Quick answer: Cough syrup relieves cough symptoms in one of two ways. Expectorants loosen mucus. Suppressants quiet the cough reflex. For a wet or chesty cough with phlegm, an expectorant is what you want, and natural ivy leaf extract (found in Hedervy syrups) has clinical evidence behind it. For a dry cough, a suppressant or demulcent works better. Most coughs clear within 1 to 2 weeks with the right syrup, hydration, and rest.
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What Is Cough Syrup?
Cough syrup is a liquid medicine taken by mouth to ease cough symptoms. In Singapore, it’s the most common cough format. More common than tablets, lozenges, or sprays, because it acts quickly on the throat as it’s swallowed and is easy to dose for both adults and children.
Different cough syrups work in different ways. Some thin the mucus in your chest so you can clear it more easily. Others reduce the urge to cough. Others soothe an irritated throat. Choosing the right one depends on the type of cough you have, not on which brand has the loudest packaging at the pharmacy.
This guide walks through the four main types of cough syrup, explains each major active ingredient, and helps you match a syrup to your symptoms, including which options suit adults, children, pregnant women, and people with conditions like diabetes.
Wet Cough vs Dry Cough: Which Syrup Do You Need?
Before you walk into a pharmacy, work out which type of cough you have. If you are unsure please consult the pharmacist.
A wet cough (also called productive or chesty) brings up phlegm. Your chest feels heavy or rattling, and you can usually feel mucus moving when you cough. This is your body trying to clear an infection or irritation, and you want a syrup that helps it succeed.
A dry cough (non-productive) is tickly and persistent, with no mucus. It often happens at night, in dry air, or at the tail end of a cold. The cough itself is irritating the throat, and you want a syrup that quietens the urge to cough.
Mismatching is the most common mistake. Take a suppressant for a wet, productive cough and you trap the mucus in your lungs; the cough drags on for an extra week or more. Take an expectorant for a dry cough and you encourage coughing that the body has nothing to clear. Identify wet versus dry first.
| Symptom | Cough Type | Best Syrup Class | Hedervy Match |
|---|---|---|---|
| Phlegm in chest, rattling cough, irritated or sore throat | Wet / chesty | Expectorant | Original / Apple Flavour Ivy Leaf (Cough Syrup) / Elderberry + Ivy Leaf (Cold & Cough Syrup) |
| Tickly, hacking, no phlegm | Dry | Suppressant or demulcent | See suppressant section |
| Cold/flu + cough + chills | Mixed | Ivy leaf expectorant + steam/vapour rub | Elderberry + Ivy Leaf (Cold & Cough Syrup) |
| Child aged 2 and above with chesty cough | Wet / chesty | Family-suitable expectorant | Apple Flavour Ivy Leaf (Cough Syrup) (kid-friendly flavour) |
The 4 Main Types of Cough Syrup
Cough syrups in Singapore fall into four main categories. Each works on a different part of the cough mechanism.
1. Expectorants (and mucolytics)
Expectorants thin mucus so it’s easier to cough up. Mucolytics break down the mucus structure. Both are used for wet, chesty coughs.
The active ingredients you’ll see on the label:
- Ivy leaf extract (Hedera helix). A natural expectorant and mucolytic with an EMA herbal monograph (European Medicines Agency) and documented expectorant activity in clinical trials, including paediatric productive-cough studies. Found in Hedervy ivy-leaf syrups. Suitable for adults and children aged 2 years and above. Available over-the-counter.
- Guaifenesin. A synthetic expectorant that thins mucus and makes it easier to clear. Available over-the-counter.
- Bromhexine and N-acetylcysteine (NAC). Mucolytics that break down thick mucus. Both are available over-the-counter in Singapore.
If your main issue is thick phlegm or a rattling chest, this is the category to look at. Suppressants will work against you.
2. Cough suppressants (antitussives)
Suppressants reduce the cough reflex itself. They’re useful for dry coughs that disturb sleep or daily activity. They aren’t appropriate for productive coughs.
- Dextromethorphan (DM). The most common pharmacy-only suppressant.
- Pholcodine. An older suppressant, pharmacy-only and less common today.
- Codeine. An opioid suppressant. Tightly regulated in Singapore. Codeine-containing cough preparations are restricted to pharmacy supply under HSA limits (no more than 240ml per supply, with mandatory waiting periods) and are contraindicated for children under 12. Not freely available over the counter.
3. Demulcents and soothers
Demulcents coat the throat and soothe irritation. They’re the gentlest category, suitable for mild throat tickle and for children aged 1 and above.
- Honey-based syrups. Often the safest first option for kids 1-2 years old. (No honey under age 1.)
- Glycerin and herbal blends. Traditional Chinese herbal formulas and other botanically-based soothers.
Demulcents aren’t strong enough on their own for severe productive or dry coughs, but they pair with hydration and rest for mild symptoms.
4. Multi-ingredient herbal blends
Some Singapore cough syrups combine several natural ingredients in one bottle, typically honey, mint, and herbs.
Blends offer broader sensory coverage (cooling mint, soothing honey) at the cost of clinical specificity. No individual ingredient in a blend will have the clinical track record of standalone ivy leaf.
Active Ingredients Explained
Most cough syrup labels in Singapore list one or more of the following active ingredients. Knowing what each does makes label-reading faster.
| Ingredient | Type | Best For | OTC in SG? |
|---|---|---|---|
| Ivy leaf extract (Hedera helix) | Natural expectorant and mucolytic | Wet/chesty coughs, mucus/phlegm, throat irritation | Yes |
| Guaifenesin | Synthetic expectorant | Mucus/phlegm | Yes |
| Bromhexine | Synthetic mucolytic | Mucus/phlegm | Yes |
| N-acetylcysteine (NAC) | Synthetic mucolytic | Mucus/phlegm | Yes |
| Dextromethorphan | Suppressant | Dry cough | No |
| Honey + herbal blend | Multi-ingredient herbal | Mild throat irritation + cough | Yes |
| Codeine | Suppressant (opioid) | Severe coughs only | Tightly restricted. Pharmacy supply with HSA quantity limits; contraindicated under age 12 |
A note on ivy leaf and clinical evidence
Ivy leaf (Hedera helix) is one of the few “natural” cough syrup ingredients with clinical research behind it. The European Medicines Agency (EMA) has issued a herbal monograph for Hedera helix recognising it as a traditional expectorant for productive cough. Randomised trials and paediatric studies support its expectorant activity.
This matters when you’re comparing options. Many natural cough syrups blend several herbs together, which makes it hard to attribute clinical benefit to any single ingredient. Single-ingredient ivy leaf syrups, including Hedervy, give you both the natural-product profile and the clinical-evidence base.
How to Choose Cough Syrup by Age and Condition
Adults
Most options are open. Pick by cough type first (wet vs dry), then by drowsiness profile (some antihistamine-combination products cause sedation), then by whether you prefer a natural or synthetic ingredient.
Children 2 to 11
Strict dosing applies. Avoid codeine and pholcodine; they are not appropriate for children at any age. Avoid adult-strength suppressants. Honey-based options are safest from age 1.
For productive coughs in children aged 2 years and above, ivy leaf-based syrups are commonly used by Singapore parents because they’re available over-the-counter, plant-based, and family-friendly. Hedervy is available across major SG retailers and is Halal-certified with no added alcohol, sugar, or artificial colouring.
Children under 2
Speak to a pharmacist or GP first. Most OTC cough products aren’t suitable. The standard advice is hydration, humidified air, and small amounts of water (no honey under age 1). For babies under 6 months with a persistent cough, see a doctor. Don’t self-treat.
Pregnant or breastfeeding
A short list of options is considered safe, but always confirm with a pharmacist. Avoid codeine and combination products with multiple active ingredients.
Elderly or chronic conditions
Watch for interactions. Sugar content matters for diabetics, and many syrups now offer sugar-free options. Pseudoephedrine raises blood pressure, so avoid it if you’re hypertensive. Antihistamines that cause drowsiness are best avoided if you take other sedating medication.
OTC vs Prescription Cough Syrup in Singapore
Singapore’s Health Sciences Authority classifies cough syrups into three groups:
- GSL (General Sale List) and Traditional Medicine (TM). Sold over-the-counter at any retail pharmacy outlet including supermarkets. Includes ivy leaf-based syrups (such as Hedervy), guaifenesin-based syrups, bromhexine, simple demulcents, and most herbal blends.
- Pharmacy-only (P). Sold under pharmacist supervision at registered pharmacies. Includes dextromethorphan.
- Prescription-only (POM). Clinic or hospital only. Includes antiviral medication for influenza and stronger codeine formulations. Note: lower-strength codeine cough preparations are pharmacy-only with HSA quantity limits, not freely OTC.
For most cough cases, OTC options are sufficient. Ask for a pharmacist consultation if your cough is stubborn, if you have concerns about interactions with existing medication, or if it’s for a young child.
Where to buy in Singapore
- Major retail pharmacies. Widest range, many with apps and delivery available.
- Pharmacist-led outlets. Useful if you need guidance on dosing or interactions.
- Polyclinic/Hospital pharmacy. Walk-in retail pharmacies attached to polyclinics and hospitals.
- Online. Pharmacy websites and apps, plus online marketplaces.
Comparing Cough Syrups by Type (Singapore, 2026)
Choosing a cough syrup is easier when you start with the ingredient class. Here is how the main syrup types compare:
| Syrup type | Active ingredient | Cough type it suits | Children 2 years+ | Notes |
|---|---|---|---|---|
| Hedervy (Original / Apple Flavours / Cold & Cough) | Ivy leaf extract (Hedera helix); Cold & Cough variant adds Black Elderberry fruit extract (Sambucus nigra) with ivy leaf extract | Wet / productive / chesty cough with phlegm, throat irritation; Cold & Cough Syrup also additionally relieves runny nose, nasal congestion, and sore throat | ✅ | Natural, clinical-evidence-backed. Halal-certified (MS 2424), no added alcohol, sugar, or artificial colouring. EMA herbal monograph. Available OTC |
| Ivy-leaf syrups (single ingredient) | Ivy leaf extract (Hedera helix) | Wet / chesty cough | ✅ | EMA herbal monograph. Look for sugar-free options if needed. Available OTC |
| Synthetic expectorants | Guaifenesin | Wet / chesty cough | ✅ (2 years+) | Available OTC |
| Synthetic Mucolytics | Bromhexine or N-acetylcysteine (NAC) | Wet / chesty cough | ✅ (2 years+, check label) | Available OTC |
| Suppressants (Pharmacy-Only) | Dextromethorphan | Dry cough | ✅ (6 years+) | Not for wet/productive coughs |
| Multi-ingredient herbal blends | Honey + herbs | Mild cough, throat soothing | ✅ | Broader sensory coverage; harder to attribute clinical benefit to a single ingredient |
| Demulcents / soothers | Honey, glycerin, herbal extracts | Mild throat irritation | ✅ (1 year+ for honey-based) | Gentlest option; not strong enough for heavy productive or dry coughs |
Reading the table: for a clinical-evidence-backed natural expectorant for cough, ivy-leaf syrups are the category to look at. Hedervy is the ivy-leaf option available across major Singapore retailers, Halal-certified and suitable for the whole family.
Hedervy’s Cough Syrup Range
Hedervy is a Singapore-distributed cough syrup brand built around natural ivy leaf extract, the same active ingredient covered by the EMA herbal monograph above. The range covers three variants, formulated for cough with phlegm and throat irritation, or for cough alongside cold symptoms:
- Hedervy Original (120ml). Ivy leaf extract formulation. Suitable for adults and children aged 2 years and above.
- Hedervy Apple (120ml). Same active ivy leaf extract ingredient, kid-friendly flavour. Useful for parents managing chesty coughs in children aged 2 years and above.
- Hedervy Cold & Cough (Blackcurrant, 120ml). Ivy leaf extract with added Black Elderberry fruit extract from Germany, formulated for cold-and-cough symptoms. Traditionally used to relieve runny nose, nasal congestion, cough, and sore throat, and to reduce phlegm.
All Hedervy syrups are Halal-certified (MS 2424) with no added alcohol, sugar, or artificial colouring. Suitable for adults and children aged 2 years and above. Hedervy is stocked at major pharmacies across Singapore and can be ordered via the Hedervy online store or located using the pharmacy locator.
When to See a Doctor
Cough syrups provide symptom relief. They don’t cure underlying infections. See a doctor if:
- Your cough lasts more than 3 weeks
- You’re coughing up blood, or your phlegm is dark green/yellow with high fever
- You have shortness of breath, chest pain, or wheezing
- A child under 2 has a persistent cough
- You have an underlying condition (asthma, COPD, heart disease, diabetes) and your cough isn’t improving
- Your cough comes with high fever (above 39°C) lasting more than 3 days
In Singapore, polyclinic visits typically cost around $14 to $18 for citizens with subsidies. A private GP runs around $40 to $80. Telehealth services offer an alternative, often starting near $25. Prices vary by provider and time; confirm current rates before booking. Don’t delay if symptoms are severe.
Frequently Asked Questions
Can you buy cough syrup over the counter in Singapore?
Most cough syrups are sold OTC (over-the-counter) at retail pharmacies, polyclinic pharmacies, and independent outlets. Ivy leaf-based syrups, guaifenesin-based expectorants, bromhexine, and most herbal blends are available at general retail outlets. Some products, including dextromethorphan, require a pharmacist on duty to dispense. Codeine-containing cough preparations are tightly regulated in Singapore: pharmacy supply is restricted by HSA quantity limits and contraindicated for children under 12, with stronger formulations being prescription-only. (HSA classifications may be updated, so confirm at point of purchase.)
What is the best cough syrup for adults in Singapore?
The best cough syrup depends on the type of cough. For wet, productive and chesty coughs with phlegm, an ivy leaf-based expectorant such as Hedervy works well. Ivy leaf extracts can also soothe an irritated throat to calm the cough.
What is the best cough syrup for phlegm?
Natural ivy leaf syrups, including Hedervy, have clinical evidence supporting their expectorant and mucolytic actions and are suitable for both adults and children aged 2 years and above. Ivy leaf extracts can also soothe an irritated throat to calm the cough.
See a doctor if the cough persists past 3 weeks.
Is natural cough syrup as effective as synthetic?
For productive coughs, ivy leaf extract has documented expectorant and mucolytic activities in clinical trials, including paediatric studies. The EMA herbal monograph for Hedera helix recognises it as a natural expectorant and mucolytic in traditional medicine, with supportive clinical data.
Can children take cough syrup in Singapore?
Children 2 years and above can take ivy leaf-based syrups such as Hedervy. For age 1+, honey-based options are appropriate. Under age 1, avoid honey and most OTC products. Speak to a pharmacist or GP first. Avoid codeine and pholcodine for children at any age, and avoid adult-strength suppressants.
What cough syrup is given at the polyclinic?
Polyclinics typically dispense prescription-based formulations tailored to your diagnosis. These may include a combination of cough syrups or other regulated compounds for productive or dry coughs. Polyclinic prescriptions are subsidised: typically under $5 on top of the consultation fee (verify current rates with your polyclinic).
Should I get my cough checked before buying syrup?
Most coughs from a cold or flu can be managed with OTC cough syrups, hydration, and rest. See a doctor first if the cough comes with high fever, breathing difficulty, blood in phlegm, or persists more than 3 weeks. For children under 2 or anyone with a chronic condition, please consult a pharmacist or GP for advice.
Where can I buy Hedervy in Singapore?
Hedervy is stocked at major pharmacies across Singapore. The full pharmacy locator is on the Hedervy site, and direct orders can be placed via the online store.
Find the Right Hedervy Cough Syrup for Your Family
Single-ingredient ivy leaf (Original, Apple Flavours Cough Syrup: 35mg Hedera helix per 5ml) or dual-ingredient (Cold & Cough Syrup: 17.5mg ivy leaf + 50mg Black Elderberry per 5ml, both extracts from Germany). Clinical-evidence-backed, Halal-certified (MS 2424), no added alcohol, sugar, or artificial colouring. Suitable for adults and children aged 2 years and above. Available at major Singapore pharmacies and online.
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Last updated 2026-05-04. This article is for general information only and is not a substitute for medical advice. If you are unsure which cough syrup is right for you, speak to a pharmacist or GP. For severe or persistent symptoms, see a doctor.