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LACTEST 0.45 g ORAL SOLUTION POWDER

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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 LACTEST 0.45 g ORAL SOLUTION POWDER

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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 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.

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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
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  • 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)
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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 (25)
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.
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  • 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
5.0 (760)
Doctor

Alina Tsurkan

Family medicine 13 years exp.

Dr. Alina Tsurkan is a licensed family medicine physician based in Portugal, offering online consultations for adults and children. She provides professional primary care, with a focus on prevention, accurate diagnosis, and long-term management of acute and chronic conditions.

Dr. Tsurkan supports patients with a wide range of health issues, including:

  • Respiratory infections: cold, flu, bronchitis, pneumonia, and lingering coughs.
  • ENT conditions: sinusitis, tonsillitis, otitis (ear infections), sore throat, allergic rhinitis.
  • Eye conditions: allergic or infectious conjunctivitis, red eyes, irritation.
  • Digestive issues: acid reflux (GERD), gastritis, irritable bowel syndrome (IBS), constipation, bloating, nausea.
  • Urinary and reproductive health: urinary tract infections (UTIs), cystitis, prevention of recurrent infections.
  • Chronic diseases: hypertension, elevated cholesterol, weight management.
  • Neurological complaints: headaches, migraines, sleep disturbances, fatigue, general weakness.
  • Children’s health: fever, infections, digestive issues, follow-ups, vaccination guidance.

She also provides:

  • IMT medical certificates for driving licence exchange in Portugal.
  • Personalised preventive care and wellness consultations.
  • Interpretation of test results and medical reports.
  • Follow-up care and medication review.
  • Support in managing multiple coexisting conditions.
  • Remote prescription management and medical documentation.

Dr. Tsurkan’s approach is evidence-based and holistic. She works closely with each patient to develop an individualised care plan that addresses both symptoms and root causes. Her goal is to empower patients to take control of their health and maintain well-being through lifestyle adjustments, routine check-ups, and early intervention.

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€55

Frequently Asked Questions

Is a prescription required for LACTEST 0.45 g ORAL SOLUTION POWDER?
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.
How much does LACTEST 0.45 g ORAL SOLUTION POWDER cost in pharmacies?
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.
Who manufactures LACTEST 0.45 g ORAL SOLUTION POWDER?
LACTEST 0.45 g ORAL SOLUTION POWDER is manufactured by Venter Pharma S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of LACTEST 0.45 g ORAL SOLUTION POWDER 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 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.
What are the alternatives to LACTEST 0.45 g ORAL SOLUTION POWDER?
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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