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LACTEST 0.45 g Oral Solution Powder

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Doctor
5.0(16)

Sergey Ilyasov

PsychiatryNeurology7 years of experience

Dr Sergey Ilyasov is an experienced neurologist and qualified psychiatrist who provides online consultations for adults and adolescents. Combining deep neurological expertise with a modern psychiatric approach, he ensures comprehensive diagnostics and effective treatment for a wide range of conditions affecting both physical and mental health.

Dr. Ilyasov helps patients in the following cases:

  • Chronic headaches (migraine, tension-type headache), back pain, neuropathic pain, dizziness, numbness in limbs, coordination disorders.
  • Anxiety disorders (panic attacks, generalized anxiety disorder), depression (including atypical and treatment-resistant forms), sleep disturbances (insomnia, hypersomnia, nightmares), stress, burnout.
  • Chronic pain syndromes and psychosomatic symptoms (e.g., irritable bowel syndrome related to stress, vegetative-vascular dystonia).
  • Behavioral disorders and concentration difficulties in adolescents (including ADHD, autism spectrum disorders), nervous tics.
  • Memory impairments, phobias, obsessive-compulsive disorder (OCD), emotional swings, and support for post-traumatic stress disorder (PTSD).

Thanks to his dual specialization in neurology and psychiatry, Dr Sergey Ilyasov offers integrated and evidence-based care for complex conditions requiring a multidisciplinary approach. His consultations focus on accurate diagnosis, development of an individualized treatment plan (including pharmacotherapy and psychotherapeutic methods), and long-term support adapted to each patient's unique needs.

Book an online consultation with Dr. Sergey Ilyasov to receive qualified assistance and improve your well-being today.

Book a video appointment
€106
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 LACTEST 0.45 g ORAL SOLUTION POWDER

Contents of the leaflet

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

Introduction

Package Leaflet: Information for the Patient

LacTEST 0.45 g Powder for Oral Solution

Gaxilosa

Read this package leaflet carefully before using this medicine, as it contains important information for you.

  • Keep this package leaflet, as you may need to read it again.
  • If you have any further questions, ask your doctor.
  • This medicine has been prescribed for you only. Do not pass it on to others, as it may harm them, even if their symptoms are the same as yours.
  • If you experience any side effects, talk to your doctor, even if they are not listed in this package leaflet. See section 4.

Contents of the Package Leaflet

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

1. What is LacTEST and what is it used for

This medicinal product is for diagnostic use only.

LacTEST is indicated for the non-invasive diagnosis of intestinal lactase deficiency in children and adolescents from 6 years of age, adults, and elderly patients.

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 LacTEST

Do not useLacTEST:

  • If you are allergic (hypersensitive) to gaxilosa
  • If you have galactosemia or pentosuria
  • If you have severe kidney disease, portal hypertension (ascites, cirrhosis), myxedema (severe hypothyroidism), or a history of total gastrectomy and/or vagotomy, as safety studies have not been conducted in these conditions.

Warnings and precautions

Consult your doctor before taking LacTEST:

  • If you have abnormal kidney function, as the safety and efficacy of LacTEST have not been established in patients with renal insufficiency. Your kidney function may need to be evaluated before administering LacTEST.
  • If you have abnormal liver function, as the safety and efficacy of LacTEST have not been established in patients with liver insufficiency.

Children and adolescents

LacTEST can be administered to children and adolescents from 6 years of age with normal kidney function.

The safety and efficacy of LacTEST in children from 0 to 5 years of age have not been established .

Using LacTEST with other medicines

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

Do not take aspirin or indomethacin from 48 hours before the LacTEST test and until the test is completed, as aspirin and indomethacin have been reported to decrease the excretion of xylose in the urine.

It cannot be completely ruled out that there may be an interaction between LacTEST 0.45 g and arabinose contained in some foods. Therefore, patients should be advised to avoid taking foods containing arabinose at least 10 hours (maximum 24 hours) before ingesting LacTEST 0.45 g and until the test is completed.

Pregnancy and breastfeeding

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

No effects are expected during pregnancy and breastfeeding.

Driving and using machines

The influence of LacTEST on the ability to drive and use machines is negligible or non-existent.

3. How to take LacTEST

Follow the instructions for administration of this medicine exactly as described in this package leaflet or as directed by your doctor. If you are unsure, consult your doctor.

The recommended dose in adults and the elderly is 0.45 g dissolved in 100 ml of water.

The test should be performed in the following sequence:

  1. You must be fasting for 10 hours before the test, preferably during the previous night.
  2. You must urinate 2 hours before the test and again 15-30 minutes before the test.
  3. You must ingest the contents of the sachet dissolved in water.
  4. You will need to collect your urine in a suitable container provided for this purpose during the 5 hours that the test lasts, and you must urinate immediately before completing the test. During this time, you should drink up to a maximum of 500 ml of water to increase the desire to urinate.

For children from 6 to 11 years of age, the test should be performed in the following sequence:

  1. You must be fasting for 10 hours before the test, preferably during the previous night.
  2. Three hours before taking LacTEST, you can have breakfast with one or more of the following foods: a fried egg, grilled chicken breast, white rice, and 2 slices of cured ham. The cured ham must be fresh to minimize the amount of additives.
  3. You must urinate before the test.
  4. You must ingest the contents of the sachet dissolved in water.
  5. You will need to collect your urine in a suitable container provided for this purpose during the 5 hours that the test lasts, and you must urinate immediately before completing the test. During this time, you should drink up to a maximum of 500 ml of water to increase the desire to urinate.

This medicinal product is not authorized for use in children from 0 to 5 years of age.

Use in children and adolescents

LacTEST can be administered to children and adolescents from 6 years of age with normal kidney function.

No dose adjustment is necessary.

This medicinal product is not authorized for use in children from 0-5 years of age.

If you use moreLacTESTthan you should

As only 0.45 g of gaxilosa is administered, an overdose is not expected.

Medicine questions

Started taking the medicine and have questions?

Discuss your symptoms and treatment with a doctor online.

4. Possible side effects

As with all medicines, LacTEST can cause side effects, although not everybody gets them.

The following side effects have been reported:

Uncommon (affects 1 to 10 users in 1,000)

Headache, abdominal distension, abdominal pain, nausea, diarrhea, vomiting, pruritus, urticaria

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

Dizziness, syncope, flatulence, abdominal discomfort, epigastric pain, gastrointestinal noises, skin rash.

Reporting of side effects

If you experience any side effects, talk to your doctor, even if they are not listed in this package leaflet. You can also report side effects 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. Storage of LacTEST

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

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

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

This medicine is stored in sachets; it does not require special temperature conditions for storage.

Medicines should not be disposed of via wastewater or household waste. Dispose of the packaging and any unused medicine in the pharmacy's SIGRE collection point. If you are unsure, 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 ofLacTEST

  • The active substance is gaxilosa. Each sachet contains 0.45 g of gaxilosa.
  • It does not contain other ingredients.

Appearance of the product and contents of the pack.

LacTEST is presented as a white or almost white powder for oral solution contained in a sachet.

Marketing authorization holder and manufacturer

Marketing authorization holder

Venter Pharma S.L.

Almagro 1, 1º dcha

28010 Madrid

Spain

Manufacturer of the medicinal product

Infarmade, S.L.

Polígono Industrial La Isla

C/ Torre de los Herberos, 35

41703 Dos Hermanas. Sevilla

Spain

Local representative

Juste Farma, S.L.U.

Avda. De San Pablo, 27.

28823 Coslada (Madrid)

Spain

This medicinal product is authorized in the Member States of the European Economic Area under the following names:

Spain LacTEST 0.45 g powder for oral solution

Portugal LacTEST 0.45 g powder for oral solution

Date of the last revision of this package leaflet:February 2025

Other sources of information

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

Online doctors for LACTEST 0.45 g ORAL SOLUTION POWDER

Discuss questions about LACTEST 0.45 g ORAL SOLUTION POWDER, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

Doctor
5.0(16)

Sergey Ilyasov

PsychiatryNeurology7 years of experience

Dr Sergey Ilyasov is an experienced neurologist and qualified psychiatrist who provides online consultations for adults and adolescents. Combining deep neurological expertise with a modern psychiatric approach, he ensures comprehensive diagnostics and effective treatment for a wide range of conditions affecting both physical and mental health.

Dr. Ilyasov helps patients in the following cases:

  • Chronic headaches (migraine, tension-type headache), back pain, neuropathic pain, dizziness, numbness in limbs, coordination disorders.
  • Anxiety disorders (panic attacks, generalized anxiety disorder), depression (including atypical and treatment-resistant forms), sleep disturbances (insomnia, hypersomnia, nightmares), stress, burnout.
  • Chronic pain syndromes and psychosomatic symptoms (e.g., irritable bowel syndrome related to stress, vegetative-vascular dystonia).
  • Behavioral disorders and concentration difficulties in adolescents (including ADHD, autism spectrum disorders), nervous tics.
  • Memory impairments, phobias, obsessive-compulsive disorder (OCD), emotional swings, and support for post-traumatic stress disorder (PTSD).

Thanks to his dual specialization in neurology and psychiatry, Dr Sergey Ilyasov offers integrated and evidence-based care for complex conditions requiring a multidisciplinary approach. His consultations focus on accurate diagnosis, development of an individualized treatment plan (including pharmacotherapy and psychotherapeutic methods), and long-term support adapted to each patient's unique needs.

Book an online consultation with Dr. Sergey Ilyasov to receive qualified assistance and improve your well-being today.

Book a video appointment
€106
Doctor
5.0(11)

Anna Biriukova

Gastroenterology6 years of experience

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.
Book a video appointment
€66
Doctor
5.0(38)

Andrei Popov

General medicinePain medicine7 years of experience

Dr. Andrei Popov is a General Practitioner with specialized training in chronic pain. He provides online consultations for adult patients in Spain and other European countries.

Dr. Popov understands that seeking help with weight-related concerns or pain that has persisted for months can be difficult. Many patients come to him after trying different approaches without feeling truly heard. During the consultation, the doctor creates a comfortable and supportive, non-judgmental environment where the patient’s medical history can be discussed in detail, questions can be answered, and the next steps can be decided together.

Weight Management and Metabolic Health

Dr. Popov can help assess overweight, obesity, and related conditions such as hypertension, diabetes, or metabolic disorders. During the consultation, the patient’s medical history, test results, current medications, and previous treatments will be reviewed.

If you would like to learn about possible medication options or have already started treatment, the doctor can assess your situation, review the effectiveness and tolerability of the therapy, and clearly explain its benefits, potential risks, and alternatives.

Not every patient requires the same treatment. A consultation does not guarantee a prescription — it provides an objective medical assessment and a plan tailored to your individual situation.

Pain and General Medicine

You can also consult Dr. Popov regarding:

* chronic pain, migraines, neuralgia, and fibromyalgia;

* back, neck, lower back, or joint pain;

* hypertension, diabetes, and follow-up of chronic conditions;

* review of test results, medical reports, and current treatment;

* preventive medicine and a second medical opinion.

How the Consultation Works

The video consultation lasts up to 30 minutes. The doctor will listen carefully, review the information you provide, and explain the next steps in clear and understandable language.

If additional tests, an in-person consultation, or urgent medical care are required, the doctor will inform you directly.

Dr. Popov’s goal is to make sure the patient feels heard and leaves the consultation with a clear understanding of their condition and the next steps they can take.

Book a video appointment
€86
Doctor
5.0(12)

Yevgen Yakovenko

General medicine12 years of experience

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.

Book a video appointment
€72
Doctor
5.0(24)

Taisiia Proida

Psychiatry7 years of experience

Taisiia Proida is a general practitioner with a specialization in mental health and a cognitive behavioral therapist (CBT), a member of the European Psychiatric Association. She offers online consultations for adults aged 18 and over, combining evidence-based medicine with an individualised approach to mental health care. She specialises in consultations and ongoing support for a wide range of mental health concerns, including: 

  • Mood disorders: depression, bipolar disorder, postpartum depression.
  • Anxiety disorders: generalised anxiety, OCD, panic attacks, phobias.
  • Post-traumatic stress disorder (PTSD) and complex PTSD.
  • Attention deficit hyperactivity disorder (ADHD) and autism spectrum disorder (ASD). Assessment is provided only after an initial psychiatric evaluation and during a follow-up appointment.
  • Personality disorders and emotional instability.
  • Cyclothymia and mood fluctuations.
  • Schizophrenia spectrum and related conditions.

Dr. Proida combines clinical expertise with an empathetic approach, offering structured support based on evidence-based practices. Her work integrates CBT techniques with medical management, with a focus on anxiety and depressive disorders. She works with clients from different countries and cultural backgrounds, adapting her communication style and recommendations to individual needs. With experience in international clinical trials (Pfizer, Merck), she values clarity, trust, and collaborative partnership in patient care.

Book a video appointment
€156
Doctor
5.0(3)

Lina Travkina

General medicine13 years of experience

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.

Book a video appointment
€75

Get LACTEST 0.45 g ORAL SOLUTION POWDER Prescription Online

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Electronic prescription sent to your email — valid across Spain.

Frequently Asked Questions

LACTEST 0.45 g ORAL SOLUTION POWDER requires a prescription in Spain. You can check with a doctor online whether this medicine may be appropriate for your situation.

The average pharmacy price for LACTEST 0.45 g ORAL SOLUTION POWDER is around 70.25 EUR. Prices may vary depending on the manufacturer and dosage form.

LACTEST 0.45 g ORAL SOLUTION POWDER is manufactured by Venter Pharma S.L.. Pharmacy brands and packaging may differ depending on the distributor.

Doctors such as Family doctors, Psychiatrists, Dermatologists, Cardiologists, Endocrinologists, Gastroenterologists, Pulmonologists, Nephrologists, Rheumatologists, Hematologists, Infectious disease physicians, Allergists, Geriatricians, Paediatricians, Oncologists may assess whether LACTEST 0.45 g ORAL SOLUTION POWDER is appropriate, depending on your situation and local regulations. You can book an online consultation to discuss your symptoms and possible next steps.

Spain has a well-developed healthcare infrastructure across major cities such as Madrid, Barcelona, Valencia, and Seville. Pharmacies are widely available and operate under strict regulations, ensuring access to prescribed medications.

You can buy LACTEST 0.45 g ORAL SOLUTION POWDER in Madrid, Barcelona, Seville, or Valencia at any local pharmacy with a valid prescription.

To obtain a prescription, you can use Oladoctor:

Other medicines with the same active substance () include ANTICUDE, APULCO ACOMETH 0.3%/0.3%/0.3% MEDICINAL COMPRESSED GAS, APULCO COHE 0.28%/9.5% MEDICINAL COMPRESSED GAS. 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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