Botanical illustration of ivy leaves.

Ivy Leaf: Cough Evidence, Traditional Uses and Safety

Posted on: Edited on: ~10 min read

What is ivy leaf?

Ivy-leaf medicines contain an extract of Hedera helix, the climbing plant commonly called ivy. The leaf is used in manufactured syrups, drops and other oral preparations for cough. A particular extract, EA 575, has short-course trials in adults with acute cough or bronchitis. Those trials measured symptoms; they did not show that ivy eliminates the infection causing them.

Ivy also has a history of external use for painful joints and skin complaints. Modern studies of gels and creams are a separate evidence base, with different ingredients and routes of use. Garden leaves, berries and homemade preparations are not substitutes for a medicine with identified composition and oral directions.

Traditional ivy uses and today's preparations

The EMA's historical assessment describes a broader range of uses than today's cough syrups. European accounts include respiratory complaints and external applications for rheumatic pain and skin problems. Its cited ethnobotanical account from Abruzzo, Italy, records leaf applications for ringworm, scabies and boils; French traditional-use guidance also listed topical preparations for soothing itchy or irritated skin. These are documented historical practices, not instructions for treating those conditions today. [1]

The continuity is clearest for respiratory use: modern medicines use specified leaf extracts as expectorants. Joint, wound and cosmetic uses have also reached human studies, but the preparations differ. Some contain several active ingredients, so the results cannot identify what ivy contributed.

Why do people take ivy leaf?

Claimed benefit Dose / form studied Research verdict Evidence strength
Reduce acute cough symptoms in adults EA 575, 105 mg/day for seven days The adult trial found better bronchitis symptom scores than placebo. Limited
Improve mucus clearance Specified medicinal ivy-leaf extracts; not all are EA 575 European guidance[2] recognizes expectorant use: helping bring up phlegm. This is a guidance statement, not a measured size of benefit. Not rated — guidance
Treat the underlying infection No established ivy regimen Symptom relief does not establish elimination of a virus or bacteria. Insufficient
Support asthma treatment Ivy dry extract added to inhaled corticosteroids in a small childhood trial The main lung-function comparisons were negative. Review pending
Relieve joint pain A 1% topical gel alongside celecoxib One knee-arthritis trial reported less pain than placebo; this was not an oral supplement. Review pending
Improve wounds or cellulite Multiingredient creams or gels containing ivy Studies tested the complete mixtures, so the ivy contribution is unknown. Review pending

Product directions and measuring a serving

Follow the exact product's age-specific directions and use its measuring device. A kitchen spoon is a poor way to measure a medicinal liquid. Syrups can have different concentrations, so the measured volume is not interchangeable between products.

The European monograph covers several extracts with different manufacturing specifications and age-specific amounts. An adult study dose is not a child's dose. For a child aged two to four with persistent or recurrent cough, the monograph calls for a medical diagnosis before treatment. Ivy cough medicines are contraindicated under age two. [3]

What should the label tell you?

Check the leaf species, named extract, extract mass per measured volume, minimum age and daily serving. For drops, also check alcohol content. For syrups, note sugars, sugar alcohols and other ingredients that may affect tolerability.

Keep combination ingredients visible. If a product also contains thyme or another cough ingredient, its effects cannot automatically be attributed to ivy alone. A knee gel or cosmetic cream has different directions and should not be swallowed.

Drawbacks and side effects

Potential drawback When/who it affects Research evidence Practical implication
Nausea, vomiting or diarrhea Users of oral ivy medicines Recognized medicinal adverse effects; frequency unknown Stop and reassess if symptoms develop.
Allergy Susceptible users Rash, hives, breathlessness and anaphylaxis are reported Swelling or breathing difficulty needs urgent care.
Worsening respiratory symptoms Children under two European contraindication Do not give ivy cough medicines to this age group.
Contact dermatitis People touching ivy or reacting to a skin preparation Plant-contact allergy is documented Avoid further contact if a rash develops; seek assessment for persistent or severe reactions.
Delayed assessment Persistent cough or concerning symptoms Symptom treatment cannot identify the cause Severe or sudden breathing difficulty needs urgent care. Contact a clinician promptly for blood in sputum, fever or worsening illness.

The EMA monograph[3] also advises caution with gastritis or a stomach ulcer. It does not recommend medicinal use during pregnancy or breastfeeding because safety information is insufficient. If cough symptoms persist beyond a week while using the medicine, contact a clinician or pharmacist rather than extending the course automatically.

Contact allergy and swallowed ivy are different risks

Skin contact can cause both irritation and allergic dermatitis. In one published case, a gardener's history and a positive patch test supported an allergy to Hedera helix. That case establishes a possible reaction, not how often it happens. [4]

The Hong Kong Hospital Authority's toxicology atlas[5] lists ivy leaves and fruit as poisonous: swallowing them can cause nausea, vomiting, diarrhea and abdominal pain. Separately, the EMA assessment[1] describes gastrointestinal symptoms and agitation after medicinal overdose, including an accidental child ingestion. Keep medicines away from children and do not make a home remedy from garden ivy.

What does the cough research show?

One named extract improved adult symptom scores

The 2019 trial randomized 209 adults with recent acute bronchitis to EA 575 or matching placebo. The tested liquid supplied 105 mg daily, either as 5 mL three times daily or 7.5 mL twice daily, for seven days. It excluded people with chronic lung disease or allergic asthma. [6]

Its main measure was a bronchitis score combining cough, sputum, chest sounds, chest pain and breathlessness, each scored from zero to four. The total runs from zero to 20, with lower scores better. Average scores fell from 11.8 in both groups to 3.2 with ivy and 5.1 with placebo at day seven: a 1.9-point advantage for the extract. Both groups improved substantially, and an established threshold for a patient-important change on this scale was lacking. The day-two difference on this particular score was not statistically clear.

An earlier trial treated 181 adults for acute cough. Its published abstract reports better cough-severity and other symptom scores with EA 575 than placebo after a week's treatment, but does not give the numerical size of its main cough-scale result. [7]

A later analysis combined these same two trials, totaling 390 people. It estimated a 2.4-point greater fall in the bronchitis score at day seven with EA 575. This is a reanalysis of those participants, not a third independent trial. The manufacturer supported the trials and the combined analysis. [8]

Across the two trials, at least one adverse event was recorded in 30 of 228 participants taking the extract and 25 of 162 taking placebo, with none classified as serious or severe.

Why broader reviews sound more cautious

A 2021 systematic review included 11 studies with different ivy products, combination herbs, ages and designs. Its authors judged the likely cough improvement small and its clinical importance uncertain. The two ivy-only placebo trials were the same adult EA 575 studies described above. [9]

NICE's acute-cough review[10] discusses a broader group of ivy, primrose and thyme preparations. It reports a favorable cough result but calls the evidence very low quality and makes no recommendation to use those herbs. The review it cites searched through March 2012, before the two EA 575 trials. This is a different evidence set, rather than a failed replication of the later extract-specific trials.

Does ivy help asthma or open the airways?

An expectorant helps bring up phlegm. Claims that ivy directly thins mucus or relaxes the airways go further than that description. Cell experiments with alpha-hederin, an ivy constituent, found effects on receptor signaling involved in airway relaxation. [11]

The relevant asthma trial enrolled 30 children with partly controlled or uncontrolled mild persistent allergic asthma despite inhaled corticosteroid treatment. They received ivy dry extract, 70 mg daily for four weeks, and placebo in separate periods, with a four-week break between the study syrups. Their inhaled treatment continued. Twenty-nine completed the trial. [12]

The two main lung-function comparisons found no treatment benefit. Selected breathing measurements improved during the ivy period, but the paper's Results section did not find significant differences between treatments for those secondary changes. The authors still suggested possible benefit and called for further research.

Topical ivy for joints, wounds and cellulite

Knee pain: a gel used with another treatment

One randomized trial assigned 150 people with knee osteoarthritis to a 1% ivy gel, 1% diclofenac gel or placebo gel for six weeks. All groups also received celecoxib, a medicine that reduces arthritis pain and inflammation. The published abstract reports less pain with ivy than placebo, and better stiffness and function with both active gels than placebo. The pain difference between ivy and diclofenac was not statistically significant. [13]

The abstract does not give the absolute size of the pain change. Full treatment and safety details need further review. This provides an initial finding for a topical gel used alongside medicine, not evidence that swallowing ivy treats arthritis.

Wounds: the studied cream contained several ingredients

A controlled study of 80 people with venous leg ulcers compared compression alone with compression plus Idrastin cream. The authors reported better healing and other outcomes with the cream. It contained ivy alongside several other plant ingredients, allantoin and hyaluronic acid, and their explanation assigned different proposed roles to different ingredients. There was no ivy-only treatment group. [14]

The original abstract gives only a limited account of the comparison. It cannot show that ivy itself heals wounds.

Cellulite: a positive result for a cosmetic mixture

A 12-week trial randomized 44 women to a multiactive gel or the same gel base without the active ingredients; 40 completed it. The gel included ivy extract, caffeine, retinol and numerous other ingredients. Twice-daily application improved assessed cellulite appearance compared with the gel base. The manufacturer funded the study, and several authors had company ties. [15]

The study supports a finding about that complete cosmetic formulation. It cannot tell you whether ivy was necessary for the effect, whether an ivy-only cream would do the same, or whether taking ivy orally changes cellulite.

The bottom line

Ivy leaf has limited evidence for easing short-term cough symptoms in adults using a specified extract. Check the concentration and age directions, and seek assessment when cough persists or worsens. Its traditional uses extend to joints and skin, but the modern evidence involves small or incompletely assessed studies and very different topical preparations. The asthma trial's main comparisons were negative, and positive findings for multiingredient creams cannot be assigned to ivy alone.

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References

  1. EMA assessment, historical-use section ↩
  2. EMA: ivy-leaf medicinal preparations and original assessment documents ↩
  3. EMA monograph ↩
  4. Ozdemir 2003 ↩
  5. Hospital Authority: Hedera helix toxicology ↩
  6. Schaefer 2019 adult placebo-controlled trial ↩
  7. Schaefer 2016 adult trial abstract ↩
  8. Völp 2022 individual-patient-data analysis ↩
  9. Sierocinski 2021 systematic review ↩
  10. NICE: acute-cough evidence ↩
  11. Sieben 2009 ↩
  12. Zeil 2014 childhood asthma trial ↩
  13. Dehghan 2020 topical knee trial ↩
  14. Chiummariello 2009 venous-ulcer cream study ↩
  15. Dupont 2014 cosmetic-gel trial ↩