BioPure offers two types of Calenduala officinalis extract—a tincture made in 70% organic ethanol and purified water, and Liposomal Calendula, a form in which the liquid extract of the herb has been blended with natural sunflower seed lecithin. The lipids in the lecithin have a close affinity to those in our own cell membranes, encouraging a greater degree of absorption and bioavailability of the beneficial effects of the Calendulaextract. In addition, this liposomal delivery system serves to protect the herbal contents from degradation and breakdown from the high acidity and enzymes in the gastrointestinal tract. BioPure’s Liposomal Calendula is suspended in a solution of water, ethanol, glycerin, Vitamin E, phospholipids, and medium-chain triglycerides. Sunflower lecithin is used to avoid soy allergies.