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SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS

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About the medicine

How to use SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS

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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 User

Sonodor Diphenhydramine 50 mg Tablets

Diphenhydramine Hydrochloride

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

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

  • 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 7 days.

Contents of the Package Leaflet

  1. What Sonodor Diphenhydramine is and what it is used for
  2. What you need to know before taking Sonodor Diphenhydramine
  3. How to take Sonodor Diphenhydramine
  4. Possible side effects

5 Conservation of Sonodor Diphenhydramine

  1. Package Contents and Additional Information

1. What Sonodor Diphenhydramine is and what it is used for

Sonodor Diphenhydramine 50 mg tablets are indicated in adults for the symptomatic treatment of occasional insomnia, particularly when there is difficulty falling asleep, such as in situations of restlessness, frequent interruptions during sleep, or early morning waking.

You should consult a doctor if it worsens or does not improve after 7 days.

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 starting to take Sonodor Diphenhydramine

Do not take Sonodor Diphenhydramine:

  • if you are allergic to diphenhydramine hydrochloride or any of the other components of this medication (listed in section 6),
  • if you have asthma,
  • if you have difficulty breathing,
  • if you have chronic pulmonary emphysema (severe lung disease),
  • if you have glaucoma (increased intraocular pressure),
  • if you have difficulty urinating due to prostate problems,
  • if you are pregnant or breastfeeding.

Warnings and Precautions

Consult your doctor or pharmacist before starting to take Sonodor Diphenhydramine.

It is recommended to administer the medication only before bedtime. It should not be administered for a period exceeding 7 days, nor to minors under 18 years, unless with medical knowledge or recommendation, as insomnia may be a symptom of a more important disease. If morning somnolence appears, reduce the dose.

Children and Adolescents

Sonodor Diphenhydramine can only be used in young people between 12 and 18 years under medical recommendation.

The safety and efficacy of Sonodor Diphenhydramine have not been established in children under 12 years. No data are available.

Other Medications and Sonodor Diphenhydramine

Inform your doctor or pharmacist if you are using, have recently used, or may need to use any other medication.

Sonodor Diphenhydramine should not be administered concomitantly with alcohol, sedatives, tranquilizers, or other central nervous system depressants, due to a possible additive effect. MAOI antidepressants (monoamine oxidase inhibitors) may prolong and intensify the anticholinergic effects of diphenhydramine, so if you are being treated with any of them, you should consult your doctor before taking this medication.

Interference with diagnosis: Sonodor Diphenhydramine may interfere with skin tests using allergens. It is recommended to discontinue this medication at least 3 days before starting such tests and inform the doctor.

Taking Sonodor Diphenhydramine with Food, Beverages, and Alcohol

Consuming alcohol along with Sonodor Diphenhydramine may intensify the effect of the medication.

Pregnancy, Breastfeeding, and Fertility

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

Do not administer during pregnancy, especially during the first and last trimester, unless, in the medical opinion, the benefits justify the potential risks.

Do not administer during breastfeeding.

Driving and Using Machines

Do not drive or operate tools or machines during treatment with Sonodor Diphenhydramine because this medication produces somnolence.

Sonodor Diphenhydramine contains Lactose

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

3. How to take Sonodor Diphenhydramine

Follow the administration instructions of this medication indicated by your doctor or pharmacist exactly. In case of doubt, consult your doctor or pharmacist again.

Sonodor Diphenhydramine is administered orally. Swallow the tablets with the help of some liquid, 20-30 minutes before bedtime.

The recommended dose is:

  • Adults: 1 tablet per day (50 mg)

Use in Children and Adolescents

  • It can only be used in adolescents between 12 and 18 years under medical recommendation.

Adolescents between 12 and 18 years: The recommended dose is half a tablet per day (25 mg), always under medical recommendation.

The tablets can be divided into two equal halves.

  • Do not administer to children under 12 years. The safety and efficacy of Sonodor Diphenhydramine have not been established in children under 12 years. No data are available.

If you take more Sonodor Diphenhydramine than you should

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 medication and quantity ingested.

If you forget to take Sonodor Diphenhydramine

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

If you have any other doubts about the use of this medication, 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 medications, this medication can produce side effects, although not all people experience them.

After administration of diphenhydramine hydrochloride, the following adverse reactions have been reported, whose frequency cannot be established with precision:

Occasionally, diarrhea, anorexia (loss of appetite), stomach discomfort or pain, constipation, difficulty urinating, dizziness, confusion, dry mouth, and blurred vision may occur.

Rarely, tremors, skin rash (skin eruption), and photosensitivity have been described.

Exceptionally, certain blood disorders such as leukopenia, thrombocytopenia, and hemolytic anemia have been described.

In most cases, the reported side effects were mild and did not require discontinuation of treatment.

Reporting of Side Effects

If you experience any type of side effect, consult your doctor or pharmacist, even if it is a possible side effect not listed in this package leaflet. You can also report them directly through the Spanish Medication Pharmacovigilance System: https://www.notificaram.es. By reporting side effects, you can contribute to providing more information on the safety of this medication.

5. Conservation of Sonodor Diphenhydramine

Keep this medication out of sight and reach of children.

No special storage conditions are required.

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

Medications should not be disposed of through wastewater or household waste. Deposit the packaging and medications you no longer need at the SIGRE point in the pharmacy. Ask your pharmacist how to dispose of the packaging and medications you no longer need. This way, you will help protect the environment.

6. Package Contents and Additional Information

Composition of Sonodor Diphenhydramine

  • The active ingredient is diphenhydramine hydrochloride. Each tablet contains 50 mg of diphenhydramine hydrochloride.
  • The other components (excipients) are lactose monohydrate, microcrystalline cellulose, stearic acid, anhydrous colloidal silica, and magnesium stearate.

Appearance of the Product and Package Contents

Scored tablets for oral administration.

The tablets can be divided into two equal halves.

Sonodor Diphenhydramine is presented in aluminum-polyethylene strips in boxes with 10 and 16 tablets.

Marketing Authorization Holder and Manufacturer

Laboratorios Urgo S.L. - C/Florida, 29 - 20120 HERNANI (Guipúzcoa) Spain

Date of the Last Revision of this Package Leaflet: 05/2017

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/

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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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  • 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.
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Experience and qualifications:

  • 12+ years of clinical experience in university hospitals in Germany and Spain.
  • International education: Ukraine – Germany – Spain.
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  • 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.

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  • acute symptoms: fever, infections, flu-like illness, cough, sore throat, shortness of breath;
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  • digestive problems: abdominal pain, nausea, diarrhoea, constipation, reflux;
  • sexually transmitted infections, erectile dysfunction;
  • muscle, joint, and back pain, minor injuries, post-traumatic symptoms;
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Online consultations with Dr Mateescu are suitable for:

  • preventive check-ups and monitoring of growth and development;
  • vaccination planning, including personalised and catch-up schedules;
  • assessment of psychomotor, emotional, and physical development;
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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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  • 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.
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Additional care areas:

  • Preventive consultations and check-up planning.
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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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Lisa Drigo

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Dr Lisa Drigo is an experienced paediatrician based in Italy with over 30 years of clinical practice. She graduated from Università Cattolica del Sacro Cuore in Rome and has spent decades working within the Italian healthcare system, supporting children and families with both acute care and long-term prevention.

She is well familiar with Italian paediatric standards, including local vaccination schedules, preventive check-ups, growth monitoring, and everyday medical issues faced by families living in Italy. This makes her consultations especially valuable for parents who want guidance that aligns with local medical practice.

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  • Digestive symptoms such as abdominal pain, nausea, diarrhoea or constipation.
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  • Vaccination advice according to Italian schedules.
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Dr Drigo communicates in a clear, calm, and reassuring way, helping parents understand what is happening and what steps to take next. Online consultations allow families to receive reliable paediatric guidance aligned with Italian medical practice, without unnecessary stress or waiting.

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During his residency, he undertook training placements at Hospital Clínic de Barcelona, where he trained for several months in the psychiatric consultation-liaison unit. He also completed another placement at Hospital de Cruces in Bilbao, in the first-episode psychosis unit.

Throughout his professional career, Dr. Alvarez Guerrero has sought to complement his medical training with psychotherapeutic tools that allow him to address mental health disorders from a comprehensive perspective. For this reason, he specialized in Brief Strategic Psychotherapy through the Spanish Society of Psychosomatic Medicine and Psychotherapy, an approach focused on targeted and effective interventions.

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He has also shown a particular interest in the field of legal psychiatry, completing an Official Master’s Degree in Legal, Forensic and Criminological Psychopathology at the Universitat Internacional de Catalunya. This training has allowed him to acquire the necessary competencies for the preparation of psychiatric expert reports in judicial and medico-legal contexts, thereby broadening the scope of his professional activity.

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Hocine Lokchiri

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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
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  • 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.

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Dr. Lokchiri’s professional training includes:

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  • 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 SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS?
SOÑODOR DIPHENHYDRAMINE 50 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 SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS?
SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS is manufactured by Laboratorios Urgo S.L.. Pharmacy brands and packaging may differ depending on the distributor.
Which doctors can assess the use of SOÑODOR DIPHENHYDRAMINE 50 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 SOÑODOR DIPHENHYDRAMINE 50 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 SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS?
Other medicines with the same active substance () include DEXDOR 100 micrograms/ml concentrate for infusion solution (25x2 ml), DEXDOR 100 micrograms/ml concentrate for infusion solution, DEXDOR 100 micrograms/ml concentrate for infusion solution. 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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