Melatonin
Melatonin is an endogenous hormone that is produced from the amino acid L-tryptophan via the intermediate 5-HTP in the pineal gland and, to a lesser extent, in the retina and intestines. Melatonin production and release is light-dependent, with darkness stimulating melatonin production and release, while daylight and blue screen light inhibit it. During the day, melatonin levels are around 3-12 times lower than at night. The release of melatonin initiates the regeneration phase and falling asleep and is responsible for the deep sleep phase. With advancing age, the body's own melatonin production decreases.
Sweet orange
The orange, also known as the sweet orange (Citrus sinensis), belongs to the rue family (Rutaceae) and is one of the most popular citrus fruits in the world. It originally comes from China and was spread to other parts of the world via trade routes. While the juicy flesh of the fruit is valued for its refreshing flavour and high vitamin C content, the peel of the orange also contains valuable ingredients. Orange peel oil, which is extracted from the peel by cold pressing, is rich in flavonoids and essential oils.
According to the European Food Safety Authority (EFSA), melatonin:
- reduces time needed to fall asleep
- alleviates feelings of jet lag
