SUSTAINED-RELEASE SLEEP MAINTENANCE
30-day supply
Key Benefits
Helps you fall asleep faster and stay asleep through the night
Supports uninterrupted, deep sleep cycles
Gradual melatonin delivery mimics natural pattern
Ideal for those who wake in the middle of the night
Recommended Dose
3mg sustained-release
Take one 3mg sustained-release capsule 30-60 minutes before bedtime. Do not crush or chew — the sustained-release mechanism requires the capsule to dissolve gradually. Allow a full 7-8 hour sleep window to avoid morning grogginess from the extended release.
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The Details
Standard melatonin is great for sleep onset — it helps you fall asleep. But your body's natural melatonin doesn't peak and disappear; it maintains elevated levels throughout the night, gradually declining toward morning. If you wake at 2 or 3 AM and can't fall back asleep, a standard melatonin supplement (which is fully absorbed within 1-2 hours) has already come and gone.
Sustained-Release melatonin solves this by using a matrix that gradually dissolves over 6-8 hours, releasing melatonin in a pattern that more closely mimics your body's natural nighttime production. The initial release supports falling asleep, and the continued release supports staying asleep through the second half of the night.
This is particularly beneficial for older adults (whose natural melatonin production is lower and peaks earlier), shift workers adjusting to daytime sleep, and anyone whose middle-of-the-night waking is disrupting their sleep quality. Clinical studies show sustained-release melatonin improves sleep maintenance, increases total sleep time, and enhances next-day alertness compared to immediate-release formulations.
Research
Key studies supporting Melatonin SR, from peer-reviewed journals.
Nightly treatment of primary insomnia with prolonged release melatonin for 6 months: a randomized placebo controlled trial — 2010
Efficacy of prolonged release melatonin in insomnia patients aged 55–80 years: quality of sleep and next-day alertness outcomes — 2007
Study titles are simplified for readability. Provided for informational purposes — not medical advice.
Transparency
Every batch is independently tested by ISO-17025 accredited labs for purity, potency, and contaminants.
Designed by healthcare professionals using evidence-based research and clinical expertise.
Manufactured in cGMP & UL certified, FDA-registered facilities with a flawless inspection record.
Important Information
Contraindications
Not suitable for
May cause drowsiness — allow a full 7-8 hours for sleep. Not recommended with sedative medications, for those with autoimmune conditions, or during pregnancy/breastfeeding.
As with any natural health product, consult your healthcare practitioner. Store in a cool, dry place. Keep out of reach of children. Discontinue use immediately if you experience an adverse event.
Really good supplement brand. The daily pack format is so convenient and I've been 100% consistent because of it. The quiz was genuinely thorough. Knocked one star off because I'd love the option to add or remove individual supplements as I learn more about my body.
I've tried so many supplements and honestly nothing has worked like this. The quiz is actually thorough and the results show it. Energy is UP, recovery is UP, sleep is SO much better. Can't believe it took me this long to find this brand.
Three weeks in and I already feel the difference. My morning energy is COMPLETELY different. No more dragging myself out of bed. The personalization through the quiz is what makes it work — it's not just a generic multivitamin. Stack actually thought about what MY body needs.
I've been on a health optimization journey for about three years and have tried what feels like every supplement brand on the market. Most of them are either generic multivitamins dressed up in pretty packaging, or they're so specific that you need to be a nutritionist to understand what you're actually taking. Stack sits in a completely different category. The quiz is the first thing that impressed me. It asks genuinely intelligent questions — not just 'how old are you and what's your gender' but questions about your diet, your sleep patterns, your stress levels, your exercise frequency. It felt like a real consultation rather than a data collection exercise. The pack that arrived was clearly personalized to my answers. After six weeks, the improvements have been consistent and measurable: better sleep quality, more stable energy throughout the day, and noticeably faster recovery after my runs. My partner commented that I seemed more 'on' in the evenings rather than crashing after dinner. The daily pack format is brilliant for compliance — I've been 100% consistent because the habit is so frictionless. One pack, done, every morning. No bottles, no measuring, no forgetting half of them. Genuinely one of the best health investments I've made.
My focus at work has been sharper and I'm waking up without that groggy feeling I used to have every morning. Told two friends about Stack already. Customer support was also really helpful when I had a question about one of the ingredients.
honestly wasn't sure about it at first but three weeks in and i'm so glad i tried it. energy is way better, i'm sleeping properly for the first time in months. the quiz was really detailed which gave me confidence it was actually personalized. would 100% recommend.
Personalized for you
Take our 2-minute Health Assessment and let our AI build your personalized stack — every supplement chosen for your specific goals.
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