Also known as: Papaya proteinase, Papaya enzyme
Papain is a cysteine protease enzyme extracted from the latex of unripe papaya fruit (Carica papaya). It is used as a digestive aid and has been studied for its anti-inflammatory and wound-healing properties, though high-quality clinical evidence remains limited.
Papain is a well-characterized cysteine protease enzyme obtained from the latex of Carica papaya (papaya), where it serves as a natural defense mechanism for the plant. The enzyme has a broad substrate specificity, capable of hydrolyzing proteins, peptides, amides, and esters. Papain has a long history of traditional use in Central and South America for digestive complaints and wound care. Its primary commercial and therapeutic application is as a digestive enzyme supplement, where it aids in the breakdown of dietary proteins. Papain is also used in topical wound debridement preparations, where it selectively degrades necrotic tissue while sparing healthy cells. In vitro and animal studies suggest anti-inflammatory, antioxidant, and immunomodulatory properties, but large-scale human clinical trials are scarce. The enzyme is measured in papain units (PU) and is typically formulated alongside other digestive enzymes such as bromelain, lipase, and amylase.
Papain supplementation has shown benefit in improving protein digestion and reducing symptoms of bloating and discomfort in individuals with digestive insufficiency, particularly when combined with other proteolytic enzymes.
Topical papain-based preparations have been used for enzymatic wound debridement, with clinical evidence demonstrating effective removal of necrotic tissue in chronic wounds and burns.
With meals, especially protein-rich meals
Often formulated in combination with bromelain, lipase, and amylase in multi-enzyme digestive supplements. Look for standardized papain units (PU).
Digestive support with meals
Quick digestive relief with meals
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