Was shannen doherty on drugs on charmed?

There is no public evidence to definitively state that Shannen Doherty was on drugs during her time on "Charmed." However, she faced personal challenges, including a well-documented battle with health issues and difficulties with her co-stars, which led to her departure from the show after the third season. Speculation about her behavior has circulated, but it is essential to differentiate between rumors and verified information.