Cough Syrup – Best UK Picks for Adults, Kids and Babies

Walking into a Boots, Superdrug or Tesco pharmacy, the cough syrup aisle can feel overwhelming. Rows of bright boxes promise relief for dry coughs, chesty coughs, tickly throats and multi-symptoms — but the evidence behind many of these products is thinner than the packaging suggests. For parents, the confusion is even greater: what is safe for a child, and what should never reach a baby’s lips?

In 2024, the UK cough medicine market underwent a significant shift when codeine linctus was reclassified as a prescription-only medicine. Combined with longstanding NHS guidance advising against over-the-counter cough syrups for children under six, the landscape now demands a more informed approach. This guide brings together official medical advice, ingredient breakdowns, and product comparisons to help you choose the right cough syrup for your situation — or decide whether you need one at all.

Below, we answer the most common questions UK consumers ask about cough syrups, covering adults, children, babies, brands, regulations, and home remedies.

What is the best cough syrup for adults in the UK?

• NHS does not recommend cough syrup for children under 6 years; honey and lemon are preferred.
• Codeine linctus was reclassified as a prescription-only medicine (POM) in the UK in 2024 due to abuse risk and respiratory depression concerns.
• Chesty cough syrups typically contain Guaifenesin or Carbocisteine; dry cough syrups use Dextromethorphan, Pholcodine, or Glycerol.
• Boots 5-in-1 multi-symptom syrup covers dry, chesty, sore throat, tickly cough, and congestion.
• The BNF (British National Formulary) lists cough suppressants as having limited evidence for efficacy in children.
• Many UK cough syrups are now sugar-free, including Covonia Chesty Cough Sugar Free Syrup.
• Hot lemon and honey is cited by NHS as an effective symptomatic treatment comparable to OTC syrups.

Best cough syrup for dry tickly cough

For a dry, tickly cough that produces no mucus, suppressants are the typical choice. Benylin Dry and Tickly Cough Syrup uses glycerol and demineralised liquid sugar to coat and soothe the throat lining. According to Benylin, “Glycerol and demineralised liquid sugar soothe the tickling sensation of your cough.” Boots own-brand dry cough syrup contains dextromethorphan, a centrally acting cough suppressant suitable for adults and children over 12.

Best cough syrup for chesty cough (mucus)

Chesty coughs require expectorants to loosen phlegm so it can be coughed up. Covonia Chesty Cough Sugar Free Syrup contains guaifenesin, which increases bronchial secretions to make mucus easier to clear. The brand states: “Our chesty cough sugar free syrup contains guaifenesin to help clear mucus.” Alternatives containing carbocisteine are also available and work by altering the consistency of mucus.

Multi-symptom cough syrups: when to use them

Boots 5-in-1 Multi-Symptom Action Cough Syrup combines multiple active ingredients to target dry cough, chesty cough, sore throat, tickly cough, and nasal congestion simultaneously. While convenient, these broad-spectrum products may contain ingredients you do not need. The NHS advises using targeted treatments where possible and being cautious about overlapping active substances — especially paracetamol, which appears in many multi-symptom formulas and can lead to unintentional overdosing if taken alongside other paracetamol medications.

Can I give cough syrup to my baby or children?

Cough syrup for babies under 1 year: what the NHS says

The NHS is unequivocal: do not give cough syrup to babies under 6 years old, and honey is toxic to infants under 12 months. For babies under 1, the recommended approach is to increase fluid intake, place a pillow under the mattress to raise the head for easier breathing, and treat fever or pain with children’s paracetamol or ibuprofen at the correct dose. NHS sources warn that cough medicines can make children sleepy and do not cure the underlying cough.

Safe cough medicines for children over 6

For children aged 6 to 12, OTC cough medicines can be considered supplementary to basic care, but should only be purchased in a pharmacy where professional advice is available. The BNF for Children advises that cough suppressants and expectorants should not be used routinely in this age group and only if symptoms are troubling, and then for a limited duration. Products like CalCough Children’s Syrup (from 1 year) and Tixylix Baby Syrup (not under 3 months) are available, but parents should always consult a pharmacist first.

Cough syrup dosage for children by age

Dosage varies by product and active ingredient. A general rule from NHS guidance: for children over 1, honey and lemon can be given — one teaspoon of honey up to four times a day. For children aged 6–12 using OTC syrups, always follow the specific pack or pharmacist instructions. The BNF for Children (cough preparations) is the authoritative reference for healthcare professionals and should guide any off-label use.

What is the difference between Covonia, Benylin, and Boots cough syrups?

Covonia chesty cough sugar free syrup (Guaifenesin)

Covonia is positioned as a targeted chesty cough remedy. Its sugar-free formula uses guaifenesin at a dose of 200 mg per 10 ml, which acts as an expectorant. It is suitable for adults and children aged 12 and over. Covonia also offers a 5-in-1 multi-symptom variant that includes a combination of active ingredients for broader symptom coverage.

Benylin dry and tickly cough syrup (Glycerol formula)

Benylin’s Dry and Tickly Cough Syrup relies on glycerol as its primary active agent — a demulcent that forms a protective layer over the throat lining. It does not contain a centrally acting suppressant, making it a milder option suitable for children from age 6. Benylin describes the formulation as using “glycerol and demineralised liquid sugar” to soothe the tickling sensation.

Boots 5-in-1 multi-symptom action cough syrup

Boots own-brand 5-in-1 syrup is a broad-spectrum product that targets dry cough, chesty cough, sore throat, tickly cough, and congestion. It contains a combination of active ingredients including a suppressant and a decongestant. Priced around £4–6, it offers a cost-effective alternative to branded multi-symptom products, but consumers should check the ingredient list carefully to avoid overlapping with other medications.

Is codeine cough syrup still available in the UK?

Why codeine linctus was reclassified

In 2024, the UK’s Medicines and Healthcare products Regulatory Agency (MHRA) reclassified codeine linctus from a pharmacy (P) medicine to a prescription-only medicine (POM). The decision followed concerns over addiction risk, respiratory depression, and abuse potential. The MHRA stated that “codeine linctus is being reclassified to prescription-only due to risk of addiction and respiratory depression.” Any codeine-based cough syrup now requires a doctor’s prescription.

Safer alternatives to codeine cough syrup

For adults who previously used codeine linctus for a persistent dry cough, alternatives include dextromethorphan-based suppressants (e.g., Boots Dry Cough Syrup) or glycerol-based demulcents (e.g., Benylin Dry and Tickly). For chesty coughs, guaifenesin products like Covonia are appropriate. The NHS notes that cough medicines containing codeine “will not stop your cough” and are generally not effective for this purpose.

Where to buy codeine-free cough syrup at Tesco, Boots, Superdrug

All major UK retailers now stock only non-codeine OTC cough syrups. At Tesco, syrups are available at the pharmacy counter or on shelves — no prescription needed for standard formulas. Boots offers its own-brand range alongside Covonia and Benylin. Superdrug sells own-brand chesty and dry cough formulations, often at lower prices. Codeine-containing products have been removed from all retail shelves since the 2024 reclassification.

Where can I buy cough syrup in the UK?

Buying cough syrup at Tesco pharmacy

Tesco stores with a pharmacy counter stock a full range of OTC cough syrups, including own-brand options, Covonia, Benylin, and Boots (in some locations). Non-codeine syrups are available for self-selection on shelves. Tesco also offers online ordering for home delivery or click-and-collect.

Cough syrup at Boots: selection and prices

Boots carries one of the widest selections in the UK, including its own-brand range, Covonia, Benylin, and paediatric options like CalCough. Prices range from approximately £3 for basic own-brand syrups to £6–7 for multi-symptom or branded products. Boots pharmacists are available for consultation during opening hours.

Superdrug own-brand cough medicines

Superdrug sells its own-brand cough syrups, including chesty cough and dry cough formulations, typically priced lower than national brands. The retailer also stocks Covonia and Benylin. Superdrug’s online store provides detailed ingredient lists and usage instructions for each product.

Does hot lemon and honey work better than cough syrup?

NHS recommended home remedies for cough

The NHS explicitly recommends honey and lemon as a safe and effective alternative to OTC cough syrups for children over 1 year and adults. The classic recipe: squeeze half a lemon into boiled water, add 1–2 teaspoons of honey, and drink while warm. For children, the NHS advises 1 teaspoon of honey up to four times a day. This remedy is cited as “comparable to OTC syrups” for symptomatic relief.

When to use cough syrup vs home remedies

For mild coughs associated with common colds, home remedies are often sufficient. Cough syrups may be considered when symptoms are interfering with sleep, work, or daily activities, or when a cough persists beyond a week. The NHS notes that “there’s limited evidence that cough medicines work” and that they “contain ingredients that may help… but they’ll not stop your cough.” For chesty coughs with thick mucus, an expectorant syrup containing guaifenesin may be more effective than honey alone.

Ingredients to look for in chesty cough syrup

For chesty coughs (productive coughs with mucus), look for guaifenesin or carbocisteine as active ingredients. Guaifenesin works by thinning bronchial secretions, making mucus easier to cough up. Carbocisteine alters the chemical structure of mucus to reduce its stickiness. Avoid suppressants like dextromethorphan or pholcodine for chesty coughs, as they prevent the clearing of mucus, which can prolong infection.

How has UK cough syrup regulation changed in recent years?

1. 2022 — MHRA begins review of codeine linctus safety, raising concerns about addiction and respiratory depression.
2. 2023 — Public consultation launched on reclassifying codeine linctus from pharmacy (P) to prescription-only medicine (POM).
3. 2024 — Codeine linctus officially becomes prescription-only in the UK. Retailers remove all codeine-containing cough syrups from shelves.
4. 2024–2025 — Market shifts toward non-codeine alternatives. Honey, glycerol, and plant-based formulations gain prominence.
5. Current (2025) — Boots, Covonia, Benylin, and Superdrug dominate the OTC market with non-codeine formulas. Consumers increasingly seek sugar-free and multi-symptom options.

What is known and what remains uncertain about cough syrups?

What is the broader context of the UK cough syrup market?

The UK cough syrup market is shaped by three forces: retail pharmacy dominance (Boots, Superdrug, Tesco), established brand names (Covonia, Benylin), and the authoritative but product-agnostic guidance of the NHS. The 2024 codeine reclassification marked a turning point, pushing the market decisively toward non-opioid, often plant-based or honey-formulated alternatives. Consumers increasingly look for sugar-free, multi-symptom options, and there is a clear gap for a single resource that combines medical guidance with product comparisons. Retailers provide broad selection but lack medical authority; the NHS provides authoritative guidance but no purchase recommendations. Users must currently consult multiple sources to make an informed choice.

What do official sources say about cough syrups?

“There’s limited evidence that cough medicines work. They contain ingredients that may help… but they’ll not stop your cough.”

— NHS UK

“Codeine linctus is being reclassified to prescription-only due to risk of addiction and respiratory depression.”

— MHRA (2024)

“Cough suppressants are not recommended for children under 6 years.”

— BNF for Children

What should you take away from this guide?

Choosing a cough syrup in the UK in 2025 means matching your specific symptoms — dry, chesty, or multi-symptom — to the right active ingredient while respecting age restrictions and regulatory changes. For children under 6, the NHS advises honey and lemon (over 1 year) or simple comfort measures. For adults, guaifenesin for chesty coughs, dextromethorphan or glycerol for dry coughs, and multi-symptom formulas only when needed. Codeine is no longer available without a prescription. When in doubt, consult a Boots, Superdrug, or Tesco pharmacist, or read the NHS cough information page for further guidance.

Frequently asked questions about cough syrup