Two of the most popular dietary supplements used for insomnia are: 1  Melatonin, a hormone produced by the brain. You can also buy it as a supplement. 2  Valerian, an herbal sleep remedy. Valerian appears to be safe, and it may improve sleep when taken for a week or two.
The average spell of clinical depression, if left entirely untreated, will last around 8 months. During a depression, the sufferer will normally be convinced that it will never go away, but this is a classic feature of the way depression makes us think.
1 Episodes of teen depression generally last about 8 months. 2  Dysthymia, a type of mild, long-lasting depression, affects about 2 percent of teens, and about the same percentage of teens develop bipolar disorder in their late teenage years. 3  15 percent of teens with depression eventually develop bipolar disorder.