PRODUCT DETAILS

Composition

Typical formulation contains:

• Diphenhydramine → first-generation antihistamine (sedating)
• Ammonium chloride → expectorant (helps loosen mucus)

Uses / Indications

Used for relief of:

• Dry or irritating cough
• Cough associated with colds
• Throat irritation
• Runny nose and sneezing (due to antihistamine effect)
• Chest congestion (helps loosen mucus via ammonium chloride)

Direction for Use

• Take as directed on the label or by a clinician
• Usually taken every 6–8 hours
• Use measuring cup/spoon for accuracy
• Do not exceed recommended daily dose
• Can be taken with or without food

Side Effects

Common:

• Drowsiness (very common due to diphenhydramine)
• Dry mouth
• Dizziness
• Blurred vision
• Mild stomach upset

Less common:

• Restlessness (especially in children)
• Thickened mucus (can sometimes feel “heavier” if dehydrated)

Rare:

• Allergic reaction
• Confusion (elderly patients)

Warnings

• Causes significant drowsiness → avoid driving or alcohol
• Use cautiously in:
• Glaucoma
• Asthma (thickened secretions may worsen symptoms in some cases)
• Enlarged prostate (urinary retention risk)
• Not recommended for young children unless prescribed
• Do not combine with other sedating antihistamines or cough syrups

Interactions

May interact with:

• Alcohol → increased sedation
• Sleeping pills or sedatives → excessive drowsiness
• Other antihistamines → additive side effects
• MAO inhibitors → dangerous CNS effects

Cautions

Use carefully in:

• Elderly patients (confusion, falls risk)
• Liver disease (slower drug metabolism)
• Respiratory conditions (use cautiously in chronic bronchitis/asthma)