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.
Clinical depression lasts a long time. If you are like most people who become depressed, you have done your best to overcome your depression, only to notice that you are quickly pulled back into it again. The typical bout of major depression, if not treated, will last from six to fifteen months.