Polypodium Leucotomos
A fern extract that provides powerful antioxidant protection against UV radiation.
Also known as: Calaguala • Fernblock
Overview
Polypodium leucotomos is a tropical fern native to Central and South America. The extract from its leaves is rich in antioxidant compounds, particularly phenolic compounds like ferulic and caffeic acid. It is best known for its photoprotective effects, helping to protect the skin from damage caused by ultraviolet (UV) radiation from the sun. It works by neutralizing free radicals, reducing inflammation, and protecting cellular DNA. It is taken orally as a form of 'internal sunscreen'.
Key Benefits
Protects Skin from UV Damage
It reduces the harmful effects of UVA and UVB radiation, decreasing the risk of sunburn and long-term skin aging.
Preserves Collagen
It inhibits the expression of MMPs (matrix metalloproteinases), enzymes that break down collagen in response to UV exposure.
Reduces Hyperpigmentation
It can help prevent and reduce hyperpigmentation caused by sun exposure.
Dosage & How to Take
240 mg taken 30-60 minutes before sun exposure. For prolonged exposure, a second dose may be taken 2-3 hours later.
| Purpose | Dose | Notes |
|---|---|---|
| Daily Maintenance | 240 mg/day | |
| Intense Sun Exposure | 480 mg/day | Taken in divided doses. |
Best Time to Take
Take 30-60 minutes before going out in the sun.
With or Without Food
Can be taken with or without food.
Forms & Bioavailability
| Form | Absorption | Best For | Notes |
|---|---|---|---|
| Standardized Extract | Good | Photoprotection | Branded extracts like Fernblock have been extensively studied. |
Side Effects & Safety
Common
- Generally well-tolerated.
Rare
- Mild stomach upset in some individuals.
Contraindications
- None known.
Interactions
Scientific Research
Polypodium leucotomos as an Adjunct Treatment for Melasma
Oral administration of P. leucotomos extract was a safe and effective adjunct for treating melasma, a common hyperpigmentation disorder.
Food Sources
Frequently Asked Questions
Medical Disclaimer
This content is for educational and informational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen, especially if you have pre-existing health conditions or are taking medications. The statements on this page have not been evaluated by the Food and Drug Administration.