Core Sleep

Our Core formulation provides the building blocks for long-term sleep health to help you gently (but quickly) ease into sleep, maintain a state of deep sleep, and wake up feeling refreshed and restored.

  • Fall asleep faster + stay asleep
  • Contains Sensoril® Ashwagandha, GABA, Venetron®, and valerian root extract
  • Natural, non-GMO, sugar-free, no artificial colors or binders

When should I take Core Sleep?

Take 2 capsules with water 30-40 minutes before bed.

How long does Core Sleep take to begin working?

Everyone metabolizes ingredients at different rates, but you should start feeling the benefits of supported, healthy sleep the first night that you take it. Continual sleep improvements will follow over the next 3-5 days, with full benefits realized after several weeks of usage.

Are there any artificial colors or binders in Core Sleep?

Nope. Proper’s natural, non-GMO supplements are made with botanical extracts, which is why you may notice that they carry a subtle earthy, barn-like aroma. While we could have masked it, we didn’t want to add artificial colors and/or binders that would have compromised the product's purity.

Is Core Sleep safe to take long-term?

Yes. Proper’s supplements are carefully formulated by Dr. Alice Hirschel, our resident PhD in Nutritional Biochemistry, and reviewed by a world-class panel of medical experts in sleep, integrative, and naturopathic medicine. They are drug-free, non-habit-forming, and safe to take for both short and long-term sleep health.

Core Sleep is ideal for anyone who struggles to fall asleep, stay asleep, and/or feel rested upon waking. If you're looking for a natural, sleep-promoting supplement to add to your ongoing wellness routine, Core Sleep is for you.

Powered by Venetron® to help you fall asleep faster + stay asleep longer.

Results:

In a human clinical study, 50 mg/day of Venetron® significantly improved subjects’ ability to initiate and maintain sleep during the night.

How were the results measured:

The validated sleep questionnaire (OSA-MA) is a self-report questionnaire that covers initiation and maintenance of sleep, as well as dreaming frequency. A high score indicates better sleep. Studies show that subjects consuming Venetron® reported around a 275% improvement in initiation and maintenance of sleep compared to those taking the placebo.

Serving Size: 2 Capsules
Servings Per Container: 30

Amount per serving%DV
Valerian Root Extract (Valeriana officinalis) (std. to 0.8% Valerenic acid)300mg**
SENSORIL® Ashwagandha Root and Leaf Extract (Withania somnifera) (std. to 10% Withanolides)125mg**
GABA (Gamma-Aminobutyric acid)100mg**
VENETRON® Rafuma Leaf Extract (Apocynum venetum) (std. to 4% of Hyperoside & isoquercitrin)50mg**
**Daily Value (DV) not established

Other Ingredients: Vegetable Cellulose Capsule, Organic Rice Hulls Contains <2% Of: Ascorbyl Palmitate, Calcium Silicate

SENSORIL® is a registered trademark of Natreon, Inc.
Venetron® is a registered trademark of Tokiwa Phytochemical Co., Ltd.


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Core Sleep

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Our Core formulation provides the building blocks for long-term sleep health to help you gently (but quickly) ease into sleep, maintain a state of deep sleep, and wake up feeling refreshed and restored.

  • Fall asleep faster + stay asleep
  • Contains Sensoril® Ashwagandha, GABA, Venetron®, and valerian root extract
  • Natural, non-GMO, sugar-free, no artificial colors or binders

When should I take Core Sleep?

Take 2 capsules with water 30-40 minutes before bed.

How long does Core Sleep take to begin working?

Everyone metabolizes ingredients at different rates, but you should start feeling the benefits of supported, healthy sleep the first night that you take it. Continual sleep improvements will follow over the next 3-5 days, with full benefits realized after several weeks of usage.

Are there any artificial colors or binders in Core Sleep?

Nope. Proper’s natural, non-GMO supplements are made with botanical extracts, which is why you may notice that they carry a subtle earthy, barn-like aroma. While we could have masked it, we didn’t want to add artificial colors and/or binders that would have compromised the product's purity.

Is Core Sleep safe to take long-term?

Yes. Proper’s supplements are carefully formulated by Dr. Alice Hirschel, our resident PhD in Nutritional Biochemistry, and reviewed by a world-class panel of medical experts in sleep, integrative, and naturopathic medicine. They are drug-free, non-habit-forming, and safe to take for both short and long-term sleep health.

Core Sleep is ideal for anyone who struggles to fall asleep, stay asleep, and/or feel rested upon waking. If you're looking for a natural, sleep-promoting supplement to add to your ongoing wellness routine, Core Sleep is for you.

Powered by Venetron® to help you fall asleep faster + stay asleep longer.

Results:

In a human clinical study, 50 mg/day of Venetron® significantly improved subjects’ ability to initiate and maintain sleep during the night.

How were the results measured:

The validated sleep questionnaire (OSA-MA) is a self-report questionnaire that covers initiation and maintenance of sleep, as well as dreaming frequency. A high score indicates better sleep. Studies show that subjects consuming Venetron® reported around a 275% improvement in initiation and maintenance of sleep compared to those taking the placebo.

Serving Size: 2 Capsules
Servings Per Container: 30

Amount per serving%DV
Valerian Root Extract (Valeriana officinalis) (std. to 0.8% Valerenic acid)300mg**
SENSORIL® Ashwagandha Root and Leaf Extract (Withania somnifera) (std. to 10% Withanolides)125mg**
GABA (Gamma-Aminobutyric acid)100mg**
VENETRON® Rafuma Leaf Extract (Apocynum venetum) (std. to 4% of Hyperoside & isoquercitrin)50mg**
**Daily Value (DV) not established

Other Ingredients: Vegetable Cellulose Capsule, Organic Rice Hulls Contains <2% Of: Ascorbyl Palmitate, Calcium Silicate

SENSORIL® is a registered trademark of Natreon, Inc.
Venetron® is a registered trademark of Tokiwa Phytochemical Co., Ltd.


Limited-time offer

Holiday packaging and a free mystery sample pack ($8 value) with purchase!

Smart Supplements

A portfolio of evidence-backed supplements designed for your unique sleep needs.

Expert Coaching

Personalized sleep action plans help you make behavioral and environmental changes.

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Ingredients

Ingredient story:

Valeriana officinalis, commonly known as valerian, is an herb native to Europe and Asia whose roots have been used since ancient Greek and Roman times as a sleep promoter. It plays a role prior to and during N1 (first sleep stage), when the body needs to feel calm, relaxed, and drowsy in order to move to N2 (second sleep stage). By working synergistically with a natural amino acid known as GABA, valerian root extract ensures a more relaxed, calm state.

Highlights:

  • Works synergistically with GABA to ensure a less stimulated response
  • Together, the two promote a more relaxed, calm mind and body
  • Promotes restful sleep

Dosing:

Core Sleep contains 300 mg of valerian standardized to a clinically beneficial dosage of 0.8%.

Citations:

  • Leathwood, Peter D., Françoise Chauffard, Eva Heck, and Raphael Munoz-Box. “Aqueous Extract of Valerian Root (Valeriana Officinalis L.) Improves Sleep Quality in Man.” Pharmacology Biochemistry and Behavior 17, no. 1 (1982): 65–71.
  • Oxman, Andrew D., Signe Flottorp, Kari Håvelsrud, Atle Fretheim, Jan Odgaard-Jensen, Astrid Austvoll-Dahlgren, Cheryl Carling, Ståle Pallesen, and Bjørn Bjorvatn. “A Televised, Web-Based Randomised Trial of an Herbal Remedy (Valerian) for Insomnia.” PLOS ONE. Public Library of Science. Accessed June 16, 2020.
  • Santos, Maria, Fernanda Ferreira, António Cunha, Arsélio Carvalho, and Tice Macedo. “An Aqueous Extract of Valerian Influences the Transport of GABA in Synaptosomes.” Planta Medica 60, no. 03 (1994): 278–79.
  • Morazzoni P, Bombardelli E. “Valeriana officinalis: traditional use and recent evaluation of activity.” Fitoterapia 66: 99-112 (1995)

Ingredient story:

Ashwagandha is an adaptogen, which refers to a group of herbs that have been used in Ayurveda (traditional Indian medicine) for thousands of years to promote longevity, enhance vitality, support a healthy immune response, enhance focus, and help reduce everyday stress and fatigue.

The Sensoril® Ashwagandha in our supplement is derived from a unique extract of the leaves and roots of the Withania somnifera plant that have been studied in 14 human clinical trials. It has been shown to decrease cortisol (a key marker of stress) and relieve occasional sleeplessness.

Highlights:

  • Decreases cortisol, a key marker of stress
  • Reduces malondialdehyde (MDA), a key marker of oxidative stress
  • Relieves occasional sleeplessness

Dosing:

Core Sleep contains a clinically beneficial dosage + standardization level of 125 mg of Sensoril® Ashwagandha.

Citations:

  • Auddy B, Hazra J, Mitra A, Abedon B, Ghosal S. “A standardized Withania somnifera extract significantly reduces stress-related parameters in chronically stressed humans: A double-blind, randomized, placebo-controlled study.” JANA. 2008;11(1): 50-56.

Ingredient story:

Gamma-Aminobutyric acid (GABA) is an amino acid produced naturally in the brain. When GABA binds to its receptor (GABA-A), it renders the neuron less responsive to stimulation. In essence, it suppresses or inhibits the central nervous system to reduce excitability and, when bound, produces an immediate calming effect that may support a reduction in stress, anxiety, and sleeplessness.

Highlights:

  • Reduces excitability
  • Promotes relaxation + calmness

Dosing:

Core Sleep contains a clinically beneficial dosage of 100 mg of GABA.

Citations:

  • Abdou, Adham M., S. Higashiguchi, K. Horie, Mujo Kim, H. Hatta, and H. Yokogoshi. “Relaxation and Immunity Enhancement Effects of γ-Aminobutyric Acid (GABA) Administration in Humans.” BioFactors 26, no. 3 (2006): 201–8.
  • Gottesmann, Claude. “GABA Mechanisms and Sleep.” Neuroscience. Pergamon, April 22, 2002.

Ingredient story:

Sourced from Japan, Venetron® is a patented, purified, powdered extract from the leaves of a wild perennial plant native to Central Asia and warm regions in Europe: Apocynum venetum L. (or “Rafuma” in Japanese). It has been used for centuries to promote sleep health. By binding to the GABA-A receptor, it reduces excitability and produces a calming effect.

Venetron® has been shown to impact multiple stages of sleep—including N1 and N2, where it has been clinically shown to help sleep initiation, and N3, where it has been shown to enhance non-REM sleep time.

Highlights:

  • Improves initiation + maintenance of sleep
  • Helps you fall asleep faster + stay asleep
  • Reduces feelings of nervousness, restlessness, + irritation

Dosing:

Core Sleep contains a clinically beneficial dosage + standardization level of 50 mg of Venetron®.

Citations:

  • Yamatsu, Atsushi, Yusuke Yamashita, Isafumi Maru, Jinwei Yang, Jin Tatsuzaki, and Mujo Kim. “The Improvement of Sleep by Oral Intake of GABA and Apocynum Venetum Leaf Extract.” Journal of Nutritional Science and Vitaminology 61, no. 2 (2015): 182–87.
  • Nakata, A. et al. “Effect of an Apocynum venetum leaf extract (venetron™) on sleep quality and psychological stress improvement.” Japan Pharmacology Therapeutics (JPT), no. 46 (2018): 117-125.

Pair Core Sleep with personalized coaching to optimize your long-term sleep quality

Consult with a board-certified coach, who will help you address underlying causes of your sleep problems and build healthy, sustainable sleep habits.

Proper coaching image

Get a personalized sleep action plan

  • Complete an intake form to help your coach understand your sleep issues and goals
  • Schedule a 1:1 Zoom consultation with your sleep coach
  • Get a tailored sleep action plan with sustainable strategies and tips

I've never felt so ready to wake up early and own the day as I have after taking Core Sleep - I am sleeping uninterrupted from the time I get in bed until it's time to wake up. I am 0% groggy, 100% recharged.

Gaeb C., New Jersey

Proper

Safe

Drug-free, non-habit-forming, & safe to take as part of a long-term sleep wellness routine.

Effective

PhD-designed formulas contain ingredients at dosage levels clinically proven to improve your sleep.

Minimal

Natural, vegan, gluten/dairy/sugar-free, non-GMO. No artificial colors or binders.

More than Melatonin

It’s great to have options. Melatonin is perfect for some, not for others.

Clean

We third-party test every formula for purity, and verify the absence of heavy metals, microbes, pesticides.

Standard

All of our botanical ingredients are standardized extracts to guarantee consistent purity, potency, and efficacy.

Quality

High quality, natural, and unique ingredients backed by clinical evidence in human trials.

U.S. Manufactured

Produced in a FDA-approved facility that is Good Manufacturing Practices and Guidelines (CGMP) compliant.

Thoughtfully delivered natural sleep aids

Proper supplement capsules
  • Small capsules, big impact.
  • Capsules are designed for efficacy, potency, and minimalism
  • Smaller capsules lead to greater adherence
  • No refrigeration needed
  • Refillable glass jar
  • Recyclable cardboard packaging
  • Our pouches are recyclable and the padded envelope used to ship these pouches is made of 100% recycled paper

Warning

For adults 18 and over only. If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use. Discontinue use and consult your doctor if any adverse reactions occur. Keep out of reach of children. Do not use it if the seal under the cap is broken or missing. Store at room temperature. Do not consume alcohol, drive or operate machinery after taking this product.

Discover which Proper formulation works best for you

Everyone's biochemistry is different.

Try our Discovery Trial Pack to find what works best for you.

Includes samples of Proper’s 5 evidence-backed supplements designed to help you fall asleep, stay asleep, and wake up refreshed...naturally.

There are 5-night doses of each to allow you time to experience the full benefits and decide which works best for you.

Discovery Trial Pack

$39.99 + $5 shipping