As for over the counter remedies, there are two classes of over the counter
. What this really means are drugs
that don't require a prescription. Some people, for example, for good or ill, use allergy medication for sleep and anxiety because it's so sedating, using a drug for it's unwanted side effects rather than its effects. Then there are natural remedies, which aren't classified as drugs for the most part unless they're not actually natural even though they're advertised as such.