According to this study:
Chanca Piedra, which is very effective for kidney and gallblader stones, is also good at regrowing hair scalp thanks to its 5ar activity.
I am having a hard time understanding from this study whether:
- this effect is significant when you consume the herb in a tea as opposed to the alcohol extract
- this effect is systemic or localized to the scalp
- the magnitude can be compared to Propecia