Papaya Leaf
Carica papaya
The papaya tree is common to many tropical regions of the world. Papaya leaves and their extracts are sold as dietary supplements to improve the immune system and increase platelet counts.
 
Lab studies suggest that papaya leaf may inhibit a variety of bacteria and improve platelet counts. 
 
Uses
Antimicrobial
Lab studies show that papaya leaves can stop the growth of a variety of bacteria.
Improve platelet count
Although papaya leaf may increase platelet count in patients with dengue fever, evidence is lacking. More study is needed on dosing, safety, and effectiveness before it can be used for this purpose.