Houttuynia cordata

Houttuynia cordata, also known as fish mint, fish leaf, rainbow plant, chameleon plant, heart leaf, fish wort, is one of two species in the genus Houttuynia (the other being H. emeiensis). 

It is a flowering plant native to South Asia. Some of the health benefits of the plant: 

Antioxidant, anti-aging agent, treatment of Urinary tract infections, etc.