Buy Guava Leaves / Guava leaves. Botanical name: Psidium guajava Family: Myrtaceae Packing: 20 kg bags Origin: Egypt Amazing health benefits of Guava leaves tea: 1) Guava leaves help to treat diarrhea. Putting guava leaf in a cup of boiling water and drinking it on an empty stomach prevents the growth of Staphylococcus aureus bacteria which is a very common cause of diarrhea. 2) Guava leaves tea can be used to lower blood cholesterol levels. This fact has been proven in a study published in an article in Nutrition and Metabolism. 3) A Japanese study has confirmed that guava-leaf tea has a superior ability to regulate the sugar levels of the blood after meals. So it is commonly used in the treatment and prevention of diabetes. 4) Guava-leaf tea helps to lose weight. Drinking them regularly prevents complex carbohydrates from turning into sugars. Contact us now for more info & order.