Stack Labs® Sleep Stack
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Fall Asleep Faster
Sleep Deeper
Wake Refreshed
Melatonin Free
Made In USA
Less ingredients. Better sleep.
Sleep Stack is a premium four-ingredient sleep formula designed to help you fall asleep naturally, stay asleep longer, and wake feeling refreshed. We carefully selected ingredients that work together to support restorative sleep—without melatonin or unnecessary fillers.
Made in the USA in a cGMP-certified facility.
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Less Ingredients. Better Sleep.
Most sleep supplements contain long lists of ingredients with little scientific justification. We took a different approach.
Sleep Stack combines four carefully selected ingredients—Magnesium Glycinate, Glycine, L-Theanine, and Apigenin—that work together to help calm the mind, support deep restorative sleep, and help you wake feeling refreshed.
No melatonin. No unnecessary fillers. Just a smarter, science-backed formula designed for consistent nightly use.
Every ingredient has a purpose. Nothing has been added simply to fill a label.
The Four-Ingredient Stack
Magnesium Glycinate
Supports muscle relaxation and helps calm the nervous system, preparing your body for deeper, more restorative sleep.
Glycine
Helps lower core body temperature and supports natural sleep onset while promoting better sleep quality throughout the night.
L-Theanine
Encourages relaxation without drowsiness by promoting alpha brain waves and helping quiet a busy mind before bed.
Apigenin
A naturally occurring flavonoid that supports relaxation and complements the other ingredients to promote deeper, more restorative sleep.
A better formula isn't about adding more ingredients—it's about choosing the right ones.
Why Only Four Ingredients?
Many sleep supplements contain 10, 15, or even 20 ingredients. While that may look impressive on the label, more isn't always better.
At Stack Labs, we believe every ingredient should have a clear purpose. That's why we focused on four clinically recognised ingredients that complement one another instead of creating an overcomplicated formula.
The result is a clean, science-backed supplement designed to help you fall asleep naturally, stay asleep longer, and wake feeling refreshed—without melatonin or unnecessary fillers.
A consistent bedtime routine helps you get the most from Sleep Stack.
How to Get the Best Results
For optimal results, take 2 capsules with water 30–60 minutes before bedtime.
Sleep Stack works best when taken consistently as part of a healthy evening routine. For the best sleep experience, aim to maintain a regular bedtime, reduce screen time before bed, and create a cool, comfortable sleeping environment.
Everyone responds differently, but many people notice improvements in relaxation and sleep quality within the first few nights of consistent use.
Supporting your body's natural sleep processes—without supplemental melatonin.
Why We Chose a Melatonin-Free Formula
Many sleep supplements rely on melatonin as their primary active ingredient. At Stack Labs, we took a different approach.
Sleep Stack combines four carefully selected ingredients that support relaxation and healthy sleep by working with your body's natural processes. Rather than relying on supplemental melatonin, our formula focuses on ingredients chosen to complement one another and promote a calm mind, a relaxed body, and more restorative sleep.
It's a simple philosophy: fewer ingredients, thoughtfully combined, for a better night's sleep.
Every bottle is built around quality, transparency, and a commitment to better sleep.
The Stack Labs Promise
Premium Ingredients
We source carefully selected ingredients chosen for quality, purity, and purpose.
Transparent Formulas
No proprietary blends. Every ingredient has a clear role in the formula.
Made in the USA
Manufactured in a cGMP-certified facility to the highest quality standards.
Science-Backed
Our formulas are built around researched ingredients—not marketing trends.
Better sleep begins with better ingredients. Experience the difference a focused, science-backed formula can make.
Your Best Sleep Starts Tonight.
Sleep Stack was created for people who value quality, transparency, and results. Whether you're looking to improve your nightly routine or wake feeling more refreshed, our carefully selected four-ingredient formula is designed to support better sleep—naturally.