Science-Based Nutrition Highest Potency Helps Support Healthy Digestion and Joint Comfort Dietary Supplement Non-GMO / Gluten Free / Vegan Bromelain is an enzyme derived from pineapple stem and fruit that has proteolytic (protein-digesting) properties. The bromelain found in Best 3000 GDU Bromelain is one of the most potent forms of this enzyme found on the market. The 3000 GDU refers to the standardization of enzymatic potency and reflects the quality of the raw material used in the product. Bromelain is renowned for its digestion-enhancing characteristics and also has beneficial systemic effects within the body. Bromelain may also help support cardiovascular and joint health.