Package Leaflet: Information for the User
Sintonal 0.25 mg tablets
Brotizolam
Read this package leaflet carefully before you start taking this medicine, because it contains important information for you.
Contents of the package leaflet:
Sintonal belongs to a group of medicines called benzodiazepines.
Sintonal is used for insomnia that requires medication.
Do not take Sintonal
Warnings and precautions
Talk to your doctor or pharmacist before you start taking Sintonal:
Using Sintonal with other medicines
Tell your doctor or pharmacist if you are using, have recently used, or might use any other medicines.
Concomitant use of Sintonal with other central nervous system depressants, such as major tranquilizers (antipsychotics), sedatives, sleep-inducing medicines (hypnotics), anxiolytics, antidepressants, opioid analgesics, antiepileptics, anesthetics, or sedating antihistamines, may potentiate the central nervous system effects of Sintonal. For this reason, your doctor may adjust the dose.
In the case of opioid analgesics, the increased feeling of euphoria may facilitate the development of psychological dependence.
The effects of Sintonal may increase if used with medicines that inhibit the liver enzyme CYP 3A4, such as antifungal medicines (e.g., ketoconazole). On the other hand, the effects of Sintonal may decrease if used with medicines that induce this liver enzyme (CYP 3A4), such as the antibiotic rifampicin.
Using Sintonal with alcohol
When Sintonal is used in combination with alcohol, sedation, fatigue, and impaired concentration may increase.
Talk to your doctor even if any of the above circumstances have occurred to you at any time.
Pregnancy, breastfeeding, and fertility
If you are pregnant, breastfeeding, think you may be pregnant, or plan to become pregnant, consult your doctor or pharmacist before using this medicine.
There are no data available on the use of brotizolam in pregnant or breastfeeding women. Consequently, the use of Sintonal is not recommended during pregnancy and breastfeeding. If necessary, your doctor will assess the convenience of using it.
Women of childbearing age who are trying to become pregnant or think they may be pregnant and are prescribed this medicine should contact their doctor to stop treatment.
If you take Sintonal regularly during the last stages of pregnancy, your child may experience withdrawal symptoms (see the "Warnings and precautions" section).
Driving and using machines
Sintonal is a sleep-inducing medicine. Do not drive or use machines if you feel drowsy or if you notice that your attention and reaction are reduced. Pay special attention when starting treatment or increasing the dose. Note that Sintonal may cause sedation, memory loss (amnesia), and alteration of psychomotor skills during treatment. This alteration may increase the risk of falls and traffic accidents. Additionally, if you take Sintonal simultaneously with alcohol and/or central nervous system depressants, this alteration may be potentiated. If you do not sleep sufficiently, your state of alertness may be altered.
Therefore, it is not recommended to drive vehicles or operate machinery that requires special attention or concentration until it is verified that the ability to perform these activities is not affected.
Sintonal contains
Lactose monohydrate (lactose)
If your doctor has told you that you have an intolerance to some sugars, consult with them before taking this medicine.
Sodium
This medicine contains less than 1 mmol of sodium (23 mg) per tablet; this is essentially "sodium-free".
Follow exactly the administration instructions of this medicine given by your doctor. In case of doubt, consult your doctor or pharmacist again.
Remember to take your medicine.
If you think the action of Sintonal is too strong or too weak, tell your doctor or pharmacist.
The recommended dose is 1 tablet (0.25 mg of brotizolam) per day in adult patients.
Elderly patients
The recommended dose is 0.5 or 1 tablet (0.125-0.25 mg of brotizolam) per day in patients over 65 years old. Your doctor will indicate that you start treatment with the lowest recommended dose. Your doctor will not exceed the recommended dose of 1 tablet (0.25 mg of brotizolam) per day, as there is a higher risk of central nervous system-related side effects.
Patients with liver impairment
In patients with liver function disorders, the dose should be reduced. Benzodiazepines are not indicated in the treatment of patients with severe liver impairment, as they may cause encephalopathy.
Patients with renal impairment
In cases of renal function disorders, available data indicate that no dose adjustment is necessary.
Patients with chronic respiratory failure with hypercapnia
In patients with chronic respiratory failure with hypercapnia, the dose should be reduced due to the risk of respiratory depression, especially at night.
Sintonal should be taken orally.
Sintonal tablets can be swallowed with a little liquid or left to dissolve under the tongue, but they should always be taken on an empty stomach.
Sintonal should be taken immediately before bedtime, and you should have a period of rest or sleep of 6-7 hours.
Your doctor will indicate the duration of your treatment with Sintonal. Do not stop treatment before, as there is a risk of withdrawal symptoms. Withdrawal symptoms may occur in the usual interval, especially at high doses.
Treatment should be as short as possible, from a few days to a maximum of 2 weeks.
Because the risk of withdrawal symptoms or rebound effects is higher if Sintonal treatment is stopped abruptly, your doctor may prescribe a gradual dose reduction to end treatment.
If you take more Sintonal than you should
In case of overdose or accidental ingestion, consult your doctor, pharmacist, or call the Toxicology Information Service at 91 562 04 20, indicating the medicine and the amount taken. Bring the package and package leaflet to the healthcare professional.
Taking high doses of brotizolam may cause deep sleep that can lead to coma, depending on the amount taken. However, this does not pose a risk to life if treated properly and if no central nervous system depressants, including alcohol, have been taken. In mild cases, symptoms of benzodiazepine overdose include drowsiness, mental confusion, and lethargy, and in more severe cases, symptoms may include uncoordinated movements, decreased muscle tone, hypotension, weak breathing, coma, and very rarely death.
Your doctor will treat you in intensive care, paying special attention to lung and heart function. As an antidote, your doctor may administer flumazenil (a medicine that can counteract the sedative effect of benzodiazepines).
If you forget to take Sintonal
Do not take a double dose to make up for forgotten doses.
If you stop taking Sintonal
During treatment with Sintonal, you may develop physical and psychological dependence. The risk of dependence increases with dose and duration of treatment and is also higher in patients who have previously abused alcohol, medicines, or drugs. If you develop physical dependence and stop treatment abruptly, withdrawal symptoms may occur, which can be headache, muscle pain, anxiety, and extreme tension, restlessness, confusion, or irritability. In severe cases, it may include a feeling of strangeness to the environment (derealization) or to oneself (depersonalization), increased auditory acuity (hyperacusis), numbness and tingling of the limbs, increased sensitivity to light, noise, or physical contact, hallucinations, or convulsions/epileptic seizures.
One of the first symptoms of dependence development is the presentation of rebound effects, in which the symptoms that led to treatment with Sintonal reappear in a potentiated form when the medicine is stopped. This phenomenon may be accompanied by other reactions such as altered emotional state, anxiety, and agitation.
Because the risk of withdrawal symptoms or rebound effects is higher if Sintonal treatment is stopped abruptly, your doctor may prescribe a gradual dose reduction to end treatment.
If you have any further questions about the use of this medicine, ask your doctor or pharmacist.
Like all medicines, this medicine can cause side effects, although not everybody gets them. The classification of side effects is based on the following frequencies:
Very common: | Affects more than 1 in 10 patients |
Common: | Affects between 1 and 10 in 100 patients |
Uncommon: | Affects between 1 and 10 in 1,000 patients |
Rare: | Affects between 1 and 10 in 10,000 patients |
Very rare: | Affects less than 1 in 10,000 patients |
Frequency not known | Frequency cannot be estimated from available data |
Common side effects (may affect between 1 and 10 in 100 patients) are drowsiness, headache, and stomach and intestinal discomfort.
Uncommon side effects (may affect between 1 and 10 in 1,000 patients) are intense nightmares, worsening of pre-existing depression, mood changes, anxiety, dependence on the medicine, feeling of emotional numbness (lack of energy), inappropriate behavior, agitation, altered sexual desire (libido), dizziness, sedation, lack of coordination of voluntary movements (ataxia), memory loss (anterograde amnesia), dementia, mental disorders, alteration of psychomotor skills, visual disturbances (double vision), dry mouth, liver disorders including changes in liver function tests, yellowing of the skin (jaundice), skin reactions, muscle weakness, fatigue, irritability, paradoxical reactions (more likely in elderly patients), withdrawal syndrome, rebound effects, traffic accidents, and falls.
Other rare side effects (may affect between 1 and 10 in 10,000 patients) are restlessness, confusion, and impaired alertness.
Reporting of side effects
If you experience any side effects, talk to your doctor or pharmacist, even if it is possible side effects not listed in this package leaflet. You can also report side effects directly through the Spanish Medicines and Healthcare Products Agency (AEMPS) website: https://www.notificaram.es. By reporting side effects, you can help provide more information on the safety of this medicine.
Keep this medicine out of the sight and reach of children.
Do not use this medicine after the expiry date stated on the package. The expiry date is the last day of the month indicated.
Do not store above 25°C.
Medicines should not be disposed of via wastewater or household waste. Return any unused medicine to a pharmacy for proper disposal. If you have any further questions, ask your pharmacist.
Composition of Sintonal
Appearance and packaging of the product
Sintonal tablets are round, slightly biconvex, with beveled edges and white or almost white in color. One side is marked with the codes 13A and 13A separated by a score line, and the other side is marked with the company logo. The tablet can be divided into equal doses.
It is available in packs containing 20 tablets.
Marketing authorization holder and manufacturer
Marketing authorization holder:
Boehringer Ingelheim España, S.A.
Prat de la Riba, 50
08174 Sant Cugat del Vallès (Barcelona)
Spain
Manufacturer:
Delpharm Reims, S.A.S.
10 Rue Colonel Charbonneaux
5100 Reims
France
Date of last revision of this package leaflet:June 2020
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.gob.es/.
The average price of SINTONAL 0.25 mg tablets in October, 2025 is around 2.97 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.