Easier travel by removal of jet-lag Normalization of circadian rhythms Easier adaptability to shift / night work Dr.Pierpaoli’s Original formula With Melatonin MZS You Really Can Enjoy A Sound Night’s Sleep. Melatonin is produced by the pineal gland at night to regulate our circadian rhythm (sometimes called the sleep wake cycle). As we age the amount of melatonin we produce reduces resulting in many older people sleeping less and having a lower quality of sleep. Formulated by the world’s foremost melatonin expert Dr Walter Pierpaoli, unlike any other melatonin supplement on the market Melatonin Zn Se mimics the natural night peak of melatonin to leave you feeling refreshed and alert the following day.