Gigartina Red Marine Algae features the richest source of gigartina available. Gigartina is rich in sulfated polysaccharides, which are substances known to inhibit certain viruses. Sulfated polysaccharides are complex sugars that contain sulfur. Carrageenan and other gel-like substances are members of this family of polysaccharides. Research has isolated and identified a number of sulfated polysaccharides from sea plants that improve immune function. The richest source is what you find in our product, Gigartina skottsbergii. This product is a great addition to any wellness plan and can be especially useful in warding off viral infections during those harsh winter months. Plant sterols in the red marine algae may provide additional immune boosting benefits.