Does it hurt the kidneys?

A large amount of Houttuynia cordata may cause damage to the kidneys. Because Houttuynia cordata contains a component called aristolochic acid, this substance can induce kidney hydrolysis, resulting in rapid decline in kidney function. Some severe cases may need dialysis treatment to maintain normal life status. However, a small amount of Houttuynia cordata does not cause damage to the kidneys. Houttuynia cordata has the effects of clearing away heat and toxic materials, diuresis, purulent elimination, invigorating stomach and digestion, etc. It can be used to treat lung carbuncle and purulent vomiting, phlegm heat asthma cough, heat stranguria, etc. However, it is forbidden to take houttuynia cordata for those with deficiency cold of spleen and stomach or deficiency cold disease syndrome.