Rexom Unizet Expectorant Syrup
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- Muslim-Friendly
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Expected arrival dates based on your shipping choice:
- Standard Delivery: Arrives approx. 13 Nov 2026
Currently Out of Stock No Longer Available


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Overview
Rexom Unizet Expectorant Syrup is an oral liquid medicine from the Rexom range, formulated as an expectorant syrup with Ammonium Chloride as its active ingredient. It is sold in Malaysia as an over-the-counter (OTC) product, meaning it can be purchased without a doctor’s prescription. The syrup is presented as a ready-to-drink liquid in a shake-well bottle, designed for oral administration using the dosing instructions printed on the pack.
Each dose of the syrup delivers Ammonium Chloride, an expectorant-class ingredient commonly formulated into OTC cough syrups sold across Malaysia and the wider region. The product is manufactured as a single-ingredient formulation, without added antihistamines or decongestants, keeping its ingredient profile straightforward. It is presented as a clear liquid syrup meant to be taken after meals, and the bottle should be shaken before each use to ensure the contents are evenly mixed.
Rexom Unizet Expectorant Syrup is sold in a 100ml bottle, sized for a typical short course of use at home. The product is manufactured to Muslim-friendly (halal) standards, which some Malaysian and Singaporean households look for when choosing a household medicine cabinet staple. Dosing is differentiated by age band, with separate instructions for adults and children aged 6 to 12 years, and the product is not intended for children under 6 without medical advice.
Directions for Use
Shake the bottle well before each use to ensure the syrup is evenly mixed. Use the measuring cup or spoon provided, or a standard household 5ml medicine spoon, to measure the correct dose rather than an ordinary kitchen spoon. Rexom Unizet Expectorant Syrup is generally taken after meals. Swallow the measured dose directly; do not dilute it in water or other beverages unless advised by a pharmacist. Keep the cap tightly closed between uses and wipe the bottle neck clean if any syrup drips during pouring.
Dosage
The typical adult and child (12 years and above) dose is 10ml to 20ml, taken every 4 to 6 hours, up to a maximum of 120ml in 24 hours. For children aged 6 to 12 years, the typical dose is 5ml to 10ml every 4 to 6 hours. This product is not recommended for children under 6 years unless a doctor or pharmacist has advised otherwise. Do not exceed the maximum daily dose stated on the package, and do not take this syrup for longer than one week without consulting a doctor or pharmacist.
Shelf Life
Use before the expiry date printed on the packaging. Do not use Rexom Unizet Expectorant Syrup after the printed expiry date has passed, and discard any syrup that has changed in colour, clarity, or odour even if the expiry date has not been reached.
Storage Instructions
Store Rexom Unizet Expectorant Syrup below 30°C, away from direct sunlight and moisture, in a cool, dry place such as a medicine cabinet. Keep the bottle tightly capped when not in use, and keep it out of the reach and sight of children. Do not store the syrup in the bathroom or near a sink where humidity is high, and do not freeze the product.
Side Effects
- Nausea or vomiting
- Abdominal discomfort
- Headache
- Fatigue or weakness
- Irritability or confusion (with high doses)
- Metabolic acidosis (in rare or prolonged cases)
Contraindications
- Known hypersensitivity (allergy) to Ammonium Chloride or any other ingredient in this syrup.
- Significant kidney disease or impaired kidney function, as Ammonium Chloride is processed through the kidneys.
- Children under 6 years of age, unless a doctor or pharmacist has specifically advised its use.
- Severe liver disease, unless a doctor has reviewed and approved its use.
Drug / Food Interactions
- Ammonium Chloride may interact with medicines that alter urine acidity, such as certain antibiotics and stimulant medicines, changing how quickly those medicines are cleared from the body.
- Taking this syrup together with other cough, cold, or fever products that also contain Ammonium Chloride or similar expectorant ingredients may lead to duplicate dosing — check other medicine labels before combining products.
- Alcohol may increase drowsiness or stomach upset when combined with this syrup; limit or avoid alcohol while taking it.
- No specific food interactions are established, although taking the syrup after meals may reduce stomach discomfort.
Quick Tips
- Always shake the bottle well before measuring a dose, as the ingredients can settle over time.
- Use a proper oral measuring spoon or the cup provided rather than an everyday kitchen spoon, to keep dosing accurate.
- Keep a simple log of when each dose was taken so you do not accidentally exceed the maximum daily amount.
- Store the bottle upright, tightly capped, in a cool, dry cupboard away from children’s reach.
- Check the expiry date before each use and discard the bottle once it has expired or once the liquid looks or smells different from normal.
- Bring the bottle or its box with you if you visit a doctor or pharmacist, so they can see the exact product and strength you have been taking.
Ingredients / Active Ingredients
- Active ingredient: Ammonium Chloride, formulated as an expectorant-class ingredient in syrup form.
- Presented as an oral liquid (syrup) for administration using a measuring spoon or cup.
- Supplied in a 100ml bottle per pack.
- Formulated without added antihistamine, decongestant, or paracetamol.
- Manufactured under Muslim-friendly (halal) production standards.
Related Health Conditions
Safety Advice
Pregnancy
This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.
Breastfeeding
Use with caution. Monitor infant for potential adverse reactions.
Kidney
Not generally recommended in patients with kidney disease.
Liver
Use cautiously. Liver function monitoring may be required.
Alcohol
Caution is advised when consuming alcohol with this medicine.
Driving
Use caution while driving until you know how this medicine affects you.
Relevant Information
Precautions: Use Rexom Unizet Expectorant Syrup only within the age bands and doses stated on the label. Take care if you have kidney or liver disease, are pregnant or breastfeeding, or are already taking other cough, cold, or fever medicines, since duplicate ingredients are a common cause of accidental overdose. Avoid combining this syrup with alcohol, and use caution when driving or operating machinery until you know how the syrup affects you.
When to See a Doctor or Pharmacist: Speak with a doctor or pharmacist if symptoms persist beyond a week, if you notice signs of irritability, confusion, or unusually rapid breathing after taking this syrup, or if you experience a rash, swelling, or difficulty breathing, which may indicate an allergic reaction. Seek urgent medical attention if a child or adult swallows more than the recommended dose.
Frequently Asked Questions
Rexom Unizet Expectorant Syrup contains Ammonium Chloride as its sole active ingredient. The syrup does not contain any added antihistamine, decongestant, or paracetamol, which keeps its ingredient list straightforward. Always check the product label for the exact concentration per dose, and speak with our pharmacist team if you are comparing it with another cough syrup.
This syrup is not suitable for children under 6 years old, people with significant kidney disease, or anyone with a known allergy to Ammonium Chloride or any other ingredient in the formulation. People with liver disease, pregnant or breastfeeding women, and anyone taking other medicines regularly should check with a doctor or pharmacist before starting this syrup. If you are unsure whether it is appropriate for you, our pharmacist team can help you check.
Rexom Unizet Expectorant Syrup has a separate, lower dose for children aged 6 to 12 years, under the guidance on the product label. It is not recommended for children under 6 years of age unless a doctor has specifically advised its use. Always measure a child’s dose carefully using a proper measuring spoon or cup, and never estimate the amount by eye.
Store the bottle tightly capped in a cool, dry place away from direct sunlight and out of reach of children. Once opened, use the syrup within the period stated on the pack or as advised by the pharmacist, and always check the printed expiry date before each use. Discard the bottle if the liquid changes in colour, clarity, or smell, even before the expiry date.
Rexom Unizet Expectorant Syrup is formulated and marketed as a Muslim-friendly product. If halal certification status is important for your household, you can check the packaging for the relevant halal logo or contact our pharmacist or customer service team for the latest certification details before you order.
Yes, Rexom Unizet Expectorant Syrup is available for purchase through DoctorOnCall as an online pharmacy serving customers in Malaysia and Singapore. As with any over-the-counter product, please read the product label and follow the recommended directions, and speak with our pharmacist team if you have any questions before ordering.
Products supplied through DoctorOnCall are sourced and handled through the appropriate pharmacy supply process. As with any product, please use Rexom Unizet Expectorant Syrup according to the product instructions, and contact our pharmacist team if you have any concerns about your order.
We accept payment via Online Banking, Credit Card, and e-Wallets (Boost, GrabPay), so you can choose whichever method is most convenient for you at checkout.
DoctorOnCall provides an installment payment plan for eligible purchases where applicable. Available plans, eligibility, and terms can vary, so please contact DoctorOnCall Customer Service for the latest information on installment options for your order.
Delivery charges may depend on your delivery location and the applicable order and delivery terms. For the latest delivery fee information for Malaysia or Singapore, please contact DoctorOnCall Customer Service.
Orders to Malaysia are generally delivered within 3-5 working days, and orders to Singapore are generally delivered within 5-9 working days, although actual delivery time may vary depending on the delivery location, order processing, courier operations, weekends, and public holidays.
Shipping, return, and cancellation terms may vary depending on the product, your order details, and whether you are ordering from Malaysia or Singapore. Please refer to DoctorOnCall’s Shipping & Delivery Policy and Return, Refund & Exchange Policy, or contact Customer Service, for the specific terms that apply to your order.
Product Specifications
| Classification | Non-prescription |
|---|---|
| Ingredients / Active Ingredients | Ammonium Chloride |
| Volume | 100ml |
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