After some early struggles, Cerebral hit on a lucrative new avenue for growth: prescribing controlled substances. WSJ’s Rolfe Winkler investigates how one tightly regulated medicine – Adderall – became crucial to Cerebral’s business. Some former employees take us inside the move into controlled substances and describe feeling pressured by the company to prescribe regulated medications. Cerebral denies pressuring employees and says it has helped many people get access to much-needed care. Further Reading: - Startup Cerebral Soared on Easy Adderall Prescriptions. That Was Its Undoing.  - Startups Make It Easier to Get ADHD Drugs. That Made Some Workers Anxious.  Further Listening: - The Journal: Uncontrolled Substances, Part 1: Subscribe and Prescribe - Science Vs: Adderall: What's It Doing to Your Brain?  Learn more about your ad choices. Visit megaphone.fm/adchoices