GNH USA

Europe — EMA

Nodisen (Diphenhydramine Hydrochloride)

GNH USA supplies Nodisen (Diphenhydramine Hydrochloride), a first‑generation antihistamine for allergy relief and short‑term insomnia.

Diphenhydramine Hydrochloride

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What is Diphenhydramine Hydrochloride?

Diphenhydramine Hydrochloride, the active ingredient in Nodisen, is a first‑generation H1 antagonist presented as an oral dosage form for oral use. It is employed to relieve allergic symptoms, reduce nasal congestion, and aid short‑term sleep in adults and children when appropriate, and is marketed across the European Union for over‑the‑counter availability.

GNH USA supplies Nodisen as a licensed, GDP‑compliant international pharmaceutical supplier serving pharmacies, hospitals, and clinics worldwide, with established quality‑assured manufacturing and distribution networks.

What is Diphenhydramine Hydrochloride used for?

Diphenhydramine works on histamine‑mediated pathways to alleviate several common allergic and cold‑related conditions.

Allergic rhinitis: reduces sneezing, itching, and nasal discharge. Urticaria (hives): alleviates itching and wheal formation. Common cold: eases runny nose and sneezing. Short‑term insomnia: promotes sleep onset when used briefly.

What are the side effects of Diphenhydramine Hydrochloride?

Diphenhydramine may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects: - Drowsiness - Dry mouth - Dizziness - Blurred vision

Serious or Rare Side Effects: - Cardiac arrhythmias - Severe allergic reactions (anaphylaxis)

What precautions apply to Diphenhydramine Hydrochloride?

When using Diphenhydramine, consider the following safety measures.

Pregnancy: Category B1; use only if benefit outweighs risk. Driving: May cause drowsiness; avoid operating machinery. Elderly: Increased sensitivity to sedative effects; start with lowest effective dose. Drug abuse: Not indicated for recreational use; monitor for misuse. Medical conditions: Caution in patients with glaucoma, urinary retention, or asthma. Store at ambient temperature below 25°C: keep in original packaging, protect from moisture and direct sunlight.

What does Diphenhydramine Hydrochloride interact with?

Diphenhydramine can interact with several drug classes; awareness helps prevent adverse outcomes.

Major Interactions (Avoid): - Alcohol: additive CNS depression leading to profound sedation. - Monoamine oxidase inhibitors (MAOIs): risk of hypertensive crisis. - Other antihistamines: excessive sedation and anticholinergic load.

Moderate Interactions (Monitor Closely): - CNS depressants (benzodiazepines, opioids): may enhance sedative effect. - Anticholinergic drugs (e.g., atropine): increase anticholinergic side effects. - QT‑prolonging agents (certain antiarrhythmics): may increase risk of cardiac arrhythmias.

Frequently asked questions

What is Nodisen used for?+
Nodisen contains diphenhydramine hydrochloride and is used to relieve symptoms of allergic rhinitis, urticaria (hives), and common cold such as sneezing, runny nose, and itching. It is also employed as a short‑term sleep aid to help adults who have occasional difficulty falling asleep.
How does diphenhydramine work?+
Diphenhydramine blocks H1 histamine receptors in peripheral tissues, preventing histamine‑induced swelling, itching, and increased secretions. It also crosses the blood‑brain barrier, antagonizing central H1 receptors, which produces sedation. Its anticholinergic activity further reduces nasal and bronchial secretions.
What is the usual dose of Nodisen?+
The appropriate dose of Nodisen is determined by a qualified prescriber based on the patient’s age, condition, and response. Typical adult regimens for allergy relief range from 25 mg to 50 mg every 4–6 hours, not exceeding 300 mg per day, but exact dosing must follow the prescribing information.
Is Nodisen safe during pregnancy or breastfeeding?+
Diphenhydramine is classified as pregnancy category B1, indicating that animal studies have not shown risk and there are no adequate human studies. It may be used during pregnancy only if the potential benefit justifies the potential risk. The drug passes into breast milk; nursing mothers should consult their healthcare provider before use.
How do I order Nodisen from GNH USA?+
To place an order, submit an enquiry on the Nodisen product page at gnh-usa.com, specifying the required quantity. GNH USA works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements), and necessary import documentation.
How does Nodisen compare with other antihistamines?+
Nodisen is a first‑generation antihistamine, which provides rapid symptom relief but commonly causes sedation and anticholinergic effects. Second‑generation antihistamines (e.g., cetirizine, loratadine) are less sedating but may have a slower onset. Choice depends on the clinical need, such as requiring a sleep‑inducing effect versus daytime alertness.
How should Nodisen be stored and handled?+
Store Nodisen at ambient temperature below 25 °C, in its original packaging, protected from moisture and direct sunlight. Keep the product out of reach of children and do not use it after the expiration date printed on the label.
How is Nodisen administered?+
Nodisen is taken orally with a full glass of water. It may be taken with or without food, although taking it with food can reduce mild stomach upset. Swallow tablets whole; do not crush or chew unless the formulation specifically permits it.
What are the most serious risks to watch for with Nodisen?+
Serious adverse reactions, although rare, include cardiac arrhythmias and severe allergic responses such as anaphylaxis. Patients should seek immediate medical attention if they experience rapid heartbeat, chest pain, difficulty breathing, swelling of the face or throat, or a rash that spreads quickly.
Who should not use Nodisen?+
Nodisen should be avoided in individuals with known hypersensitivity to diphenhydramine or any excipients, in patients with narrow‑angle glaucoma, severe urinary retention, or uncontrolled asthma. It is also contraindicated in newborns and infants under six months of age.
Information provided on this page is for educational use by procurement and clinical professionals. Always consult a licensed healthcare provider for medical advice and prescribing decisions. GNH USA supplies this product subject to applicable regulatory and licensing requirements.
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Product details

Drug
Diphenhydramine Hydrochloride
Route
Oral Use
Manufacturer
Polfarmex S.A.
Origin
EU

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