Plant MedicineSea Lettuce
Sea Lettuce
Ulva lactuca
Family: Ulvaceae
At a glance
Best for: Minerals, Antioxidant, Nutritious food
Common forms: Culinary
Evidence level: Traditional-only/Early
Cautions: May accumulate pollutants—source carefully
What it is
Sea lettuce is a bright green alga found in coastal waters worldwide. It has been eaten as a food in many cultures.
Traditional use
Consumed in parts of Europe, Asia, and the Pacific as a food and condiment.
What modern research suggests (Traditional-only/Early)
Rich in chlorophyll, minerals, and protein. Studies show antioxidant, antimicrobial, and potential prebiotic effects.
Safety + interactions
Generally safe as a food. May accumulate heavy metals—source from clean waters.
Community Insights
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Disclaimer: This content is educational and not medical advice. Always consult a qualified healthcare provider before using any herbs or supplements, especially if you are pregnant, nursing, taking medications, or have a medical condition.