Allersin 4mg/5ml Syrup 60ml

Allersin 4mg/5ml Syrup is a first-generation antihistamine formulated as a liquid, with chlorpheniramine maleate as its active ingredient. It's a long-trusted option, particularly for children and others who prefer a syrup over tablets. The most commonly reported side effect is drowsiness, along with dry mouth, dizziness, and occasionally blurred vision, so it's good to be aware of how your body responds before driving or operating machinery. This is a Pharmacy Only Medicine, meaning a pharmacist can guide you on suitability even without a doctor's prescription. If you're picking this up for yourself or a family member, it's worth asking your pharmacist about the right dose for the person's age.

Dosing depends on age, and typically ranges from a few millilitres up to three or four times daily for adults, with lower amounts for children. Always refer to the product label or your pharmacist's guidance for the exact amount suited to the person taking it.

• Drowsiness or sedation
• Dry mouth
• Dizziness
• Blurred vision
• Constipation
• Difficulty urinating
• Thickened bronchial secretions
• Restlessness (occasionally seen in children)

Store below 30°C in a cool, dry place, away from direct sunlight and moisture. Keep the bottle tightly capped and out of reach of children.

• Always use the measuring device that comes with the bottle
• Avoid alcohol while taking this medicine
• Be cautious with driving or operating machinery until you know how it affects you
• Keep out of reach of children, especially given the sweet syrup taste
• Store away from heat and humidity to preserve potency
• Don't use for children under 2 years unless a healthcare professional has advised it

Shake the bottle well before use and measure the dose using the measuring cup or oral syringe provided, not a regular spoon. It can be taken with or without food, generally a few times a day as directed on the label or by your pharmacist.

Unopened, the syrup is generally stable for around 2–3 years from manufacture; once opened, it's best used within the period stated on the bottle, often a few months. Always check the printed expiry date before use.

Chlorpheniramine maleate 4mg per 5ml — a first-generation antihistamine (H1-receptor antagonist) that blocks the action of histamine in the body.

Not suitable for individuals with a known hypersensitivity to chlorpheniramine or related antihistamines. It should be avoided or used only under medical guidance in people with severe asthma, narrow-angle glaucoma, or urinary retention, and is not recommended for newborns or premature infants.

Combining this syrup with alcohol, sedatives, or other drowsiness-inducing medicines can intensify sedative effects. It may also interact with certain antidepressants (MAOIs) and other anticholinergic medicines, so it's important to tell your pharmacist about everything else you're taking.

Can I order Allersin Syrup online for delivery within Singapore?
Yes, as a Pharmacy Only Medicine, it can generally be purchased through our online pharmacy with pharmacist review, without needing a doctor's prescription.

Is this product genuine and properly registered for sale?
Yes, we only stock products registered with the relevant health authority and sourced from licensed distributors.

How fast is delivery to Singapore addresses?
Delivery windows vary by courier and location, and will be shown at checkout before you confirm your order.

Do I need to speak to a pharmacist before ordering?
Our platform includes pharmacist support for Pharmacy Only Medicines, and you're welcome to reach out with any questions before purchasing.

How should I store the syrup after it's delivered?
Keep it below 30°C, tightly capped, away from sunlight and moisture, and out of children's reach.

Can I buy this in bulk for household use?
Yes, subject to standard quantity limits for pharmacy medicines; our checkout will flag if any quantity requires additional verification.

What packaging can I expect on delivery?
The syrup arrives in its original, sealed manufacturer bottle with batch number and expiry date visible.