Diphenhydramine Hydrochloride + Ammonium Chloride + Sodium CitrateThird Party Manufacturing in India

Diphenhydramine Hydrochloride acts as a potent first-generation H1 receptor antagonist with significant anticholinergic and central sedative properties. It blocks the action of histamine, reducing allergic responses, suppressing the cough reflex directly in the medullary cough center, and drying up excessive respiratory secretions.

Ammonium Chloride is a systemic expectorant. It works by irritating the gastric mucosa, which reflexively stimulates respiratory tract secretions. This biological effect helps the body decrease the viscosity of mucus, making it easier to cough up. Sodium Citrate complements this action by functioning as a mucolytic and systemic alkalinizer. It increases the volume and reduces the thickness of bronchial secretions.

Unlike cough suppressants meant for purely dry coughs, this combination addresses productive or "chesty" coughs mixed with allergic symptoms. By pairing a soothing, cough-suppressing antihistamine with two effective expectorants, the formulation loosens stubborn phlegm while calming the throat, making it highly effective for night-time respiratory relief.

Therapeutic Uses

The combination of Diphenhydramine Hydrochloride, Ammonium Chloride, and Sodium Citrate is prescribed for the treatment of:

• Productive Cough: Thins and loosens tough respiratory mucus, making it easier to expel accumulated phlegm.
• Allergic Cough: Relieves coughing triggered by allergens, along with associated sneezing and runny nose.
• Bronchitis and Asthma Symptoms: Assists in clearing congested airways in mild bronchial conditions.
• Throat Irritation: Provides a soothing effect on the inflamed respiratory tract, aiding restful sleep.

Why Manufacturers Choose This Combination

This specific blend of an antihistamine and dual expectorants is a cornerstone product for treating chesty coughs with underlying allergic components. Its slightly sedating profile is often preferred by physicians for patients whose sleep is disturbed by severe coughing fits. The established safety profile and undeniable clinical efficacy maintain its position as a top-selling respiratory formulation.

This makes the Diphenhydramine, Ammonium Chloride, and Sodium Citrate combination one of the most sought-after expectorant syrups for third party manufacturing in India, with consistent demand from PCD franchise operators and export companies catering to global OTC markets.