Package Leaflet: Information for the User
TAU-KIT®100 mg Soluble Tablets
13C-Urea
Read the entire package leaflet carefully before starting to use this medication, as it contains important information for you.
Contents of the Package Leaflet
TAU-KIT®belongs to the group of medications called other diagnostic agents. TAU-KIT®is a breath test indicated to determine the presence in your stomach of a bacterium called Helicobacter pylori, which may be responsible for the discomfort you are experiencing.
This medication is for diagnostic use only.
Do not take TAU-KIT®
If you are allergic to the active ingredient or any of the other components of this medication (listed in section 6).
If you have a genetic disorder called Phenylketonuria.
Warnings and Precautions
Consult your doctor before starting to take TAU-KIT®
Diagnosis with other methods (endoscopy) may be indicated to examine the presence of any other complications, such as ulcers, autoimmune gastritis, or malignant tumors.
Other Medications and TAU-KIT®
If you are being treated with antibiotics for Helicobacter pyloriinfection, you should wait 4 weeks without medication before performing the diagnostic test with TAU-KIT®, as it could result in a false-negative result.
If you are undergoing treatment with an antacid (medication to relieve heartburn, such as omeprazole, etc.) or an anti-ulcer medication (bismuth salts, etc.), you should wait 2 weeks without medication before performing the diagnostic test.
Tell your doctor or pharmacist if you are using, have recently used, or may need to use other medications.
Using TAU-KIT®with Food and Drinks
As your doctor will indicate, before performing the test, you should fast for at least 6 hours, preferably from the night before, and take 200 ml of a drink rich in citric acid (Citral pylori®) when starting the test, in the case of adults, and 100 ml in the case of children over 5 years old.
Pregnancy, Breastfeeding, and Fertility
If you are pregnant or breastfeeding, or think you may be pregnant or plan to become pregnant, consult your doctor or pharmacist before using this medication.
Consult your doctor or pharmacist before using this medication.
Driving and Using Machines
No effects on the ability to drive or use machines have been described at the recommended dose.
Important Information about Some Components of Citral pylori®.
Performing the breath test with 13C-urea requires prior administration of Citric Acid (European Protocol). The TAU-KIT package includes a sachet of Citral pylori® (4.2 g of anhydrous Citric Acid). Each sachet of Citral Pylori® also contains aspartame (E-951) and orange yellow S (E-110)
Each sachet contains 120 mg of aspartame, equivalent to 60 mg/100 ml.
Aspartame contains a source of phenylalanine, which may be harmful in cases of phenylketonuria (PKU), a rare genetic disease in which phenylalanine accumulates because the body is unable to eliminate it properly.
This medication may cause allergic reactions because it contains orange yellow S (E-110). It can cause asthma, especially in patients allergic to acetylsalicylic acid.
Follow your doctor's instructions for taking this medication exactly. If in doubt, consult your doctor or pharmacist again.
TAU-KIT®is a 13C urea breath test used for diagnostic testing, which must be performed in the presence of qualified personnel who will indicate the instructions to follow at all times.
To perform the test correctly, which takes approximately 40 minutes and should be performed preferably in the morning, you must fast for 6 hours, not smoke, and be at rest. The test begins with the ingestion of the contents of the Citral pylori® sachet.
The normal dose is:
Adults over 18 years: one tablet (100 mg of 13C-urea) dissolved in 125 ml of water.
Use in children over 5 years and adolescents:
There is not enough data to recommend its use in patients under 5 years old.
Children over 5 years: half a tablet (50 mg of 13C-urea) dissolved in 50 ml of water.
Method of administration:
The medication is administered orally.
If you vomit while performing the test, a second test should be performed, but not before 24 hours.
Follow these instructions unless your doctor has given you different ones.
If you take more TAU-KIT®than you should
Since the package contains a single tablet of 100 mg of 13C-urea, overdose is not expected. However, if you have taken more TAU-KIT® than you should, consult your doctor or pharmacist immediately.
In case of overdose or accidental ingestion, consult your doctor or pharmacist immediately or go to a medical center immediately or call the Toxicology Information Service, phone 91 562 04 20, indicating the medication and the amount ingested.
If you forget to take TAU-KIT®
Since the product consists of a single tablet and is used at a specific time established by your doctor, it is not expected that you will forget to take the medication.
Do not take a double dose to make up for forgotten doses.
If you stop treatment with TAU-KIT®
It is considered that the treatment consists of taking the single tablet with 100 mg of 13C-urea from the package, so it is not expected that there will be an interruption of treatment.
If you have any other questions about the use of this product, ask your doctor or pharmacist.
Like all medications, TAU-KIT® can cause side effects, although not everyone gets them.
No side effects have been reported.
Reporting Side Effects
If you experience any side effects, consult your doctor or pharmacist, even if they are not listed in this package leaflet. You can also report them directly through the Spanish Pharmacovigilance System for Human Use Medications: https://www.notificaram.es. By reporting side effects, you can contribute to providing more information on the safety of this medication.
Keep this medication out of the sight and reach of children.
No special storage conditions are required.
Do not use this medication if you notice any signs of deterioration in the package.
Expiration Date
Do not use this medication after the expiration date shown on the package, after the abbreviation CAD. The expiration date is the last day of the month indicated.
Medications should not be thrown away in drains or trash. Deposit the packages and medications you no longer need in the SIGRE point of your pharmacy. If in doubt, ask your doctor or pharmacist how to dispose of packages and medications you no longer need. This will help protect the environment.
Composition of TAU-KIT®
The other components of the tablet are: microcrystalline cellulose, povidone K90, colloidal silica, magnesium stearate, and sodium croscarmellose.
Appearance of the Product and Package Contents
TAU-KIT®is presented in packages with a single soluble tablet containing 100 mg of 13C urea and a sachet of Citral pylori®. It also includes 2 pre-dose sample collection tubes (BASAL), 2 post-dose sample collection tubes (POST), and two flexible tubes, adhesive labels identifying the sample, one of which is placed in the indicated place on the case.
The 50-kit format is presented as 50 kits of 4 air sample collection tubes in each kit, 1 tablet of 13C urea in each kit, and 1 sachet of Citral pylori® in each kit.
Only some package sizes may be marketed.
Marketing Authorization Holder and Manufacturer
Marketing Authorization Holder and Manufacturer:
ISOMED PHARMA, S.L.
c/París, nº4, Parque Empresarial Európolis
28232, Las Rozas Madrid
Spain
This package leaflet was last revised inOctober 2019
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
This information is intended only for healthcare professionals.
It is essential to follow these instructions precisely to ensure the reliability of the diagnosis.
Specific Instructions:
screw until the cap does not turn easily and then turn carefully another quarter turn. If the container remains open for more than 30 seconds, the test could give a false result.
The average price of TAU-KIT SOLUBLE TABLETS in October, 2025 is around 30.46 EUR. Prices may vary depending on the region, pharmacy, and whether a prescription is required. Always check with a local pharmacy or online source for the most accurate information.