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.
The most important thing a patient can do is to seek out medical help as soon as possible. Without treatment, depression can last significantly longer as is the case with chronic depression which is characterized by lasting more than two years. Untreated depression can also result in a higher risk of suicide attempts.