Advancis^® Passival Sleep is a food supplement. It should not be used as a substitute for a varied and balanced diet and a healthy lifestyle. Melatonin contributes to the reduction of time required to fall asleep. This beneficial effect is obtained by consuming 1 mg of melatonin at bedtime. Melatonin also contributes to the relief of the subjective symptoms of jet lag. This beneficial effect is achieved with a minimum intake of 0.5 mg of melatonin, taken at bedtime on the first day of travel and on the following days after arrival at the destination. A daily dose of Advancis^® Passival Sleep provides the necessary amount to achieve the beneficial effects claimed for melatonin.