Essentialzymes-4 is a multispectral enzyme complex that combines premium essential oils, herbal ingredients, and specially selected enzymes to help you meet your nutritional and wellness goals. These capsules use time-release technology: the plant-based enzyme is designed to be released immediately upon entering your stomach, where the pH environment is generally more acidic, while the animal-based enzyme is designed to delay its release in the lower intestine region, where the environment is more alkaline.