Marshmallow root, derived from the perennial plant Althaea officinalis, has a long history in traditional herbal medicine, primarily valued for its high mucilage content — a gel-like substance that coats and soothes irritated tissues. Research suggests that this demulcent property may help ease symptoms of acid reflux and heartburn by forming a protective layer along the esophagus and stomach lining. Studies also indicate potential benefits for calming dry coughs and supporting overall gut health, as the mucilage may promote a healthy mucosal barrier in the digestive tract. Some preliminary research has explored its role in urinary tract comfort, though evidence in this area remains limited. Commonly available as Althaea officinalis extract capsules, marshmallow root is generally well-tolerated, but individual responses can vary.
Compare this supplementThese are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Extract | 500–1,000 mg | Three times daily | Acid reflux and heartburn, mucosal protection | Common in clinical and traditional use studies on mucilage-based GI support |
| Extract | 370–610 mg | Daily | Urinary tract health, soothing urinary irritation | Based on standardized marshmallow root extract studies and herbal combination trials |
| Liquid | 2–8 g | Three times daily | Gut health, irritable bowel, mucosal lining support | Traditional and Commission E monograph dosing for root preparations |
| Powder | 5–6 g | Daily | Cough relief and throat soothing | Used in syrup and powder preparations in European phytotherapy research |
| Powder | 2–4 g | Three times daily | General mucous membrane support, dry cough | WHO monograph and European Medicines Agency (EMA) herbal medicine guidelines |