Herbal Syrups, Lozenges and Throat Sprays: Label Reading
How to read the label on herbal cough syrups, lozenges and throat sprays, with what EU and UK sources say about evidence, age limits, honey in infants, sugar and alcohol.
Content last updated . This page has not been medically reviewed.
Safety first. Natural products can cause side effects and interact with medicines. Read herbal tea and extract safety before you use anything on this page.
Herbal syrups, lozenges and throat sprays sit between a food and a medicine, and the label can be hard to read. This page covers what the official and medical sources we read say about them: the evidence, age limits, honey, sugar and alcohol. It is information, not advice for any one person. Plain honey, a food, is included because it is often sold with or instead of a herbal syrup. A pharmacist can help with any product, and a cough that is severe, long or accompanied by trouble breathing needs a clinician.
Honey first: not for babies
The NHS says honey can contain bacteria that produce toxins in a baby's intestines, leading to infant botulism, a very serious illness, and advises not giving honey until a child is over 1 year old. [1] The NHS also lists hot lemon and honey as an option for cough in older people, marked not suitable for babies under 1 year old. [2] Because honey is an ingredient in some syrups and lozenges, check the ingredient list for it.
What the evidence shows by product
The table separates traditional use from research and names the plant part and form each source covered.
| Product type | What the source found | Strength of evidence |
|---|---|---|
| Honey for acute cough in children aged 12 months to 18 years (Cochrane review, 2018, 6 trials, 899 children) | Honey probably reduces cough frequency better than no treatment or placebo (moderate certainty); may be similar to dextromethorphan (low certainty). [3] The authors also state there was no strong evidence for or against using honey. [3] | Promising but limited |
| Marshmallow root syrup (Althaea officinalis L., root) | The EMA considered two studies of the syrup in about 900 children with mouth and throat irritation and dry cough; a reduction in coughing was seen but firm conclusions could not be drawn because it was not compared with another treatment. [4] | Traditional use; insufficient trial evidence |
| Thyme herb preparations (Thymus vulgaris L., Thymus zygis L., leaves and flowers) | The EMA concluded use for productive coughs rests on traditional use; a study it described in 60 adults had shortcomings, so firm conclusions could not be drawn. [5] | Traditional use only |
| Pelargonium root liquid extracts (Pelargonium sidoides DC and P. reniforme Curt.) | The EMA considered 3 studies in acute bronchitis against placebo; firm conclusions could not be drawn because of weaknesses in design and outcome. [6] | Traditional use; insufficient trial evidence |
| Herbal throat sprays and herbal lozenges | Proper evidence not found. A PubMed search on 2026-10-23 returned trials of individual named formulas, mostly multi-herb products; we did not assess them, and a result for one formula does not transfer to another. | Proper evidence not found |
The NHS puts the general picture plainly: there is limited evidence that hot lemon and honey and herbal medicines help ease a cough. [2] For anesthetic throat sprays (not herbal), the NHS says there is little proof they help when used on their own. [7]
Age limits stated by the EMA
Age limits in the EMA summaries are one of the most useful label checks:
- Thyme: most preparations only for adults and adolescents over 12 years, a few for children above 4 years. [5]
- Marshmallow root: for mouth or throat irritation and associated dry cough, usually adults, adolescents and children over 3 years; ethanol extracts only in adults. [4]
- Pelargonium root: only from the age of 6 years. [6]
The NHS notes that some cough medicines should not be given to children under 12 years old and suggests asking a pharmacist. [2]
Sugar, alcohol and choking
- Sugar. The WHO counts sugars naturally present in honey and syrups as free sugars, whose intake should be limited. [8] The NHS says children aged 4 or younger should avoid food and drink with added sweeteners or sugar, including the natural sugar in honey and syrup. [1] The sources we read do not give the sugar content of herbal syrups, so the label's nutrition panel is the place to look.
- Alcohol. Some liquid herbal products use ethanol as a solvent; see alcohol in herbal extracts. MedlinePlus tells people taking disulfiram to avoid medicines that contain alcohol such as cough syrup. [9]
- Choking. The NHS says not to give young children anything small and hard to suck, such as hard sweets, because of the choking risk. [7] We did not read a source on herbal lozenges specifically.
Reading the label
Look for the plant's scientific name and plant part, the form (syrup, extract, lozenge), whether honey, sugar or alcohol is listed, any age limit, and any other medicines in the product. See reading an herbal tea or tincture label, herbal tea for sore throat, cough and colds and how interactions work.
Frequently asked questions
Can a baby have a herbal syrup that contains honey?
The NHS says not to give honey to a child under 1 year old because of the risk of infant botulism. [1] Ask a pharmacist or pediatric clinician before any herbal product for a baby.
Do herbal cough syrups work?
For the herbal syrups the EMA reviewed, the conclusions rest on traditional use because the trials could not support firm conclusions. [5] [4] Honey has moderate-certainty evidence in children over 12 months. [3]
Do herbal lozenges and throat sprays have good evidence?
Proper evidence not found for herbal ones in our PubMed search on 2026-10-23. The NHS says there is little proof for anesthetic sprays used alone. [7]
Is it a problem if a syrup contains alcohol?
It can be for some people, for example those taking disulfiram. [9] See the alcohol page and ask a pharmacist.
When should a cough be checked?
The NHS says to see a GP for a cough lasting more than 3 weeks, and to get urgent help if the cough is very bad or you find it hard to breathe. [2] In the US, call 911 for an emergency.
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Risks named in the sources
Thyme medicines must not be used in people allergic to thyme or other plants of the Lamiaceae (Labiatae) family, and stomach problems may occur. [5] For pelargonium root, very rare side effects were reported, including allergic reactions, and liver problems were also reported, with the frequency not known. [6] For liver warning signs to act on, see liver injury warning signs.
References
- NHS (UK). Foods to avoid giving babies and young children. Read 2026-10-23.
- NHS (UK). Cough. Read 2026-10-23.
- Oduwole O, et al. Honey for acute cough in children. Cochrane Database of Systematic Reviews, 2018. Read 2026-10-23.
- European Medicines Agency. Althaeae radix - herbal medicinal product (summary of HMPC conclusions). Summary for the public first published 2016. Read 2026-10-23.
- European Medicines Agency. Thymi herba - herbal medicinal product (summary of HMPC conclusions). Read 2026-10-23.
- European Medicines Agency. Pelargonii radix - herbal medicinal product (summary of HMPC conclusions). Summary for the public first published 2018. Read 2026-10-23.
- NHS (UK). Sore throat. Read 2026-10-23.
- World Health Organization. Healthy diet (fact sheet). Read 2026-10-23.
- MedlinePlus (US National Library of Medicine). Disulfiram. Read 2026-10-23.