Functional Ingredient

Melatonin

Melatonin is produced naturally by the pineal gland, primarily in response to darkness. It acts as a biological timing signal that helps coordinate the body's circadian rhythm.

Supplemental melatonin supports sleep-related routines by working with the body's normal sleep-wake signalling.

In everyday life, Melatonin helps signal that biological night has arrived, supporting a smoother transition toward sleep when timing and dose are appropriate.

Appropriate timing, dose and a consistent evening routine influence its intended use.

Available in

1 product

Ingredient overview

What it is

Melatonin is produced naturally by the pineal gland, primarily in response to darkness. It acts as a biological timing signal that helps coordinate the body's circadian rhythm.

  • Scientific identity: Melatonin; molecule: N-acetyl-5-methoxytryptamine.
  • How it works: Made from tryptophan: The pineal gland converts tryptophan, via serotonin, into melatonin. Released on a light-governed schedule: Levels begin climbing about two hours before habitual sleep onset, and light suppresses release.
  • Primary function: Supplemental melatonin supports sleep-related routines by working with the body's normal sleep-wake signalling.
  • What it supports: Melatonin helps signal that biological night has arrived, supporting a smoother transition toward sleep when timing and dose are appropriate.
  • Important consideration: Appropriate timing, dose and a consistent evening routine influence its intended use.

Formulation rationale

Why we use it

CARPEDIEM selected Melatonin for a clearly defined role within a thoughtfully balanced formulation.

  • Formulation purpose: Supplemental melatonin supports sleep-related routines by working with the body's normal sleep-wake signalling.
  • Used in: CARPEDIEM SleepTime and CARPEDIEM Women’s Sleep & Wellness Stack.
  • Works alongside: Melatonin complements L-Theanine and Magnesium Bisglycinate to support a more complete functional-wellness formulation.
  • Meaningful contribution: Melatonin helps signal that biological night has arrived, supporting a smoother transition toward sleep when timing and dose are appropriate. Provides a naturally occurring signalling molecule associated with nighttime physiology.
  • Quality and scientific context: Appropriate timing, dose and a consistent evening routine influence its intended use. 4 ingredient-specific studies are included because the research reports a relevant benefit.

Ingredient intelligence

How it works

A timing signal, not a sedative - which is why when you take it matters most.

Step 01 / 04

Made from tryptophan.

The pineal gland converts tryptophan into serotonin and then into melatonin.

01 / 04

Molecule

N-acetyl-5-methoxytryptamine

Made from

Tryptophan, in the pineal gland

Nature

A timing signal, not a sedative

Half-life

30 to 60 minutes

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.

All key functions

The complete functional profile connected with this ingredient.

Supports the body's normal sleep-wake rhythm and biological timing signals.

Complements a consistent evening routine designed around more regular sleep habits.

Provides a naturally occurring signalling molecule associated with nighttime physiology.

Works with circadian pathways that help the body recognise the transition into night.

Supports sleep-focused nutrition without functioning as a conventional stimulant.

Pairs naturally with magnesium and L-theanine in balanced evening formulations.

Helps signal that biological night has arrived, supporting a smoother transition toward sleep when timing and dose are appropriate.

Works alongside L-Theanine and Magnesium Bisglycinate to create a more coordinated, science-led nutritional formula.

Selected research

Open the original paper, PubMed record or DOI page for the full publication.

Products containing Melatonin

Explore the Carpediem formulations connected with this ingredient.

Complementary by function

Ingredient intelligence

How it works

A timing signal, not a sedative - which is why when you take it matters most.

Step 01 / 04

Made from tryptophan.

The pineal gland converts tryptophan into serotonin and then into melatonin.

01 04

Molecule

N-acetyl-5-methoxytryptamine

Made from

Tryptophan, in the pineal gland

Nature

A timing signal, not a sedative

Half-life

30 to 60 minutes

Descriptive of the ingredient's established biology. Not a claim to diagnose, treat, cure or prevent any disease.