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CISTINE 250 mg TABLETS

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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 CISTINE 250 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.

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Introduction

Package Leaflet: Information for the User

Cystine 250 mg Tablets

L-cystine

Read the package leaflet carefully before starting to take this medicine because it contains important information for you.

Follow the administration instructions of the medicine contained in this package leaflet or as indicated by your doctor or pharmacist.

  • Keep this package leaflet, as you may need to read it again.
  • If you need advice or more information, consult your pharmacist.
  • If you experience side effects, consult your doctor or pharmacist, even if they are side effects not listed in this package leaflet. See section 4.
  • You should consult a doctor if it worsens or does not improve after 15-30 days.

Contents of the Package Leaflet

  1. What Cystine Tablets are and what they are used for
  2. What you need to know before taking Cystine Tablets
  3. How to take Cystine Tablets
  4. Possible side effects

5 Conservation of Cystine Tablets

  1. Contents of the pack and additional information

1. What Cystine Tablets are and what they are used for

They contain an amino acid (component of proteins) that is part of keratin. Keratin is a fundamental constituent protein of the skin, hair, and nails.

Cystine is indicated in: Treatment of cystine deficiency (constituent of keratin), which could manifest with hair loss and/or nail fragility, caused by unbalanced or restrictive diets (weight loss, vegetarian, etc.).

Cystine Tablets are indicated in adults and adolescents over 14 years of age.

Doctor consultation

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Discuss your symptoms and treatment with a doctor online.

2. What you need to know before taking Cystine Tablets

Do not take Cystine:

  • if you are allergic to L-cystine or to any of the other components of this medicine (listed in section 6).
  • if you have cystinosis (hereditary disease with possible kidney stone formation).

Warnings and precautions

Consult your doctor or pharmacist before starting to take Cystine.

You should be cautious if you have disorders in the absorption or elimination of cystine.

Interference with analytical tests: If you are going to undergo any diagnostic test (including blood, urine, etc.), inform your doctor that you are taking this medicine, as it may alter the results.

Children

Do not administer this medicine to children under 14 years of age, as its safety and efficacy have not been established in children.

Taking Cystine with other medicines

Inform your doctor or pharmacist if you are taking/using, have recently taken, or may need to take any other medicine.

No drug interaction studies have been conducted with cystine.

Pregnancy and lactation

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

As a precautionary measure, do not take Cystine during pregnancy or breastfeeding.

Driving and using machines

Cystine Tablets do not affect the ability to drive or operate machines.

Cystine Tablets contain cornstarch (gluten-free) and sucrose

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

3. How to take Cystine Tablets

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

The recommended dose is:

  • Adults and adolescents over 14 years of age:

Oral route.

It is recommended to take 4 to 6 tablets a day, divided into the three main meals.

The tablets should be taken during meals with a glass of water.

If the symptoms do not improve or worsen after 15-30 days of treatment, you should stop it and consult your doctor.

If you take more Cystine than you should

There is no information on cases of intoxication.

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 medicine and the amount ingested (or go to a medical center).

If you forget to take Cystine

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

If you have any other doubts about 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 everyone gets them.

No side effects have been described with the use of Cystine.

Reporting side effects

If you experience any type of side effect, consult your doctor, even if it is a possible side effect not listed in this package leaflet. You can also report them directly through the Spanish Medicines and Healthcare Products Agency (AEMPS) website: www.notificaRAM.es. By reporting side effects, you can help provide more information on the safety of this medicine.

5. Conservation of Cystine Tablets

No special storage conditions are required.

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

Do not use this medicine after the expiration date that appears on the packaging after CAD. The expiration date is the last day of the month indicated.

Medicines should not be disposed of through wastewater or household waste. Deposit the packaging and any unused medicines in the pharmacy's SIGRE point. In case of doubt, ask your pharmacist how to dispose of the packaging and any unused medicines. This will help protect the environment.

6. Contents of the pack and additional information

Composition of Cystine

  • The active ingredient is L-cystine. Each tablet contains 250 mg of L-cystine.
  • The other components (excipients) are: Cornstarch (gluten-free), sucrose, and talc.

Appearance of the product and contents of the pack

Cystine is presented in tablets; they are white and biconvex.

Each pack contains 40 tablets.

Marketing authorization holder and manufacturer

Marketing authorization holder

LA QUÍMICA MÉDICA, S.A.

Avda. de Sarriá, 146-148

08017 Barcelona

Tel. 93 203 21 51

Manufacturer

Noucor Health, S.A.

Avda. Camí Reial, 51-57

08184 Palau-solità i Plegamans (Barcelona)

Date of the last revision of this package leaflet: September 2013.

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

Online doctors for CISTINE 250 mg TABLETS

Discuss questions about CISTINE 250 mg TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Chikeluo Okeke

General medicine 4 years exp.

Dr Chikeluo Okeke is an internal medicine doctor with extensive international clinical experience. Originally from Nigeria, he has worked across multiple European healthcare systems and currently practises in Sweden. This professional path has given him a strong understanding of different medical approaches and the ability to work effectively with patients from diverse cultural and linguistic backgrounds.

Dr Okeke focuses on general internal medicine and adult primary care, combining clinical accuracy with careful attention to lifestyle, personal context, and everyday health concerns. His consultations are particularly well suited for people who seek medical advice online, live abroad, or need clear guidance without unnecessary complexity.

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Dr Okeke is known for his clear communication, calm approach, and cultural awareness. He listens carefully, explains medical decisions in a structured way, and supports patients in making informed choices about their health.

Online consultations with Dr Chikeluo Okeke offer reliable internal medicine care without geographic limitations, focused on medical relevance, clarity, and patient comfort.

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Joao Silva

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Dr. João Silva is a physician with training and experience in the field of General and Family Medicine, dedicated to providing healthcare focused on the well-being and quality of life of his patients. Throughout his professional career, he has developed broad clinical competencies, striving to maintain a medical practice based on scientific evidence and continuous knowledge updates.

Between 2013 and 2019, he completed the Integrated Master's Degree in Medicine at the Abel Salazar Institute of Biomedical Sciences in Porto, where he acquired a solid academic and clinical education.

Subsequently, between January 2021 and December 2021, he completed the General Internship at the Entre Douro e Vouga Hospital Center in Santa Maria da Feira, where he had the opportunity to work in different hospital settings and deepen his competencies in several areas of medicine.

From January 2022 until March 2026, he works as a Resident Physician in General and Family Medicine at USF Salvador Machado in Oliveira de Azeméis, developing clinical activities in primary healthcare, follow-up of chronic patients, and health promotion in the community.

Complementing his medical training, Dr. João Silva also completed a Postgraduate Degree in Continuing and Palliative Care at CESPU, strengthening his preparation in the comprehensive approach to patient care, especially in situations requiring prolonged care and multidisciplinary support.

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Andreea Mateescu

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Dr Andreea Mateescu is a board-certified paediatrician with 7 years of clinical experience. She graduated from Carol Davila University of Medicine and Pharmacy in Bucharest, Romania, and completed her paediatric residency at INSMC Alessandrescu-Rusescu. She also holds additional training in general ultrasound diagnostics.

Dr Mateescu focuses on providing high-quality, evidence-based medical care for children, with a strong emphasis on prevention, healthy development, and long-term wellbeing. She believes that clear, empathetic communication with both children and parents is essential for building trust and ensuring effective care.

Online consultations with Dr Mateescu are suitable for:

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Dr Mateescu works with patience, empathy, and professionalism, ensuring that each child receives attentive, individualised care. Her goal is to support healthy, balanced development while helping parents feel confident and well-informed at every stage of their child’s care.
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Yevgen Yakovenko

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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:

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  • General and paediatric surgery: hernias, appendicitis, congenital conditions, both planned and urgent surgeries.
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  • 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.
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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.
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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.

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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: 

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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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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.

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  • Chronic conditions: hypertension, diabetes, hypercholesterolemia, metabolic syndrome, thyroid disorders, excess weight.
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Additional care areas:

  • Preventive consultations and check-up planning.
  • Medical advice and follow-up consultations.
  • Test interpretation and diagnostic guidance.
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  • Nutritional and lifestyle support for vitamin deficiencies, anaemia, metabolic issues.
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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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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
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  • 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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Frequently Asked Questions

Is a prescription required for CISTINE 250 mg TABLETS?
CISTINE 250 mg TABLETS does not require a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.
Who manufactures CISTINE 250 mg TABLETS?
CISTINE 250 mg TABLETS is manufactured by La Quimica Medica S.A.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of CISTINE 250 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 CISTINE 250 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 CISTINE 250 mg TABLETS?
Other medicines with the same active substance () include CARGLUMIC ACID TILLOMED 200 mg DISPERSIBLE TABLETS, CARGLUMIC ACID WAYMADE 200 mg DISPERSIBLE TABLETS, AMVERSIO 1 G ORAL POWDER. 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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