Pueraria lobata has no therapeutic effect on cancer cells.
The effects of Radix Puerariae are relieving muscle fever, penetrating rash, promoting fluid production to quench thirst, and invigorating yang to stop diarrhea.
Its effect on digestive system is embodied in promoting fluid production to quench thirst, invigorating yang to stop diarrhea.
If your father has symptoms such as diarrhea and thirst caused by cancer, you can use Pueraria lobata.