Marsh comfrey (Comarum palustre), also known as bog bean, marsh cinquefoil, or purple marshlocks, is a perennial semi-shrub belonging to the Rosaceae family. Its long, creeping rhizome can extend up to 3 meters in water and loose peat. The plant features a distinctive curved stem, resembling a saber (hence the name "marsh comfrey"), that grows up to 1 meter tall and has a brownish-red hue. The lower leaves are composed of five to seven leaflets, sometimes resembling fingers, while the upper leaves are trifoliate. Dark red flowers are clustered in racemes and bloom in August. The above-ground parts are harvested in June-July, and the roots in late autumn, before the ground freezes.
Marsh comfrey thrives in low, marshy areas, on the banks of lakes and rivers, in overgrown peat bogs, flooded meadows, swampy forests, and tundra regions. It's widely distributed across Northern and Central Europe, Western and Eastern Siberia, Mongolia, China, Scandinavia, North America, and Japan. Both the rhizomes and leaves are used medicinally.
Used as a healing agent since the 17th century, Laplanders have long consumed marsh comfrey tea to boost energy. Known as a gentle biostimulant, it helps the body adapt to various conditions. Its primary action focuses on removing obstructions in the body's fluid pathways. The stems and leaves contain micronutrients (potassium, copper, magnesium, phosphorus), and vitamin C, while the roots contain carotene, tannins, essential oils, and flavonoids.
Marsh comfrey is widely used in many countries. Traditional Russian medicine uses it in decoctions and tinctures for various ailments including: bleeding, arthritis, arthrosis, osteoarthritis, rheumatism, stomach pain, sciatica, gastrointestinal disorders, influenza, diarrhea, liver diseases, and breast and stomach cancer. A decoction is also recommended for thrombophlebitis, neuralgic pain, tuberculosis, hypotension, jaundice, cholecystitis, and angina. The herb is used for rabies bites, metabolic disorders, and uterine bleeding. Externally, it's used as a mouthwash for toothache and gum inflammation, and crushed fresh herb is applied to suppurating wounds.
Pour 1 tablespoon of crushed herb with 0.5 liters of boiling water, wrap, and let it steep for 1 hour. Strain. Take 0.5 cups 30 minutes before meals, 4 times a day, with the fourth dose taken at bedtime.
Prepare in a 1:10 ratio with 60° alcohol. Let it steep for 14 days. Take 1 tablespoon 3 times a day, 30 minutes before meals, and rub into affected joints.
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