PREVENT ACID REFLUX + HEARTBURN HCL Breakthrough is an all-natural source of betaine hydrochloric acid that increases stomach acid and hydrochloric acid to support digestion and detoxification. It also contains 5 different types of enzymes. HCL Breakthrough is 100% plant based and non-irritating. Most other HCL products contain an enzyme called pepsin, which is derived from animal intestines. Many people are sensitive to pepsin and have reactions. HCL Breakthrough does not contain pepsin. Often, mineral deficiency limits our ability to digest food. HCL Breakthrough contains a proprietary, full-spectrum mineral complex to help replenish those depleted by modern living and environmental stressors. A great number of digestive products contain or are derived from animals; however, those pose considerable risk to the body. Animal-derived products.