Hetlioz (tasimelteon), Neupro (rotigotine transdermal system), and Silenor (doxepin) can treat specific sleep disorders like insomnia. Over-the-counter (OTC) sleep aids like melatonin can also ...

All of this applies to the molecules in pills, too. "Since 1985, drug manufacturers had only been aware of one polymorphic form of rotigotine—a medication prescribed for the treatment of ...