

271 Yothapol Khemarak Phoumin Blvd (271), Phnom Penh, Cambodia
ALLERGYL 25 mg
No prescription required
This medicine is available over the counter. Still, please consult your doctor or pharmacist before using new medication.
Last updated 24/05/2026 at 2:11 AM

271 Yothapol Khemarak Phoumin Blvd (271), Phnom Penh, Cambodia
Indication
ALLERGYL contains diphenhydramine, a first-generation antihistamine used for the relief of allergic conditions including urticaria, hay fever, allergic conjunctivitis, and pruritus. It is also used as a short-term sleep aid and for motion sickness.
Ingredients
- Diphenhydramine HCl 25 mg
Direction
Adults and children over 12 years: 25–50 mg (1–2 tablets) every 4–6 hours as needed. For sleep: 50 mg at bedtime. Maximum 300 mg per day. Children 6–12 years: 12.5–25 mg every 4–6 hours under medical supervision.
Side effects
- Drowsiness and sedation (very common).
- Dry mouth
- nose
- and throat.
- Blurred vision.
- Urinary retention.
- Constipation.
- Dizziness and incoordination.
- Paradoxical excitation in children (rare).
Precautions
- Causes significant drowsiness
- do not drive or operate machinery.
- Avoid alcohol and other CNS depressants.
- Use with caution in patients with glaucoma
- urinary retention
- prostatic hypertrophy
- or thyroid disease.
- Not recommended for children under 6 years.
- Avoid in elderly patients (high risk of confusion and falls).
- Not recommended during pregnancy or breastfeeding.
Indication
ALLERGYL contains diphenhydramine, a first-generation antihistamine used for the relief of allergic conditions including urticaria, hay fever, allergic conjunctivitis, and pruritus. It is also used as a short-term sleep aid and for motion sickness.
Ingredients
- Diphenhydramine HCl 25 mg
Direction
Adults and children over 12 years: 25–50 mg (1–2 tablets) every 4–6 hours as needed. For sleep: 50 mg at bedtime. Maximum 300 mg per day. Children 6–12 years: 12.5–25 mg every 4–6 hours under medical supervision.
Side effects
- Drowsiness and sedation (very common).
- Dry mouth
- nose
- and throat.
- Blurred vision.
- Urinary retention.
- Constipation.
- Dizziness and incoordination.
- Paradoxical excitation in children (rare).
Precautions
- Causes significant drowsiness
- do not drive or operate machinery.
- Avoid alcohol and other CNS depressants.
- Use with caution in patients with glaucoma
- urinary retention
- prostatic hypertrophy
- or thyroid disease.
- Not recommended for children under 6 years.
- Avoid in elderly patients (high risk of confusion and falls).
- Not recommended during pregnancy or breastfeeding.
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