Prospan (Ivy Leaf Extract Cough Syrup)

What Is Prospan and What Is It Used For?

Quick Answer: Prospan is a herbal cough syrup containing a standardized dry extract of ivy leaves (Hedera helix). It is used to thin and loosen thick bronchial mucus in productive cough, common colds, acute bronchitis, and chronic inflammatory bronchial conditions. It is an over-the-counter medicine for adults, adolescents, and children.

Prospan is a traditional herbal medicinal product manufactured by Engelhard Arzneimittel (Germany), first introduced in 1950 and today available in more than 100 countries worldwide. Its active constituent is a dry extract of ivy leaves (Hedera helix L., folium) with the internal designation EA 575, produced with a drug-extract ratio of 5–7.5:1 using ethanol 30% (m/m) as the extraction solvent. The active extract is standardized to ensure a consistent content of bioactive triterpene saponins, which are responsible for the clinical effects.

Clinically, Prospan belongs to the class of herbal expectorants (ATC code R05CP02). It acts primarily as a secretolytic agent — meaning it reduces the viscosity of tenacious bronchial mucus — while also exerting a bronchospasmolytic effect that gently relaxes constricted airway smooth muscle. The combined result is easier expectoration of mucus and improved airway clearance, which can relieve the feeling of chest congestion and reduce the work of coughing.

The recognized indications for Prospan, aligned with the European Medicines Agency’s Herbal Medicinal Products Committee (EMA/HMPC) community herbal monograph on Hedera helix folium, include the symptomatic treatment of cough associated with acute upper respiratory tract infections (such as the common cold), acute bronchitis, and — as an adjunct to medical therapy — chronic inflammatory bronchial diseases, including conditions with productive cough such as chronic bronchitis and mild-to-moderate chronic obstructive pulmonary disease (COPD). Prospan is not intended for the treatment of dry, non-productive cough, for which antitussives are more appropriate.

The clinical evidence supporting ivy leaf extract is substantial for a herbal product. A systematic review and meta-analysis by Holzinger and Chenot (2011) identified multiple prospective studies involving more than 65,000 patients, including over 50,000 children, and concluded that ivy leaf extract preparations improve respiratory function parameters and cough symptoms with a favorable safety profile. Subsequent randomized controlled trials, such as those by Schmidt et al. (2012) and Kraft et al. (2018), have confirmed improvements in cough severity, mucus viscosity, and quality-of-life scores compared with placebo or untreated controls.

Prospan is widely used in pediatric practice because of its favorable tolerability profile and palatability. Large-scale post-marketing surveillance, including observational studies of more than 52,000 pediatric patients, has confirmed its safety in children from the age of 1 year upwards. Regulatory labeling in several European markets allows use in infants from 2 years of age without restriction and in younger children after medical advice, making it one of the few cough medicines with a broad pediatric indication.

What Should You Know Before Taking Prospan?

Quick Answer: Do not take Prospan if you are hypersensitive to ivy (Hedera helix) or other plants of the Araliaceae family, or if you have hereditary fructose intolerance. Seek medical advice if symptoms persist beyond one week, worsen, or are accompanied by high fever, shortness of breath, or blood-streaked sputum.

Contraindications

Prospan must not be taken if you have a known hypersensitivity (allergy) to ivy leaves, to any of the components of Hedera helix, or to other plants of the Araliaceae family, such as ginseng (Panax ginseng) or Chinese angelica. Previous episodes of rash, itching, facial swelling, or breathing difficulty after exposure to ivy or related plant products should be disclosed to your doctor or pharmacist, and Prospan should be avoided.

Prospan Cough Syrup contains sorbitol as a sweetener. Accordingly, patients with hereditary fructose intolerance — a rare inherited metabolic disorder — must not take this medicine, as sorbitol is metabolized to fructose and can cause serious adverse reactions, including hypoglycemia and liver dysfunction, in affected individuals. Because hereditary fructose intolerance is usually diagnosed in early childhood, parents and caregivers should ensure that any diagnosed child is not given sorbitol-containing preparations.

Prospan is not recommended in infants under 1 year of age without explicit medical advice, as productive cough in very young children may reflect a more serious underlying condition requiring different management. Dedicated pediatric assessment is advised before use in this age group.

Warnings and Precautions

Several practical precautions should be observed before and during treatment with Prospan. The following groups and scenarios require particular attention:

• Persistent or worsening symptoms: If cough persists for more than 1 week, worsens during treatment, or is accompanied by fever above 39°C, shortness of breath, purulent or blood-streaked sputum, or chest pain, discontinue self-treatment and consult a healthcare provider. These features may indicate a bacterial infection, pneumonia, asthma exacerbation, or another serious condition requiring medical evaluation.
• Asthma and reactive airway disease: Although ivy leaf extract has a mild bronchospasmolytic effect and is often well tolerated in patients with asthma, any new-onset wheezing or shortness of breath during treatment should be evaluated, and the medicine discontinued if bronchospasm is suspected.
• Gastritis and gastric ulcer: Patients with known gastritis or peptic ulcer disease should use Prospan with caution, as the product may occasionally cause mild gastrointestinal irritation. Taking it with food may help minimize this.
• Pediatric use: In children aged 2–5 years, medical consultation is recommended before starting treatment. In children under 2 years, Prospan should not be used without a physician’s assessment due to the risk of worsening respiratory symptoms if the underlying diagnosis is not clear.
• Diabetes: Prospan Cough Syrup is sugar-free; each 5 mL dose corresponds to approximately 0.08 bread units (BU) and does not have a clinically significant effect on blood glucose. Nevertheless, as with any medicine, patients with diabetes should continue routine glucose monitoring.
• Fructose and sorbitol sensitivity: Besides hereditary fructose intolerance (a contraindication), patients with milder dietary fructose or sorbitol sensitivity may experience gastrointestinal discomfort such as bloating or loose stools, especially at higher doses.

Pregnancy and Breastfeeding

Clinical data on the safety of ivy leaf extract during pregnancy and breastfeeding are insufficient. Although ivy leaf has a long history of traditional use, no adequately powered controlled studies have been conducted to establish safety for the fetus or nursing infant. According to the EMA/HMPC community herbal monograph on Hedera helix folium, the use of ivy leaf extract during pregnancy and lactation is not recommended in the absence of sufficient data.

If you are pregnant, think you may be pregnant, are planning pregnancy, or are breastfeeding, always consult your doctor, midwife, or pharmacist before using Prospan. Non-pharmacological measures such as adequate hydration, warm drinks, honey (in non-infants), and steam inhalation may provide sufficient relief for mild cough associated with a common cold during pregnancy. Where pharmacological treatment is considered essential, the attending physician will weigh potential benefits against theoretical risks.

Driving and Operating Machinery

Prospan is not known to impair alertness, reaction time, or psychomotor performance. At recommended doses, treatment with Prospan does not affect your ability to drive vehicles or operate machinery. However, individual sensitivity varies. If you experience unusual drowsiness, dizziness, or other unexpected effects, exercise caution when driving or performing tasks that require full concentration until you know how the medicine affects you.

Important Information About Excipients

Prospan Cough Syrup contains sorbitol (liquid, non-crystallizing), sodium citrate, citric acid, potassium sorbate (preservative), xanthan gum (thickener), natural cherry flavor, and purified water. It is alcohol-free, sugar-free, dye-free, and gluten-free in most markets. Always check the carton leaflet for the complete list of excipients applicable to your specific product, as formulations may vary slightly between countries.

How Does Prospan Interact with Other Drugs?

Quick Answer: No clinically significant drug interactions have been established for ivy leaf extract. The main consideration is to avoid concurrent use with cough suppressants (antitussives) such as codeine or dextromethorphan, as suppressing the cough reflex while simultaneously loosening mucus may lead to accumulation of secretions in the airways.

Ivy leaf extract is considered to have a low interaction potential. Its principal bioactive compounds — the triterpene saponins hederacoside C and α-hederin — exert their effect on respiratory epithelial cells via modulation of beta-2 adrenergic signaling and glucocorticoid receptor activity at the cellular level, rather than through systemic absorption of pharmacologically active metabolites in significant quantities. As a result, classical pharmacokinetic interactions mediated through cytochrome P450 enzymes or plasma-protein binding have not been documented in the clinical literature.

Clinically Relevant Interactions

Additional Considerations

The most important practical interaction to be aware of is the combination of Prospan with cough suppressants (antitussives). Prospan is designed to liquefy thick mucus so that it can be coughed up more easily, whereas antitussives such as codeine, pholcodine, or dextromethorphan suppress the cough reflex at the central nervous system level. Combining these two classes can lead to accumulation of thinned mucus in the airways, which may cause a feeling of chest congestion and — in vulnerable patients — increase the risk of secondary infection. If both symptomatic treatments appear necessary (for example, productive cough during the day and a dry, sleep-disrupting cough at night), consult a pharmacist or physician about appropriate timing.

Prospan is frequently used alongside inhaled bronchodilators and inhaled corticosteroids in patients with asthma or COPD who develop an acute chest infection with productive cough. No adverse interactions have been reported in this setting. Some preclinical data suggest that α-hederin, the active metabolite of hederacoside C, modulates the responsiveness of beta-2 adrenergic receptors and may even sensitize them, potentially improving the effectiveness of inhaled beta-2 agonists. This pharmacological interplay is of theoretical rather than practical clinical importance.

Simultaneous use of Prospan with oral antibiotics (such as penicillins, cephalosporins, or macrolides) has not been associated with any clinically relevant interaction. In bacterial lower respiratory infections with productive cough, antibiotics and Prospan are often prescribed together without adverse effects. Patients should, however, always inform their doctor or pharmacist about all medicines they are taking — including over-the-counter products, herbal remedies, and dietary supplements — so that individual risk can be assessed.

What Is the Correct Dosage of Prospan?

Quick Answer: For adults and adolescents aged 12 years and over, the usual dose of Prospan Cough Syrup is 5–7.5 mL three times daily. Children aged 6–12 years take 5 mL three times daily; children aged 1–5 years take 2.5 mL three times daily. Shake the bottle before use and measure the dose with the supplied measuring cup or oral syringe.

The dosage of Prospan depends on age and body weight, as well as on the specific product formulation (standard cough syrup, forte syrup, or other presentations available in certain markets). Always follow the dosing instructions in the package leaflet or those provided by your healthcare provider. The doses described below correspond to the most widely marketed product — Prospan Cough Syrup 7 mg/mL oral solution (35 mg ivy leaf dry extract per 5 mL).

Adults and Adolescents (12 Years and Older)

Children

Elderly Patients

No dose adjustment is required for elderly patients based on age alone. However, older adults are more likely to be taking several medications concurrently and to have comorbidities such as heart failure, kidney impairment, or chronic respiratory disease. Persistent cough in the elderly should always be investigated to exclude specific causes (such as gastro-esophageal reflux, ACE-inhibitor-induced cough, heart failure, or malignancy) before prolonged symptomatic treatment.

How to Take Prospan

Shake the bottle well before each use to ensure even distribution of the extract. Use only the measuring device supplied with the product — household spoons can vary widely in volume and lead to under- or over-dosing, particularly in children. After use, wipe the bottle opening and close the cap tightly. Store the open bottle upright and use within the period specified on the packaging (typically 3 months after first opening).

Prospan can be taken with or without food. Taking it with or immediately after a meal may help reduce the unlikely event of mild gastrointestinal discomfort. Drinking plenty of water alongside treatment supports the expectorant effect, because adequate systemic hydration further reduces mucus viscosity.

Missed Dose

If you forget to take a dose of Prospan, take it as soon as you remember — unless it is almost time for your next scheduled dose. In that case, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a forgotten one. If you have any questions about missed doses, contact your pharmacist.

Overdose

What Are the Side Effects of Prospan?

Quick Answer: Prospan is generally very well tolerated. The most commonly reported side effects are mild gastrointestinal symptoms (nausea, vomiting, diarrhea), which occur in up to 1 in 100 users. Allergic reactions such as urticaria, skin rash, or dyspnea are rare, and serious reactions like angioedema are very rare but require urgent medical attention.

Like all medicines, Prospan can cause side effects, although not everybody gets them. The saponin-rich ivy leaf extract has a long-standing record of good tolerability in both adult and pediatric patients. Large post-marketing surveillance studies, including observational cohorts of more than 50,000 children, have reported adverse event rates of less than 2%, with the vast majority of events being mild, transient, and self-limiting.

The gastrointestinal side effects (nausea, vomiting, diarrhea, and mild abdominal discomfort) appear to be dose-related and most commonly occur at higher doses or in individuals with fructose or sorbitol sensitivity. They are generally mild, self-limiting, and resolve on continued use or dose reduction. Taking the medicine with food may reduce their occurrence. Persistent or severe gastrointestinal symptoms should prompt a review of the dose and consideration of an alternative treatment.

Allergic skin reactions, including rash, itching, and hives, have been reported rarely and are usually associated with undiagnosed hypersensitivity to ivy or other Araliaceae plants. If any cutaneous reaction develops during treatment, discontinue the medicine and consult a healthcare provider. Patch testing by a dermatologist or allergist can confirm or exclude specific contact or type-I hypersensitivity to Hedera helix.

Serious systemic hypersensitivity reactions, including angioedema of the face, lips, and upper airway, and severe dyspnea, are very rare but have been documented in post-marketing reports. In patients with a history of multiple drug or plant allergies, especially polysensitization to Araliaceae family plants (such as ginseng), an individualized risk-benefit assessment is warranted before treatment.

Reporting Side Effects

If you experience any side effects, including any not listed above, talk to your doctor or pharmacist. You can also report suspected adverse reactions directly to your national pharmacovigilance authority — for example, the MHRA Yellow Card Scheme in the United Kingdom, the FDA MedWatch program in the United States, or the respective national agency in your country. Reporting adverse reactions helps build a more complete safety profile of this and other medicines and benefits all patients.

How Should You Store Prospan?

Quick Answer: Store Prospan Cough Syrup at or below 25°C (77°F) in its original carton, with the bottle tightly closed. Once opened, use within 3 months. Do not freeze. Keep out of the sight and reach of children.

Correct storage of Prospan is essential to preserve its potency, safety, and palatability throughout the shelf life. Ivy leaf extract is stable when protected from heat, light, and extreme humidity, but the aqueous oral solution has a more limited shelf life than solid dosage forms and requires attention once the bottle has been opened.

• Storage temperature: Store at or below 25°C (77°F). Do not freeze. Do not refrigerate, as cold temperatures may cause transient clouding or precipitation of extract components, although this typically does not affect efficacy once shaken.
• Original packaging: Keep the bottle in its original carton to protect the solution from light. Keep the bottle tightly closed after each use to prevent evaporation and microbial contamination.
• In-use shelf life: Once opened, Prospan Cough Syrup should generally be used within 3 months, or as specified on the package leaflet for your particular market.
• Expiry date: Do not use after the expiry date (“EXP”) printed on the carton and bottle. The expiry date refers to the last day of the stated month.
• Child safety: Keep Prospan out of the sight and reach of children. Cough syrups are often palatable (Prospan has a pleasant cherry or similar fruit flavor) and may be attractive to children, increasing the risk of accidental over-consumption.

Do not dispose of medicines via wastewater or household refuse. Ask your pharmacist how to dispose of medicines you no longer use. Proper disposal helps protect the environment and prevents accidental ingestion or misuse by others.

What Does Prospan Contain?

Quick Answer: Each 5 mL of Prospan Cough Syrup contains 35 mg of standardized dry ivy leaf extract (EA 575, Hedera helix L., folium, DER 5–7.5:1, extracted with ethanol 30% m/m) as the active ingredient. Excipients include sorbitol (liquid, non-crystallizing), potassium sorbate, citric acid, xanthan gum, natural cherry flavor, and purified water.

Understanding the composition of your medicine is important, particularly if you have known allergies, intolerances, or dietary restrictions. The following section details the active and inactive ingredients of Prospan Cough Syrup. Other Prospan preparations (such as Prospan Forte Syrup, cough liquid sachets, effervescent tablets, or lozenges, where available) may have slightly different excipient compositions — always check the package leaflet of the specific product.

Active Substance

The active pharmaceutical ingredient is a dry extract of ivy leaves (Hedera helix L., folium), bearing the internal designation EA 575. The extract is produced according to pharmacopoeial standards with a drug-extract ratio (DER) of 5–7.5:1, using ethanol 30% (m/m) as the extraction solvent. Each 5 mL dose contains 35 mg of this dry extract, equivalent to approximately 175–262 mg of the original ivy leaf starting material. The extract is standardized to a defined content of hederacoside C to ensure batch-to-batch consistency.

Key bioactive compounds in ivy leaf extract include the triterpene saponins hederacoside C, α-hederin, and hederagenin, as well as flavonoids such as rutin and kaempferol glycosides. Hederacoside C is considered the lead marker substance; it is hydrolyzed in the gut and by airway epithelial cells to α-hederin, which is regarded as the pharmacologically active metabolite responsible for the modulation of beta-2 adrenergic receptor internalization and the resulting secretolytic and bronchospasmolytic effects.

Inactive Ingredients (Excipients)

The excipients in Prospan Cough Syrup serve various pharmaceutical functions — solubilization, preservation, viscosity adjustment, taste masking, and physical stability:

• Sorbitol, liquid (non-crystallizing) — sweetener and viscosity agent (relevant for patients with hereditary fructose intolerance)
• Potassium sorbate — preservative, prevents microbial growth after opening
• Anhydrous citric acid — pH buffer and flavor enhancer
• Xanthan gum — thickening agent, provides a pleasant mouthfeel and ensures uniform distribution of the extract
• Cherry flavor (natural) — taste masking and palatability enhancement
• Purified water — solvent base

Product Appearance

Prospan Cough Syrup is a clear to slightly opalescent, brownish oral solution with a characteristic cherry or fruit aroma, depending on the market. It is supplied in an amber glass or plastic bottle with a child-resistant cap and a calibrated measuring device (cup or oral syringe). Bottle sizes typically available include 100 mL and 200 mL, although other sizes may be offered in specific countries.