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Sea Lettuce
Ingredient Library

Sea Lettuce

Ulva lactuca — Green Algae

Sea Lettuce is a bright green sea vegetable that grows in shallow coastal waters and tidal zones across the world — from the North Atlantic and North Pacific to the Mediterranean, the Caribbean, and beyond. Its vivid green color is the visual signature of its high chlorophyll content, and it has been consumed as a food source in coastal communities across Asia, Europe, and the Americas for centuries.

Sea Lettuce is the only green algae in our seaweed blend, and its inclusion is deliberate. It contributes a distinct nutritional profile — particularly its Vitamin C content, iron levels, and antioxidant polyphenols — that the brown and red algae in our blend cannot replicate. It is the bright nutritional counterpart to the mineral-dense, fucoidan-rich brown seaweeds in our formula.

What It's Known For

High Vitamin C Content

Sea Lettuce is known for its exceptionally high Vitamin C content relative to other sea vegetables. Research shows Vitamin C is essential for collagen synthesis — the process by which the body produces and maintains the structural protein that determines skin elasticity, joint integrity, and connective tissue strength. Studies show Vitamin C also supports immune function by promoting white blood cell production and activity, supports iron absorption from plant-based sources, supports adrenal function during stress, and acts as a powerful antioxidant protecting cells from free radical damage. The Vitamin C in sea lettuce works synergistically with the iron in dulse within our seaweed blend — Vitamin C is known to dramatically enhance the absorption of plant-based iron.

Iron Support

Sea Lettuce is a meaningful source of iron — the mineral essential for hemoglobin production, oxygen delivery throughout the body, immune cell function, and energy metabolism. Research shows iron deficiency is the most widespread nutritional deficiency worldwide and is a leading cause of fatigue, poor concentration, weakened immunity, and reduced physical endurance. The combination of iron from sea lettuce and iron from dulse in our seaweed blend, alongside sea lettuce's natural Vitamin C to enhance absorption, creates a particularly bioavailable whole-food iron complex.

Chlorophyll and Natural Detoxification Support

Sea Lettuce's characteristic bright green color comes from its high chlorophyll content. Research supports chlorophyll for its role in supporting the body's natural detoxification pathways. Studies show chlorophyll binds to certain environmental toxins and carcinogens in the digestive tract, supporting their elimination before absorption. Chlorophyll is also known for its deodorizing properties and its role in supporting healthy blood production through its structural similarity to hemoglobin.

Antioxidant Protection

Sea Lettuce is rich in polyphenol antioxidants that research supports for protecting cells from oxidative stress — the free radical damage associated with aging, chronic inflammation, and environmental toxin exposure. Studies show sea lettuce antioxidants support a healthy inflammatory response and contribute to the overall antioxidant capacity of our seaweed blend.

Adrenal and Hormone Support

Research shows Vitamin C is essential for adrenal gland function — the adrenal glands require more Vitamin C than virtually any other organ in the body, using it to produce cortisol and other adrenal hormones during stress. Studies also link Vitamin C to progesterone production in women — making sea lettuce a particularly relevant ingredient for hormonal support.

Mineral Support

Beyond iron and Vitamin C, sea lettuce provides calcium, magnesium, potassium, and a spectrum of trace minerals in whole-food form. It also provides natural beta-carotene — a precursor to Vitamin A that research shows supports skin health, immune function, and vision.

Traditional Use

Sea Lettuce has been consumed across coastal communities worldwide for centuries. In Japan and Korea it is used in salads, soups, and as a garnish. In Wales and Ireland it has been eaten fresh from the shore as a snack and incorporated into traditional dishes. In Hawaii, a related Ulva species is used in traditional cuisine. Along the Pacific and Atlantic coasts of North America, indigenous coastal communities included sea lettuce in their traditional diet as a readily available and nutritious food source.

This information is educational and reflects traditional use and general nutritional research. These statements have not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease, and does not replace advice from a qualified healthcare provider.

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