Cold-A-Tak contains botanical extracts that have long been used for immune support. One of these extracts is Echinilin®, a clinically studied extract of organic Echinacea purpurea.* Cold-A-Tak also includes organic, wild-crafted oregano oil hand-harvested from the Origanum vulgare plant. Carvacrol and thymol, naturally occurring phenols in oregano oil, are the active compounds that provide immune supporting benefits.* Oregano oil also offers antioxidant protection.* Cold-A-Tak is manufactured without the use of chemicals, using gentle steam-distillation to ensure the purity and concentration of active ingredients from whole herbs.