Crear Co., Ltd.

Dreamin | Japanese Sleep Supplements with Magnesium & Tryptophan

Premium Japanese sleep supplements combining 420mg L-Tryptophan with magnesium and 6 essential vitamin cofactors to support natural serotonin and melatonin production for deep, restorative rest.

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Standard: 10 - 14 days via ePacket Light · Free from US$60

$36.85 USD

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High-Potency Tryptophan Formula

Contains 420mg of L-Tryptophan per daily serving—the essential amino acid your body needs to produce serotonin and melatonin for quality rest.

Complete Cofactor Profile

Includes Vitamin B6 (1.4mg), Niacin (22.8mg), and Magnesium (164mg)—vital cofactors that ensure tryptophan is efficiently converted into sleep-supporting hormones.

Certified Nutritional Functional Food

Six components (B1, B6, B12, D, Niacin, Magnesium) meet Japan's Ministry of Health standards, making this an officially certified functional food.

Quality You Can Trust

Manufactured in a GMP-certified facility in Japan with every tablet visually inspected. No preservatives, flavoring, or sweeteners added.

Best For

Those experiencing restless nights, difficulty falling asleep, daytime fatigue, or anyone seeking natural support for their sleep-wake cycle without habit-forming ingredients.

Proven in Japan

Achieved #1 ranking in Rakuten's Amino Acid category. Developed by Crear Co., Ltd. specifically for Japanese consumers seeking evidence-based rest support.

If you struggle to feel fully awake or refreshed even after a full night's sleep, and want natural support for deeper rest quality.

If you experience interrupted rest or difficulty falling into a natural, deep slumber without relying on habit-forming sleep aids.

If you're seeking a natural alternative to harsh sleep medications and prefer evidence-based nutritional support for better rest.

If you want to balance your mood and manage daily stress through better hormonal health using amino acid supplementation.

If your modern lifestyle or irregular work schedules have disrupted your natural circadian rhythm and sleep-wake patterns.

If you want a high-potency tryptophan supplement backed by essential vitamin cofactors like magnesium and B6 for maximum effectiveness.

If you find yourself feeling foggy during the day and struggle to maintain mental clarity due to poor sleep quality.

If you value Japanese quality standards and want a GMP-certified supplement with fully disclosed ingredient amounts.

1

Supports Natural Melatonin Production

L-Tryptophan is an essential amino acid that your body converts to serotonin, then to melatonin—the hormone that regulates your sleep-wake cycle. Unlike supplements containing synthetic melatonin, Dreamin provides the building blocks for your body to produce its own natural sleep hormone.

Essential amino acid pathway

2

Optimizes Serotonin Synthesis with Magnesium

Many sleep supplements contain magnesium alone, but Dreamin combines it (164mg) with Vitamin B6 (1.4mg) and Niacin (22.8mg)—the complete cofactor trio required for efficient serotonin production. This comprehensive approach ensures tryptophan is converted effectively.

Research-backed formulation

3

Promotes Refreshed Mornings Without Grogginess

Because Dreamin supports your body's natural biology rather than sedating you artificially, users report waking up clearer and more refreshed. The formula is designed to work with your circadian rhythm, not override it.

Consumer validated

4

Clean, Transparent Formulation

Dreamin contains no preservatives, artificial flavoring, or sweeteners—and no unpleasant aftertaste common in sleep supplements. All ingredient amounts are fully disclosed, so you know exactly what you're taking.

100% additive-free

The Tryptophan → Serotonin → Melatonin Pathway

L-Tryptophan is one of the nine essential amino acids your body cannot produce on its own. When consumed, tryptophan crosses the blood-brain barrier and is converted first to 5-HTP, then to serotonin (the "happiness hormone"), and finally to melatonin (the "sleep hormone") as darkness falls.

Dreamin provides 420mg of high-purity L-Tryptophan—an optimal dose that supports this natural conversion process without the risks associated with excessive amounts.

Complete Cofactor Support for Serotonin Synthesis

Tryptophan alone isn't enough to produce serotonin efficiently. Your body requires specific vitamin and mineral cofactors:

Vitamin B6 (1.4mg) binds with tryptophan to create serotonin
Niacin (22.8mg) prevents tryptophan from being diverted to other pathways
Magnesium (164mg) activates the enzymes needed for serotonin synthesis

This is why basic tryptophan powders often fail—they lack these critical cofactors.

Thoughtfully Designed Without Sleep-Timing Conflicts

Unlike many sleep supplements, Dreamin intentionally excludes GABA, Glycine, and Theanine. Why?

These ingredients are typically recommended for consumption immediately before bed, while tryptophan takes approximately 15 hours to convert to melatonin. Combining them in one supplement creates timing conflicts that can reduce effectiveness.

Dreamin focuses on supporting daytime serotonin production so your body naturally produces melatonin when you need it at night.

Certified Nutritional Functional Food—Dreamin is an officially certified Nutritional Functional Food in Japan. Six components—Vitamin B1, B6, B12, Niacin, Vitamin D, and Magnesium—meet the strict standards set by Japan's Ministry of Health, Labour and Welfare.

Melatonin Production Declines with Age—Research shows that melatonin production naturally decreases as we age, helping explain why sleep quality often worsens with age and why supporting the body's natural melatonin production pathway becomes increasingly important.

A Note on Evidence: We present research on ingredients, not specific product claims. Individual results may vary. This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Ingredient Research Highlights

L-TRYPTOPHAN

L-Tryptophan is an essential amino acid that serves as the sole precursor to serotonin in the brain. Research indicates tryptophan supplementation may support mood and sleep quality by increasing serotonin availability.

Amino acid metabolism research

MAGNESIUM

Magnesium plays a crucial role in over 300 enzymatic reactions in the body, including those involved in serotonin synthesis. Studies suggest magnesium supplementation may support relaxation and sleep quality.

Mineral metabolism research

The Story

About Brand Story

Crear Co., Ltd.

Crear Co., Ltd. — established in 2000 in Tokyo — is a wellness brand specializing in science-backed functional foods and supplements. The company focuses on addressing modern health challenges through carefully formulated products manufactured in GMP-certified Japanese facilities.

Their flagship supplement "Dreamin" targets Japan's sleep deprivation crisis by combining 420mg of L-tryptophan — essential for producing serotonin and melatonin — with six nutritional functional ingredients including Vitamin B6, niacin, and magnesium. Featured in Tarzan and bis magazines, Dreamin is completely additive-free with no flavorings, preservatives, or sweeteners. Crear also produces cognitive-support products including Japan's first trigonelline-infused drip coffee.

Japan's supplement industry operates under some of the world's strictest quality standards. Combined with a cultural dedication to craftsmanship and centuries of wellness traditions, Japanese supplements represent a level of quality that's difficult to find elsewhere.

Rigorous Quality Standards

Japanese regulations require comprehensive testing at every stage of production, with standards that often exceed international requirements.

GMP-Certified Manufacturing

All our products come from facilities that meet Japan's strict GMP (Good Manufacturing Practice) certification requirements.

Centuries of Tradition

Many Japanese supplements draw on ingredients and formulations refined over generations, combining ancient wisdom with modern science.

Transparent Sourcing

Japanese manufacturers maintain complete traceability, so you know exactly where every ingredient comes from.

Learn more

Take 5 tablets daily as a single serving with water or lukewarm water. For best results, consume 30 to 60 minutes before your planned bedtime.

This timing allows the active ingredients to be absorbed and begin supporting your natural rest cycle.

Use daily for at least 30 days to allow your body to stabilize its natural rhythm. Do not exceed the recommended daily intake of 5 tablets.

Tips for Best Results

Take at the same time each evening to establish a consistent routine
For optimal absorption, take with water rather than caffeinated beverages
Maintain consistent sleep and wake times to support your circadian rhythm
Avoid bright screens 1 hour before bedtime to support natural melatonin production
Store in a cool, dry place away from direct sunlight and high humidity
Allow 2-4 weeks for noticeable improvements; optimal results often appear after 30+ days of consistent use

420mg

L-Tryptophan

Essential amino acid, serotonin precursor

164mg

Magnesium

Mineral cofactor for serotonin synthesis

22.8mg

Niacin

B-vitamin preventing tryptophan diversion

Ingredients: Hydrogenated Starch Hydrolysate (Domestic Production), Selenium-containing Yeast, Zinc-containing Yeast, Iron-containing Yeast, Vegetable Oil containing Vitamin E / L-Tryptophan, Magnesium Oxide, Crystalline Cellulose, Eggshell Calcium, HPC (Hydroxypropyl Cellulose), Calcium Stearate, Fine Silicon Dioxide, Niacin, Vitamin B1, Vitamin B6, Vitamin C, Vitamin A, Vitamin D, Vitamin B12

Allergen Information: If you have food allergies, please check the ingredients before consuming.

Age Restriction

Not intended for use by minors or individuals under the age of 18.

Drug Interactions

Consult a physician before use if taking antidepressants (SSRIs/MAOIs) or sedative medications. Tryptophan can interact with these drugs.

Pregnancy & Nursing

Please consult your healthcare provider before use if pregnant or lactating.

Safety Warning

May cause drowsiness; do not operate heavy machinery or drive after consumption.

Medical Conditions

If you have a diagnosed medical condition, seek professional advice before starting supplementation.

Dosage

Do not exceed the recommended daily intake of 5 tablets.

Discontinue Use

Discontinue use and consult a doctor if any unusual physical reactions or sensitivities occur.

Storage

Store in a cool, dry place away from direct sunlight and high humidity. Keep out of reach of children and pets.

Product Name

Dreamin: Japanese Sleep Supplements with Magnesium & Tryptophan

Brand

Crear Co., Ltd.

Contents

150 tablets

Serving Size

5 tablets

Servings Per Container

30 servings

Net Weight

45g (300mg per tablet)

Form

Small, circular tablets

Country of Origin

Japan

Manufacturing

GMP Certified Facility

What are the best sleep supplements with magnesium?

The best sleep supplements with magnesium combine it with complementary ingredients that support the full sleep-hormone pathway. Look for products that include magnesium alongside Vitamin B6 and tryptophan—the precursor to serotonin and melatonin.

Dreamin provides 164mg magnesium with 420mg tryptophan and essential B-vitamins for comprehensive support.

Is magnesium for sleep supplement safe to take every night?

Yes, magnesium-based sleep supplements like Dreamin are generally safe for nightly use when taken as directed. Unlike pharmaceutical sleep aids, Dreamin is non-habit forming and works by supporting your body's natural processes.

However, consult your healthcare provider if you have specific health concerns.

How much tryptophan is in each daily serving?

Each 5-tablet serving delivers 420mg of high-purity L-Tryptophan. This potent dosage is specifically balanced with Magnesium and B-vitamins to ensure maximum conversion into the 'rest hormones' your body needs.

Does Dreamin contain actual melatonin or sleeping drugs?

No, Dreamin is a 100% drug-free nutritional supplement. It provides L-Tryptophan, a natural amino acid that your body uses to produce its own melatonin, promoting a safer, more sustainable rest pattern rather than relying on external melatonin.

What is the best time of day to take Dreamin?

For optimal results, take five tablets with water approximately 30 to 60 minutes before your planned bedtime.

This timing allows the active ingredients to be absorbed and support your natural rest cycle.

Can I take this if I am on antidepressant medication?

If you are currently taking SSRIs, MAOIs, or other mood-regulating medications, you must consult your doctor before use. Tryptophan can interact with these drugs, and professional medical guidance is necessary for safety.

Will I feel groggy or 'hungover' the next morning?

No, because Dreamin supports your natural biology rather than sedating you, most users report waking up feeling clearer and more refreshed without the heavy, lingering grogginess associated with synthetic sleep aids.

What makes Dreamin different from basic tryptophan powders?

Dreamin is a complete 'Nutritional Functional Food.' It includes six essential vitamins and minerals that act as cofactors, ensuring the tryptophan is actually converted into serotonin and melatonin rather than wasted.

Basic tryptophan powders lack these critical supporting nutrients.

Why doesn't Dreamin contain GABA or Glycine like other sleep supplements?

Dreamin intentionally excludes GABA, Glycine, and Theanine because these ingredients are recommended for consumption immediately before bed, while tryptophan takes approximately 15 hours to convert to melatonin.

Combining them creates timing conflicts that reduce effectiveness. Dreamin focuses on the tryptophan-serotonin-melatonin pathway exclusively.

Where is Dreamin manufactured?

Dreamin is proudly manufactured in Japan in a GMP-certified facility. Every tablet is visually inspected, and the product adheres to the strictest quality control standards to ensure purity, safety, and effectiveness.

Dreamin | Japanese Sleep Supplements with Magnesium & Tryptophan