Tegan Smedley, PharmD, BCPS, APhWritten by Jennifer Gershman, PharmD, CPh, PACS | Reviewed by Tegan Smedley, PharmD, BCPS, APh Key takeaways: Prostock-Studio/iStock via Getty Images Plus At some point, you or a loved one have likely experienced trouble sleeping. And if it happens frequently, you may be experiencing insomnia — a condition involving trouble falling...