Melatonin is a chronobiotic agent, meaning that it helps to regulate the body’s sleep-wake cycle.

It works best as a supplement when it’s taken before the body’s natural evening melatonin starts to rise (typically around 2 hours before wanting to fall asleep).

This helps to shift the sleep-wake cycle forward, thereby helping you to fall asleep faster.

Spirulina is a natural blue-green algae (cyanobacteria). It also contains a vivid blue pigment called phycocyanin, and its extract is used as a natural coloring agent in foods and supplements. In this product, the blue color of the capsules comes from spirulina instead of artificial dyes.

California’s Proposition 65 law has an extremely low threshold for lead exposure: it requires a warning label if a product may expose you to more than 0.5 micrograms of lead per day.

This 0.5 µg/day limit is far below federal safety standards and even lower than the trace amounts of lead naturally present in many fruits and vegetables.

Out of an abundance of caution, for the first manufacturing batch we included the Prop65 warning.

But we're pleased to show our Certificate of Analysis which shows that 'Sleep by Dr Brad' has come well under the stringent Prop65 lead 0.5 µg/day limit.

So the Prop65 warning is not necessary, and will be removed for future batches

Most over-the-counter melatonin supplements contain 3,000–10,000 mcg (3–10 mg), which is far above the body’s natural nightly melatonin production (~10–80 mcg) [1].

High doses can linger in the bloodstream into the next morning, potentially causing grogginess or hormonal desensitization over time [2]. In contrast, 300 mcg (0.3 mg) is a physiological dose shown in clinical trials to improve sleep efficiency just as effectively as higher doses, but without the side effects [3].

This approach supports your body’s natural rhythm without overwhelming it.

Yes, this supplement is designed for regular use and includes ingredients that are considered safe for long-term use in healthy
adults.

Melatonin has been studied in long-duration trials (up to 12 months) without evidence of withdrawal or tolerance at low doses[ 4].

Magnesium and glycine are essential nutrients or amino acids with excellent safety profiles when used within typical supplemental ranges [5][6].

As always, speak with your healthcare provider if you have underlying health conditions or are taking medications that affect sleep or neurotransmission.

Unlikely. Unlike high-dose melatonin supplements that can leave you with residual drowsiness, the 300 mcg dose in this formula is low enough to wear off by morning, helping you avoid the “melatonin hangover” effect [3][7].

In fact, research shows that low-dose melatonin combined with glycine may help you feel more refreshed and alert the next day, not groggy [8]. This supplement is formulated to support restful sleep while allowing for a clear, energetic morning.