Botanical Overview
Polypodium leucotomos is a fern species belonging to the family Polypodiaceae, native to Central and South America. Commonly known as Calaguala or Polypody fern, its leaves and rhizomes are used medicinally. It is primarily valued for its beneficial effects on the skin and immune system.
Energetics
The energetics of Polypodium leucotomos are generally considered neutral in temperature and moisture, with a bitter taste profile. It is regarded as tonifying in action.
Primary Actions
- Antioxidant
- Photoprotective
- Anti-inflammatory
- Immunomodulatory
Indications
Western
- Photosensitivity
- Skin inflammation
- Eczema
- Psoriasis
Syndromes
- Photodermatoses
- Chronic skin inflammation
TCM
No documented traditional use.
Ayurveda
No documented traditional use.
Unani
No documented traditional use.
Constituents & Mechanisms
This fern contains phenolic compounds, quinic acid derivatives, flavonoids, and polyphenols which contribute to its antioxidant and photoprotective properties.
Dosage & Preparations
- Oral extract capsules: 240 mg daily
- Topical formulations: concentration varies
Safety & Contraindications
Polypodium leucotomos is generally well tolerated; however, caution is advised for patients with known hypersensitivity to ferns. Its safety during pregnancy and lactation has not been established and is therefore not recommended. There are no major drug interactions reported, yet caution should be taken when used concurrently with immunosuppressive drugs.
Astrological Correspondences
No reliable information on planetary or elemental rulers was found.
Selected References
- Polypodium leucotomos: Botanical, Chemical and Pharmacological Review
- Oral Polypodium leucotomos extract decreases signs of photodamage and increases antioxidant enzymes in human skin
- Herbal Medicine: Biomolecular and Clinical Aspects, 2nd edition