Is it true that the Saint John’s reduces the effectiveness of finasteride?

hello doctors, Ive been on finasteride for the past 8 months and it has been working at decreasing hair loss. Ive been also recently prescribed a low dosage of Saint John’s Wort to deal with stress. Is it true that the Saint John’s reduces the effectiveness of finasteride? I would not like to risk the hair growth I have achieved . Thank you Eli