Medicinal and Nutritional Potential of Guava Leaves: A Natural Remedy for Health and Wellness

Psidium guajava (guava), a tropical fruit of the Myrtaceae family, is renowned for its nutritional richness and medicinal properties. Cultivated widely in tropical and subtropical regions, it plays a vital role in traditional medicine across India, Pakistan, South America, and other countries. Various parts of the guava tree, such as its leaves, fruits, bark, and roots, are utilized to treat ailments like diabetes, diarrhea, and stomach disorders. Guava leaves are particularly notable for their high content of bioactive compounds, including flavonoids, tannins, phenolic acids, and essential oils. These compounds provide a range of pharmacological benefits, such as antioxidant, antidiabetic, anticancer, antimicrobial, and antidiarrheal activities. Phenolic compounds like quercetin and gallic acid, along with essential oils, contribute to reducing oxidative stress, improving insulin sensitivity, and combating microbial infections. Rich in nutrients like vitamins C and B, calcium, potassium, and magnesium, guava leaves also offer significant health benefits, including enhanced immunity, improved bone strength, and better metabolic regulation. This review highlights the therapeutic potential of guava leaves as a natural and sustainable resource, emphasizing their role in modern nutraceuticals and pharmaceuticals for promoting health and managing chronic diseases.