Lichen Oil

Fatty-acidOmega-3Best with a meal

What is it

Lichen oil (most commonly from Cladonia rangiferina or related species, marketed as Vitashine) is an oil-based ingredient used primarily as a vegan source of vitamin D3 (cholecalciferol). The vitamin D content is produced when the lichen biomass is UV-exposed.

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

Vitamin D supplementation (vegan-friendly D3)

Strong Evidence

Vitamin D3 from lichen sources has been shown to raise serum 25(OH)D equivalently to lanolin-derived D3, providing the first practical vegan D3 option.

How it works

Lichens synthesize ergosterol, which when exposed to UV light can be converted to vitamin D2, but commercial 'lichen oil' vitamin D3 is produced via a process that yields cholecalciferol (D3) rather than ergocalciferol (D2). This is significant because most vegan vitamin D sources provide D2; lichen-derived D3 fills the gap for vegan D3 supplementation. The vitamin D3 from lichen functions identically to D3 from animal sources (wool lanolin, fish), binding the vitamin D receptor to regulate calcium absorption, bone health, immune function, and many other processes.

Dosage

Vitamin D RDA: 600 IU/day (15 mcg) for ages 1-70, 800 IU/day (20 mcg) for >70. Common supplement doses: 1000-5000 IU/day depending on need and blood levels.

When and how to take it

WHEN: With a meal containing fat for best absorption. Time of day does not significantly affect efficacy. HOW: Drops, softgels, or chewables.

2 commercial forms

Compare the main delivery options and what they’re best suited for.

Vitashine D3 (lichen-derived)

Vegan, kosher, halal options available.

Equivalent to other D3 forms

Lichen oil powder

Used in capsules, tablets, gummies.

Convenient for powder formulations

Safety

Lichen-derived vitamin D3 has equivalent safety profile to other D3 sources. Excessive intake (>4000 IU/day chronically) can cause hypercalcemia, kidney stones, and other toxicity. The lichen oil base contains minimal allergenic or toxic components.

Who should be cautious

Test serum 25(OH)D levels before high-dose supplementation. People with hypercalcemia, kidney stones, sarcoidosis, or other granulomatous diseases should avoid high doses. Pregnancy and lactation: stay within RDA unless directed by clinician.

Interactions

Vitamin D interacts with thiazide diuretics (hypercalcemia risk), digoxin, calcium channel blockers, and may affect levothyroxine absorption. Phenobarbital, phenytoin, and corticosteroids may reduce vitamin D activity.

Frequently asked questions

Is lichen-derived D3 as good as fish-derived D3?⌄

Yes. Both are cholecalciferol (D3) and have been shown to raise serum vitamin D levels equivalently.

Is lichen sustainable?⌄

Commercial lichen is typically harvested in regulated, sustainable manners or grown for the purpose. Check product certifications.

References

Lichen Oil on NIH DSLD (US supplement label database) — NIH Dietary Supplement Label Database link

Research on Lichen Oil (PubMed search) — PubMed link

Track Lichen Oil with Pilora

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Evidence-based·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.