Season 2 of the Netflix series “Russian Doll” brought the Black Beauty drug back into the spotlight after it had been largely forgotten for decades. Though these sleek black pills were popular in the 1960s and 70s, they lost some of their favor as similar drugs like Adderall hit the market. Delivering energy, euphoria, and weight loss, the Black Beauty drug has ample appeal. Unfortunately, its benefits come with a host of harrowing risks and side effects. Here’s what you need to know about the drug.