Description
Indications
Used as a first-generation antihistamine for the symptomatic relief of allergic conditions and as a temporary sleep aid. It is indicated for:
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Allergic Reactions: Relief of sneezing, runny nose, itchy/watery eyes, and itchy throat associated with hay fever or upper respiratory allergies.
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Urticaria (Hives): Management of itchy, red welts on the skin.
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Antitussive: Relief of dry, non-productive cough due to minor throat and bronchial irritation.
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Motion Sickness: Prevention and treatment of nausea, vomiting, and dizziness.
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Occasional Sleeplessness: A temporary aid to help with difficulty falling asleep.
Dosage and Administration
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Adults and Children 12 years and over:
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For Allergy/Cough: Take 1 to 2 capsules (25 mg to 50 mg) every 4 to 6 hours. Do not exceed 12 capsules (300 mg) in 24 hours.
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For Sleep Aid: Take 2 capsules (50 mg) once daily at bedtime, or as directed by a doctor.
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For Motion Sickness: Take 1 to 2 capsules (25 mg to 50 mg) 30 minutes before starting activity.
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Children 6 to 12 years:
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Take 1 capsule (25 mg) every 4 to 6 hours. Do not exceed 6 capsules (150 mg) in 24 hours.
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Administration: Swallow the capsule whole with a full glass of water. It can be taken with or without food.
Adverse Reactions
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Central Nervous System: Significant drowsiness, sedation, dizziness, disturbed coordination, or headache. In children, it may occasionally cause paradoxical excitation (restlessness/nervousness).
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Gastrointestinal: Dry mouth, nose, and throat; nausea, constipation, or epigastric distress.
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Respiratory: Thickening of bronchial secretions (mucus).
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Cardiovascular: Heart palpitations or low blood pressure.
Important Safety Precautions
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Drowsiness Warning: This medication causes marked drowsiness. Do not drive, operate heavy machinery, or engage in hazardous activities while taking this product.
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Alcohol Restriction: Avoid alcoholic drinks while using this medication, as alcohol will significantly increase the sedative (depressant) effects on the central nervous system.
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Pre-existing Conditions: Consult a doctor before use if you have glaucoma, asthma, emphysema, chronic bronchitis, or difficulty urinating due to an enlarged prostate.
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Drug Interactions: Do not use with any other product containing diphenhydramine (including topical versions) or with other sedatives/tranquilizers without medical advice.
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Elderly Patients: Use with caution in older adults, as they are more prone to dizziness, sedation, and confusion, which increases the risk of falls.
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Pregnancy and Nursing: Consult a healthcare professional before use. Diphenhydramine is excreted in breast milk and may cause irritability or sedation in a nursing infant.

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