Shiepz Melatonin 5 mg tablets Medicine RVG 125560 UAD Claims The active substance in Shiepz Melatonin is melatonin. This substance belongs to a natural group of hormones produced by the body. What it is used for Shiepz Melatonin is used for short-term treatment of jet lag in adults. Jet lag refers to the complaints caused by time differences by traveling in different time zones (by traveling east or west). Do not use if - You are allergic to one of the substances in this medicine.