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RESPIRATORY SYSTEM › COUGH AND COLD PREPARATIONS › EXPECTORANTS, EXCL. COMBINATIONS WITH COUGH SUPPRESSANTS › Expectorants
altheae radix
R05CA05
Forms & Strengths
- Crude drug (dried root cut or powdered)
- Liquid extract 1:1 (v/m)
- Syrup (containing marshmallow root extract)
- Herbal tea infusions
Adult Dosing
- Crude drug: 0.5-3 g in cold maceration up to several times daily
- Liquid extract: 2-5 mL up to 3 times daily
- Syrup: 5-10 mL up to 3-6 times daily
Pediatric Dosing
- Children 3-6 years: Syrup 2.5-5 mL up to 3 times daily
- Children 6-12 years: Syrup 5 mL up to 3-6 times daily
- Not recommended for children under 3 years without medical supervision
Indications
- Symptomatic treatment of irritative coughs associated with the common cold
- Relief of mild inflammation of the oral and pharyngeal mucosa and associated dryness
Mechanism of Action
- High molecular weight polysaccharides (mucilage) coat the mucous membranes of the oropharynx
- Forms a protective physical barrier against local irritants, soothing mucosal irritation
- Reflex reduction of cough via local pharyngeal protection
Contraindications
- Hypersensitivity to Althaea officinalis or related Malvaceae species
- Presence of rare hereditary fructose intolerance (if specific syrup excipients are used)
Adverse Reactions
- Hypersensitivity reactions (very rare)
- Gastrointestinal upset (exceptionally rare)
Drug Interactions
- Delayed absorption of concomitantly administered oral medications due to mucilage coating
- Recommended to maintain a 1-2 hour time interval between administration of marshmallow root and other oral drugs
Curated Content: Needs Vetting Before Put to Clinical Use