Product image of Neosynephrine (Phenylephrine Hydrochloride) supplied by GNH India

Neosynephrine

Active Ingredient:
Phenylephrine Hydrochloride
Origin:
EU

Neosynephrine (Phenylephrine Hydrochloride)

Phenylephrine Hydrochloride, the active ingredient in Neosynephrine, is a sympathomimetic (α1‑adrenergic agonist) presented as a nasal formulation for intranasal use. It relieves nasal congestion associated with the common cold, sinusitis, and allergic rhinitis in adults and children.

GNH India supplies Neosynephrine as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Teofarma S.R.L.

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Indications & Clinical Uses

Neosynephrine acts on the nasal mucosa to alleviate congestion caused by upper‑respiratory conditions.

  • Common cold nasal congestion: reduces swelling of nasal passages to improve airflow.
  • Sinusitis‑related congestion: decreases mucosal edema, facilitating sinus drainage.
  • Allergic rhinitis: constricts dilated nasal vessels, easing breathing during allergic episodes.

How It Works

  • Phenylephrine hydrochloride selectively stimulates α1‑adrenergic receptors on the smooth muscle of nasal mucosal blood vessels. This activation triggers vasoconstriction, which diminishes blood flow to the nasal lining, leading to reduced edema and improved airway patency. The localized effect provides rapid decongestion without significant systemic sympathetic activation when used as directed.

Side Effects

Phenylephrine may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

  • Nasal irritation or burning sensation.
  • Mild headache.
  • Transient increase in blood pressure.
  • Dryness of the nasal mucosa.
  • Sneezing.
  • Dizziness.

Serious or Rare Side Effects

  • Severe hypertension.
  • Cardiac arrhythmia.
  • Reflex bradycardia.
  • Allergic reaction (rash, itching, swelling).
  • Nasal septum perforation with prolonged misuse.
  • Acute angle‑closure glaucoma in susceptible individuals.

Precautions & Warnings

Before using Neosynephrine, consider the following safety measures.

  • Cardiovascular disease: avoid if you have uncontrolled hypertension or heart disease.
  • Thyroid disorders: use with caution in hyperthyroidism.
  • Diabetes: monitor blood glucose as vasoconstriction may affect levels.
  • Pregnancy and lactation: consult a healthcare professional before use.
  • Age restrictions: not recommended for children under 6 years without medical advice.
  • Store at room temperature: keep below 25°C, protect from moisture and direct sunlight.

Avoid Interactions

Phenylephrine can interact with several medication classes; awareness helps prevent adverse events.

Major Interactions (Avoid)

  • Monoamine oxidase inhibitors (MAOIs): risk of hypertensive crisis.
  • Tricyclic antidepressants: additive vasoconstrictive effect.
  • β‑blockers: may blunt cardiovascular response.

Moderate Interactions (Monitor Closely)

  • Other nasal decongestants: increased risk of rebound congestion.
  • Diuretics: may enhance blood‑pressure‑raising effect.
  • Herbal stimulants (e.g., ephedra): potential for excessive sympathetic stimulation.

Frequently Asked Questions

Neosynephrine is an over‑the‑counter nasal spray that provides temporary relief of nasal congestion caused by the common cold, sinusitis, and allergic rhinitis. It works by narrowing blood vessels in the nasal passages, reducing swelling and improving airflow.

Phenylephrine is a selective α1‑adrenergic agonist. When applied intranasally, it binds to α1 receptors on the smooth muscle of nasal blood vessels, causing vasoconstriction. This reduces mucosal edema and opens the nasal airway, easing breathing.

The appropriate dose of Neosynephrine is determined by a qualified healthcare professional based on the patient’s age, condition, and response. Users should follow the prescriber’s instructions or the product label for the recommended number of sprays per dose.

Safety data for phenylephrine in pregnancy and lactation are limited. Women who are pregnant, planning to become pregnant, or breastfeeding should consult their physician before using Neosynephrine to weigh potential benefits against any risks.

To order Neosynephrine, submit an enquiry on the product page at gnhindia.com specifying the required quantity. GNH India works with hospitals, pharmacies and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details and any necessary import documentation.

Neosynephrine’s phenylephrine is a sympathomimetic that provides rapid, short‑term decongestion similar to pseudoephedrine but with a lower systemic stimulant profile. Unlike oxymetazoline, phenylephrine has a shorter duration of action, which may reduce the risk of rebound congestion when used as directed.

Neosynephrine should be stored at room temperature, below 25 °C, in its original packaging. Keep the container tightly closed, protect it from moisture and direct sunlight, and discard any product that appears discolored or contaminated.

Neosynephrine is administered intranasally. The user gently inserts the spray tip into one nostril, closes the opposite nostril, and sprays the prescribed number of actuations while breathing in gently. The process is repeated in the other nostril if directed by the prescriber.

Serious risks, though uncommon, include severe hypertension, cardiac arrhythmias, and allergic reactions such as rash, swelling, or anaphylaxis. Individuals with uncontrolled high blood pressure, heart disease, or known hypersensitivity to phenylephrine should avoid use and seek medical advice promptly if symptoms arise.

Neosynephrine should not be used by people with known hypersensitivity to phenylephrine, uncontrolled hypertension, severe coronary artery disease, or by children under six years of age unless specifically advised by a healthcare professional.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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