Conversation so far:
How do you sleep after jet lag?
To avoid light in the morning, stay indoors, such as by going to a mall or a museum. If you flew west, stay awake during daylight, and try to sleep after dark. This may help adjust your body clock and help your body make melatonin at the right time.
Does melatonin help with jet lag?
Supplemental melatonin is commonly used for jet lag treatment; it's been shown to help with both sleep and reducing jet lag symptoms.
How was melatonin discovered?
Melatonin was first isolated in 1958 by American physician Aaron B. Lerner and his colleagues at Yale University School of Medicine.
What are good sources of melatonin in food?
However, there are a few excellent sources of naturally occuring melatonin in foods:Fruits and vegetables (tart cherries, corn, asparagus, tomatoes, pomegranate, olives, grapes, broccoli, cucumber)Grains (rice, barley, rolled oats)Nuts and Seeds (walnuts, peanuts, sunflower seeds, mustard seeds, flaxseed)
Is melatonin bad for you?
Swanson says melatonin supplements are safe for adults to use in the short term, but because there haven't been any long-term studies in humans, the long-term safety is unknown.
What are the side effects of melatonin?
However, it can cause some side effects including headache, short-term feelings of depression, daytime sleepiness, dizziness, stomach cramps, and irritability.

Question: Why does it require a prescription in the UK
Self-contained rewrite: Why does melatonin require a prescription in the UK?