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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

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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/

Online doctors for SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS

Discuss questions about SOÑODOR DIPHENHYDRAMINE 50 mg TABLETS, including use, safety considerations and prescription review, subject to medical assessment and local regulations.

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Doctor

Alexander Nazarchuk

Allergology 7 years exp.

Dr. Alexander Nazarchuk is a physician specialising in allergology and internal medicine. He provides online consultations for adults, following the principles of evidence-based medicine — no outdated treatments or unnecessary tests, with clear explanations and a personalised approach. He helps patients with a wide range of allergic and therapeutic conditions, from common day-to-day complaints to complex cases involving allergies, gastrointestinal issues, cardiovascular concerns, respiratory symptoms, and more.

You can consult Dr. Nazarchuk for:

  • Test interpretation and guidance on diagnostic plans.
  • Allergic rhinitis, hay fever, bronchial asthma (including severe cases).
  • Food and drug allergies, skin rashes, angioedema.
  • Atopic dermatitis, urticaria, contact allergies.
  • Allergen-specific immunotherapy (AIT) – initiation and ongoing management.
  • Abdominal pain, bloating, changes in bowel habits, nausea, heartburn.
  • High blood pressure and adjustment of baseline antihypertensive therapy.
  • Hyperlipidaemia and elevated cholesterol.
  • Cough, nasal congestion, fever, sore throat.
  • Anaemia, including iron deficiency and related conditions.
  • Other issues related to allergology and internal medicine.

During consultations, Dr. Nazarchuk takes a thorough, structured approach — analysing symptoms, identifying potential causes, and helping patients make informed decisions. Whether treatment, further investigation, or monitoring is needed, he explains each step clearly so you understand your health and how best to manage it.

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Doctor

Marta Reguero Capilla

Allergology 8 years exp.

Dr Marta Reguero Capilla is an allergist and immunologist who works with both adults and children. She specialises in the diagnosis, treatment, and ongoing management of allergic and immune-related conditions through online consultations. In her practice, Dr Reguero Capilla helps patients understand the causes of their symptoms, review test results, and choose appropriate treatment or monitoring strategies. Her consultations are suitable both for first-time assessments and for follow-up care over time. Patients commonly consult Dr Marta Reguero Capilla for: 

  • allergic rhinitis, seasonal allergies, and perennial allergy symptoms;
  • allergic conditions in adults and children;
  • bronchial asthma and allergy-related respiratory symptoms;
  • urticaria (acute and chronic) and angioedema;
  • food allergies and reactions to foods, additives, or medications;
  • atopic dermatitis, allergic rashes, and persistent itching;
  • unexplained or recurrent allergic reactions;
  • interpretation of laboratory tests, allergy testing, and immunology results;
  • immune system concerns, frequent infections, and reduced immune response;
  • ongoing medical follow-up and treatment adjustment.

Dr Reguero Capilla works in a structured and attentive manner, explaining medical decisions clearly and helping patients make informed choices about their own health or their child’s care. When clinically appropriate, she may provide recommendations for further tests or referrals that patients can use within Spanish medical networks, including Sanitas and DKV, in accordance with the terms and conditions of those services.

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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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