ambulance services, and family medicine, which allows him to assess symptoms quickly, identify warning signs, and help patients choose the safest next steps – whether that means home care, treatment adjustment, or in-person evaluation. Patients commonly consult Dr Daniel Cichi for: 

  • acute symptoms: fever, infections, flu-like illness, cough, sore throat, shortness of breath;
  • chest discomfort, palpitations, dizziness, fatigue, and blood pressure concerns;
  • digestive problems: abdominal pain, nausea, diarrhoea, constipation, reflux;
  • sexually transmitted infections, erectile dysfunction;
  • muscle, joint, and back pain, minor injuries, post-traumatic symptoms;
  • chronic conditions: hypertension, diabetes, high cholesterol, thyroid disorders, weight loss, hair loss;
  • review and interpretation of lab tests, imaging reports, and medical documents;
  • medication review and treatment adjustment;
  • medical advice while travelling or living abroad;
  • second opinions and guidance on whether in-person care is needed.

Dr Cichi’s consultations are structured and practical. He focuses on clear explanations, risk assessment, and actionable recommendations, helping patients understand their symptoms and make informed decisions about their health.

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€55
5.0 (40)
Doctor

Lina Travkina

Family medicine 13 years exp.

Dr. Lina Travkina is a licensed family and preventive medicine doctor based in Italy. She provides online consultations for adults and children, supporting patients across all stages of care – from acute symptom management to long-term health monitoring and prevention.

Areas of medical care include:

  • Respiratory conditions: colds, flu, acute and chronic bronchitis, mild to moderate pneumonia, bronchial asthma.
  • ENT and eye conditions: sinusitis, tonsillitis, pharyngitis, otitis, infectious and allergic conjunctivitis.
  • Digestive issues: gastritis, acid reflux (GERD), IBS, dyspepsia, bloating, constipation, diarrhoea, functional bowel symptoms, intestinal infections.
  • Urological and infectious diseases: acute and recurrent cystitis, bladder and kidney infections, prevention of recurrent UTIs, asymptomatic bacteriuria.
  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
  • Neurological and general symptoms: headache, migraine, dizziness, fatigue, sleep disturbances, reduced concentration, anxiety, asthenia.
  • Chronic pain support: back, neck, joint, and muscle pain, tension syndromes, pain associated with osteochondrosis and chronic conditions.

Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
  • Test interpretation and diagnostic guidance.
  • Structured support for undiagnosed complaints.
  • Second opinion on diagnoses and treatment plans.
  • Nutritional and lifestyle support for vitamin deficiencies, anaemia, metabolic issues.
  • Post-operative recovery support and pain management.
  • Preconception counselling and postpartum support.
  • Immunity support and strategies to reduce frequency of infections.

Dr. Travkina combines evidence-based medicine with an attentive, personalised approach. Her consultations focus not only on treatment, but also on prevention, recovery, and long-term wellbeing.

If during the consultation it becomes clear that your case requires in-person assessment or specialised care outside of her scope, the session will be terminated and the payment fully refunded.

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€70
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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.
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€58
5.0 (5)
Doctor

Tomasz Grzelewski

Dermatology 21 years exp.

Dr Tomasz Grzelewski is an MD, PhD specialist in allergy, paediatrics, general practice and sports medicine, with a clinical focus on dermatology, endocrinology, allergology and sports-related health. He has more than 20 years of clinical experience and completed his medical training at the Medical University of Łódź, where he defended his PhD thesis with distinction. His doctoral research was recognised by the Polish Society of Allergology for its innovative contribution to the field. Throughout his career, he has gained extensive expertise in diagnosing and managing a wide range of allergic and paediatric conditions, including modern allergen desensitisation techniques. For five years, Dr Grzelewski served as the Head of two paediatric departments in Poland, managing complex clinical cases and leading multidisciplinary teams. He also worked in medical centres in the United Kingdom, gaining experience across both primary care and specialist environments. With over a decade of telemedicine experience, he has provided online consultations across Europe and is valued for his clear, structured and evidence-based medical guidance. Dr Grzelewski is actively involved in clinical programmes focused on modern anti-allergic therapies. As a Principal Investigator, he leads research projects on sublingual and oral allergen desensitisation, supporting evidence-based progress in allergy treatment for both children and adults. In addition to his background in allergology and paediatrics, he completed dermatology studies through the Cambridge Education Group (Royal College of Physicians of Ireland) and a Clinical Endocrinology course at Harvard Medical School. This advanced training enhances his ability to manage skin manifestations of allergies, atopic conditions, urticaria, endocrine-related symptoms and complex immunological reactions. Patients commonly seek his care for: 

  • seasonal and perennial allergies
  • allergic rhinitis and chronic nasal symptoms
  • asthma and breathing difficulties
  • food and medication allergies
  • urticaria, atopic dermatitis and skin reactions
  • recurrent infections in children
  • sports-related health questions
  • general family medicine concerns

Dr Tomasz Grzelewski is known for his clear communication style, structured medical approach and ability to explain treatment options in a concise and accessible way. His multidisciplinary background across allergy, paediatrics, dermatology and endocrinology allows him to provide safe, up-to-date and comprehensive care for patients of all ages.

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€80
5.0 (1055)
Doctor

Andrei Popov

General medicine 7 years exp.

Dr. Andrei Popov is a family physician with specialized training in the management of chronic pain. He provides video consultations for adults in Spain and across Europe: whether you have been living with pain for months that no one has been able to properly explain, or you need to resolve a health issue without waiting weeks for an appointment.

His approach is clear: to listen, organize your case, and provide you with a practical roadmap based on evidence-based medicine and adapted to your medical history and personal needs.

Pain: how he can help

  • Chronic pain (more than 3 months
  • Migraine and recurrent or high-intensity headaches
  •  Neck, lower back, back and joint pain
  •  Post-traumatic pain after injuries or surgeries
  •  Pain of neurological origin: neuralgia, neuropathic pain, fibromyalgia

General medicine

  • Frequent respiratory infections (cold, flu, persistent cough)
  • Hypertension, diabetes and metabolic disorders
  • Review of laboratory tests and MRI/CT reports (explained in clear language)
  • Preventive medicine and health monitoring
  • Second opinions and treatment adjustments (when clinically appropriate)

What the consultation is like
 Each session lasts up to 30 minutes. We review symptoms, medical history, medications and any tests you provide, and you finish the consultation with a clear treatment plan, defined next steps, and criteria to understand when follow-up may be needed. If warning signs are detected, he will clearly advise whether you need in-person care or urgent medical attention.

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€80

Frequently Asked Questions

Is a prescription required for CASENLAX 500 MG/ML ORAL SOLUTION?
CASENLAX 500 MG/ML ORAL SOLUTION 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 CASENLAX 500 MG/ML ORAL SOLUTION?
The active ingredient in CASENLAX 500 MG/ML ORAL SOLUTION is macrogol. This information helps identify medicines with the same composition but different brand names.
Who manufactures CASENLAX 500 MG/ML ORAL SOLUTION?
CASENLAX 500 MG/ML ORAL SOLUTION is manufactured by Casen Recordati S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of CASENLAX 500 MG/ML ORAL SOLUTION 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 CASENLAX 500 MG/ML ORAL SOLUTION 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 CASENLAX 500 MG/ML ORAL SOLUTION?
Other medicines with the same active substance (macrogol) include CASENLAX 10 g ORAL SOLUTION POWDER IN SACHET, CASENLAX 10 G ORAL SOLUTION IN SACHET, CASENLAX 4 g ORAL SOLUTION POWDER IN SACHETS. 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.
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