Est. 1973 True Herbs + Herbal Support Dietary Supplement Non GMO Project Verified Lab Verified Vegan A Brighter Way Since 1973, we've scoured the globe for the highest quality ingredients, connecting you with the most efficacious supplements that help you live brighter & embrace the moments that matter most. Discussion: The Marshmallow plant originates in Europe, where is has a long history of use as both a food and a medicine. The use of Marshmallow root as a confection dates back to ancient Egypt, where it was originally mixed with honey. Marshmallow root is high in a soluble fiber known as mucilage, a thick, gelatinous substance. Studies suggest that Marshmallow root may provide nutritive support for a healthy gastrointestinal and respiratory tract.