Sentinel Echinacea is a dietary supplement containing 100 capsules of Echinacea, an herbal remedy traditionally used to support immune system function. Each capsule contains a standardized extract of Echinacea in an easy-to-swallow form. Echinacea is an herbal supplement derived from the purple coneflower plant. It has been traditionally used to help support immune system health and may help reduce the duration and severity of cold symptoms when taken at the first sign of illness. The supplement comes in an amber glass bottle with a safety seal to protect the contents. As with any supplement, consult with a healthcare provider before use, especially if pregnant, nursing, or taking other medications.