Medofed (Pseudoephedrine Hydrochloride, Triprolidine Hydrochloride)

Medofed, a sympathomimetic decongestant and H1‑antihistamine combination, is used to treat conditions affecting the nasal passages and allergic responses.

• Nasal congestion: the pseudoephedrine component constricts nasal blood vessels, decreasing swelling and allowing easier breathing.
• Allergic rhinitis: triprolidine blocks H1 receptors, reducing sneezing, itching, and watery nasal discharge.
• Common cold symptoms: the combined action relieves nasal blockage, runny nose and pressure associated with viral upper‑respiratory infections.

• Pseudoephedrine Hydrochloride acts as an alpha‑adrenergic agonist, causing vasoconstriction of the nasal mucosal blood vessels, which reduces edema and improves airway patency. Triprolidine Hydrochloride is a first‑generation H1‑receptor antagonist that prevents histamine‑mediated vasodilation, increased vascular permeability and sensory nerve stimulation, thereby diminishing allergic inflammation and associated symptoms. The two agents work synergistically to provide rapid, clinically effective decongestion and antihistamine relief.

Like all medications, Medofed may cause unwanted reactions ranging from mild to serious.

Common Side Effects

• Dry mouth
• Drowsiness
• Insomnia
• Headache
• Nausea
• Dizziness

Serious or Rare Side Effects

• High blood pressure
• Irregular heart rhythm
• Severe allergic reaction (anaphylaxis)
• Hallucinations or psychosis (rare)

Before using Medofed, consider the following precautions to ensure safe and effective therapy.

• Hypertension: avoid use in patients with uncontrolled high blood pressure.
• Glaucoma: use with caution in individuals with narrow‑angle glaucoma.
• MAO inhibitors: do not combine with monoamine oxidase inhibitors or within 14 days of discontinuation.
• Children: not recommended for children under 12 years without medical supervision.
• Pregnancy and breastfeeding: consult a healthcare professional before use.
• Store at room temperature: keep in the original container, protect from moisture and heat.

Medofed can interact with other medicines; some combinations should be avoided while others require monitoring.

Major Interactions (Avoid)

• MAO inhibitors: risk of hypertensive crisis.
• Other sympathomimetic decongestants: may cause excessive vasoconstriction and cardiovascular stress.
• Certain antidepressants (e.g., tricyclics): increase risk of cardiac side effects.

Moderate Interactions (Monitor Closely)

• Antihypertensive agents: pseudoephedrine may reduce their effectiveness, requiring blood pressure monitoring.
• CNS depressants or alcohol: triprolidine’s sedative effect may be enhanced, leading to increased drowsiness.