Liquid Melatonin by Nutra BioGenesis

This liquid suits adults whose trouble is falling asleep at the right time: jet lag, a change of shift, a body clock that has drifted late, or the lighter sleep that comes with age as the body makes less melatonin of its own. It is less useful if you fall asleep easily but wake in the small hours. The label states that it is for adults and should not be used by children or teenagers.

Melatonin is the hormone the pineal gland releases as daylight fades. It does not sedate the way a sleeping pill does; it tells the body clock that night has begun, which shortens the time it takes to fall asleep and can move the sleep window earlier. Each serving also supplies vitamin B6 as pyridoxine HCl, a cofactor in the pathway that turns tryptophan into serotonin and then melatonin. The liquid is sweetened with organic stevia and contains sunflower lecithin.

One serving is 15 drops (1 mL) and provides 1.5 mg of melatonin and 1.5 mg of vitamin B6. The label directs 1 serving up to twice daily at bedtime, or as directed by your healthcare practitioner. Shake the bottle, take the drops 30–60 minutes before you want to sleep, and keep lights and screens low afterward. More is not reliably better. Refrigerate after opening.

Melatonin adds to the effect of sedatives, sleep medicines and alcohol, and you should not drive or operate machinery after taking it. Fluvoxamine raises melatonin levels sharply. Check with your prescriber if you take warfarin or another blood thinner. The label asks you to keep your practitioner informed if you are pregnant or nursing, a young adult, taking medications, or living with an autoimmune condition, diabetes or another endocrine disorder, or a depressive disorder.

Any effect on falling asleep shows within the first few nights; for jet lag, take it at bedtime in the new time zone for several nights. The average benefit in studies is modest: people fall asleep somewhat sooner. Morning grogginess, vivid dreams or a headache suggest the amount is too high or taken too late. If sleep has not improved after 2–4 weeks, look for other causes with your clinician instead of taking more.