40 years of proven science to support living better, longer. 

● CLINICALLY TESTED INGREDIENTS   ● EST. 1977  87%   ● 0FCUSTOMERS REPURCHASE

KEY NUTRITION PER DAILY SERVING 

Each daily serving supplies 2 000 mg Magtein® (Magnesium L‑Threonate). Clinically‑studied brain‑targeted magnesium formula. Vegan, Non‑GMO and Gluten‑Free, no unnecessary fillers inside.

WHY MAGTEIN® IS DIFFERENT FROM ORDINARY MAGNESIUM 

Standard magnesium supplements have difficulty passing the blood‑brain barrier. The patented Magtein® L‑Threonate molecule is optimally absorbed into brain tissue, supporting mental clarity, recall and relaxation from inside the brain. 

40 Years Of Proven Science To Support Living Better, Longer 

The goal has always remained the same: to design superior dietary supplements that help empower individuals to take charge of their own health. Because Jarrow® science-driven formulas optimize what your mind and body need to move, think, and live at your best.

 Your body is the most advanced system you'll ever operate. 

We build a comprehensive range of science-first formulas to support that system, extending your healthspan so you can move, think, and live at your best.

SCIENCE FIRST

We Start With TheScience.

Every Jarrow formula begins with peer-reviewed research, not what's trending on social media. Our team reviews clinical studies to identify the ingredients, forms, and doses that actually work. If the science isn't there, the product doesn't ship. That's how you get formulas you can feel, not just formulas you can buy.

PURE ANDPOTENT

QUALITY OBSESSED

The Right Ingredients.
The Right Formula.
The Right Dose.

Bioavailability matters. We choose ingredient forms your body can actually use, like methylated B vitamins, chelated minerals, and clinically studied probiotic strains. Every formula is dosed at levels shown to be effective in research. Because what your body can use is the only thing that counts.

Scientific Advisory Board 

Our Scientific Advisory Board brings together world-class researchers, clinicians, and industry scientists spanning sleep medicine, circadian biology, gut microbiome science, nutritional biochemistry, and clinical nutrition. Together they shape our innovation strategy, validate the science behind our formulations, and ensure that every Jarrow® product is built on a foundation of rigorous, defensible evidence.

 

Helen J. Burgess, PhD 

Dr. Helen Burgess is a Professor of Psychiatry and Co-Director of the Sleep and Circadian Research Laboratory at the University of Michigan. ​

Her research examines basic sleep and circadian rhythm mechanisms as well as sleep and circadian rhythms in the context of various clinical disorders including alcohol use disorders, autism, bipolar disorder, chronic pain, depression, diabetes, gastrointestinal disorders, HIV, jet lag, migraine, shift work, sleep disorders and PTSD. She also studies how light and melatonin can be used to improve sleep and circadian adaptation to help optimize health and relieve symptom burden. ​

She has developed a method to facilitate accurate measurement of circadian timing in the home environment with appropriate measures of compliance. ​

At the invitation of the American Academy of Sleep Medicine, Dr. Burgess assisted in formulating the latest clinical practice guidelines for the treatment of circadian rhythm sleep-wake disorders.  ​

Dr. Burgess received her PhD from the University of Melbourne, Australia, and completed a postdoctoral fellowship at the University of South Australia and second fellowship at Rush University Medical Center in Chicago.​

Michael Grandner, PhD, MTR, DBSM,FAASM, FAHA, FSBSM 

Dr. Michael Grandner is the Director of the Sleep and Health Research Program at the University of Arizona, Associate Director for Behavioral and Translational Science at the Center for Sleep, Circadian and Neuroscience Research and the Director of the Behavioral Sleep and Circadian Medicine Clinic at Banner - University Medical Center in Tucson, AZ. Dr. Grandner is also a Professor of Psychiatry, Psychology, Medicine, Nutritional Sciences, and Clinical and Translational Sciences at the University of Arizona.​

In his work, Dr. Grandner specializes in transitional sleep research and behavioral sleep medicine, studying the treatment of insufficient sleep and sleep disorders through behavioral and other non-medication interventions including nutritional supplements. Dr. Grandner also focuses on downstream cardiovascular, metabolic, immunologic, cognitive, mental, and behavioral health outcomes associated with sleep and as well as upstream social, behavioral, environmental, and biological determinants of sleep and circadian health.​

Dr. Grandner received his PhD in Clinical Psychology at the University of California San Diego and San Diego State University. He also completed postdoctoral fellowships in behavioral sleep medicine and sleep and circadian neurobiology at the University of Pennsylvania and Philadelphia VA Hospital. He then completed a Masters degree in Translational Research at the Perelman School of Medicine at the University of Pennsylvania. He is an elected fellow of the American Academy of Sleep Medicine, the American Heart Association, and the Society of Behavioral Sleep Medicine.​

 Stephanie Stahl, MD, FAASM 

Dr. Stephanie Stahl is Medical Director at Indiana University Health Indianapolis Sleep Laboratory, Associate Professor of Clinical Medicine and Clinical Neurology and Director of the Sleep Medicine Fellowship Program at Indiana University School of Medicine in Indianapolis, IN.​

Her research focuses on the evaluation and management of sleep disorders, including obstructive and central sleep apnea, parasomnias, and sleep-related movement disorders; hypoglossal nerve stimulation; negative effects of obstructive sleep apnea in stroke risk and recovery; and REM sleep behavior disorder.​

Dr. Stahl completed medical school at Indiana University School of Medicine. She also completed an internal medicine internship at St. Vincent Hospital, Neurology residency at Indiana University School of Medicine and a Sleep Medicine fellowship at the Indiana University School of Medicine. Currently, she serves on several national committees, including Co-Chair of the American Academy of Sleep Medicine's Sleep Inter-Scorer Reliability Gold Standard Panel, Chair of the American Academy of Sleep Medicine's Education Committee, and Lead Co-Chair of the Purdue Alumni Medical Network Board. ​

Chris Winter, MD, DABSM, DABPN, FAASM 

Dr. Chris Winter is the owner of Charlottesville Neurology
and Sleep Medicine (CNSM) clinic and CNSM Consulting. He is the author of two books: The Sleep Solution: Why Your Sleep Is Broken and How To Fix It as well as The Rested Child: Why Your Tired, Wired or Irritable Child May Have A Sleep Disorder--And How To Help, hosts the Sleep Unplugged with Dr. Chris Winter podcast and is the host of the Sleep.com series Sleeping Around with Dr. Chris Winter.
His current research focuses on sleep and athletic performance, and he
works with numerous professional sports organizations to help athletes
optimize sleep. He's credited with coining the term circadian advantage
after studying the effects of travel on Major League Baseball teams.
Dr. Winter received his medical degree from Emory University, completed
his neurology residency as Chief Resident at the University of Virginia and his Sleep Medicine fellowship at the University of North Carolina in Chapel
Hill. He is board certified in sleep medicine by the American Board of Sleep Medicine, board certified in neurology by the American Board of Psychiatry and Neurology, and a
diplomate of both organizations. He is also a fellow of the American Academy of Sleep Medicine.

Emily Ho, PhDMicronutrients, Nutrient-Gene Interactions & Metabolism​ 

Dr. Emily Ho is the OSU Distinguished Professor of Nutrition in the College of Health at Oregon State University and the Endowed Chair and Director of the Linus Pauling Institute, a research institution promoting optimal health through research of phytochemicals and essential micronutrients.​

Dr. Ho’s research focuses on understanding the mechanisms by which nutrient status and healthy foods affect the initiation and/or progression of chronic diseases. Her work has helped drive dietary requirements and recommendations for micronutrients such as zinc for communities with susceptibility to poor nutrition, and she has interest in phytochemicals derived from cruciferous vegetables in cancer prevention. She has strong commitment to engaging and facilitating nutrition and diet-focused translational research projects with basic scientists, clinicians, policy-makers and communities.​

Dr. Ho received her PhD in Nutrition Sciences from Ohio State University and completed a postdoctoral fellowship at the University of California, Berkeley.​

From Research To Results 

HOW WE FORMULATE

Every formula goes through
a rigorous process before it
reaches you. Here's what
that actually looks like.

 

It Starts With A Question. 

What does the latest science say about how this ingredient works in the body? Our team reviews clinical studies, evaluates dosing, and identifies the most bioavailable forms, so the formula is built on evidence, not assumptions.

Designed For Your Body, Not The Label.

We formulate at cinically relevant doses using ingredient forms optimnized for absorption Complementary ingredients are paired to work together.
Because how a formula performs inside your body matters more than how it looks on a shelf.

Every batch. Every time.

Raw materials are tested for identity, purity, and potency before production begins Finished products are tested again Our in-house anaytical labs run full-spectrum analysis so nothing leaves our facility without verification.

RECOGNIZED

 Awards don't make the formula. 

 The formula earns the awards. 

2015

Better Nutrition Magazine 
Probiotic Product of the Year

2017

Nutra Ingredients
Probiotic Product of the Year

2018

Nutra Ingredients
Probiotic Product of the Year

2019

Taste for life 2019 essential supplements award
Probiotic Product of the Year

2023

Forbes Health
Best Probiotic Supplements

2026

Sunset Wellness & Beauty Awards
Best Wellness & Supplements

HOW TO TAKE MAGMIND® DAILY 

Adults take total 3 capsules each day. Suggested split dosage: 2 capsules in daytime plus 1 capsule one hour before bedtime. Can be taken with or without meals. 90‑count bottle = 30‑day supply.

SHOP NOW