Melatonin is the pineal hormone that signals night to the body, and a potent antioxidant on top of that. This is the injectable form, which delivers faster and more predictably than the usual oral route. Circadian research leans on it for jet-lag and shift-work models.
- The pineal hormone that regulates the sleep-wake cycle, and a potent antioxidant in its own right.PubMed: melatonin
- It shifts circadian timing and promotes sleep onset, which is why jet-lag and shift-work models rely on it.PubMed: melatonin
- Oral is the usual route; this injectable form is described as delivering faster and more predictably.researchdosing: melatonin
- Melatonin signals circadian timing rather than acting as a sedative, so study designs pair it with darkness and low stimulation.PubMed: melatonin
- Reported side effects include morning grogginess, vivid dreams, mild next-day drowsiness, and headache.Peptide Guide safety review