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Most Melatonin Sprays Flunk German Lab Tests, Raising Safety and Labeling Concerns

Independent testing in Germany finds over-the-counter sprays often misstate melatonin content, offering only marginal benefit for healthy users.

Overview

  • Öko-Test assessed 19 sprays and rated 16 as poor or inadequate, with only three judged sufficient.
  • Laboratory measurements frequently diverged from declared doses, and some products exceeded thresholds that certain control authorities would classify as medicinal.
  • A scientific review commissioned by the testers found sleep onset shortened by about seven minutes on average in healthy consumers.
  • The BfR warns of short-term effects such as drowsiness, reduced attention, and gait instability even below 1 mg, with long-term risks insufficiently studied for children and people at diabetes risk.
  • Many sprays lacked complete risk-group warnings and used unproven botanical additives, leading testers to recommend prioritizing sleep hygiene and reserving sprays for short-term, doctor-advised use.