What is bisglycinate
Magnesium bisglycinate is magnesium chelated to two molecules of the amino acid glycine. The chelation lets it absorb through dedicated amino acid transport pathways instead of competing with calcium and other minerals in the gut — which is the bottleneck that limits cheaper forms like oxide.†
Published research consistently shows higher bioavailability for chelated magnesium without the laxative side effect that makes most men quit before they correct the deficiency. JevityRx Magnesium Glycinate delivers 400mg of elemental magnesium as bisglycinate in vegan capsules, stacked with glycine, vitamin B6, and L-theanine. 60 capsules per bottle = 30-day supply.
Why men take it
If you fall asleep fine but wake at 3am with your mind racing, if you train hard and recovery isn't keeping up, if cramps wake you up at night — those are classic markers of magnesium deficiency.
Stress, caffeine, alcohol, and intense training accelerate depletion. NHANES data shows roughly half of US adults consume below the daily recommended intake. Bisglycinate is the form that actually corrects the gap — the one your body recognizes and uses without the GI side effect.†
Studied applications
- Supports HPA-axis regulation and cortisol response†
- Studied for sleep onset and deep sleep†
- May support muscle recovery and post-training repair†
- Studied for muscle cramp and tension support†
- Required cofactor for 300+ enzymatic reactions in the body†
- Heavy-metal tested every batch
How to use
Take 2 capsules 30-60 minutes before bed. Magnesium loads best in the evening, when sleep and recovery pathways are primed. Unlike peptides, magnesium doesn't need to be cycled — daily use is the protocol.
Guarantee
All JevityRx orders are backed by a 90-day money-back guarantee for subscribers and 30-day for monthly. If it doesn't earn its place in your routine, contact us for a full refund — no questions asked, no return required.
JevityRx Magnesium Glycinate
The mineral your body burns through under stress.
High-bioavailability magnesium bisglycinate at 400mg elemental — the form that doesn't send you to the bathroom at 6am, and actually fixes the deficiency. Stacked with glycine, B6, and L-theanine on the same calming pathway.†
Magnesium, by the numbers.
NHANES dietary intake data, 2017-2018. Boyle NB, et al. Nutrients, 2017;9(5):429. Schuette SA, et al. JPEN, 1994. References to peer-reviewed bioavailability and intake research.
How to take it.
Take 2 capsules 30-60 minutes before bed. Daily, not cycled. Most men notice deeper sleep within the first week.
Take 2 capsules
One serving is 2 capsules delivering 400mg elemental magnesium plus the calming stack. 60 capsules = 30-day supply.
30-60 minutes before bed
Magnesium, glycine, and L-theanine work on sleep onset. Taking it before bed gives the stack time to load as you wind down.
Run it daily — no cycling
Magnesium stores rebuild over 2-3 weeks. Sleep changes show up first, then stress regulation, then cramp reduction. The 90-day plan is built around this timeline.
How the formula targets the Cortisol Brake.
Magnesium bisglycinate plus three compounds chosen to layer on the exact same calming and recovery pathway. Same mechanism. Four angles.
Magnesium Bisglycinate
Chelated form bound to glycine. Absorbs through amino acid transporters at roughly 8x the rate of oxide, without the laxative effect. The form that actually corrects the deficiency.†
L-Glycine
Calming amino acid that pairs with magnesium for sleep onset and HPA-axis regulation. The other half of the bisglycinate molecule, dosed extra to load the same pathway twice.†
Vitamin B6 (P-5-P)
Active coenzyme form, not the cheaper pyridoxine HCl. Required cofactor for magnesium uptake into cells. Without it, the magnesium doesn't end up where it's supposed to go.†
L-Theanine
Amino acid from green tea. Promotes alpha brain wave activity. Calms the racing-mind aspect of low-magnesium stress response without sedating you the next day.†
Why most magnesium doesn't work.
The form matters more than the dose. Magnesium oxide absorbs at 4-10% and acts as a laxative — which is why most men quit before they ever correct the deficiency. Bisglycinate at the clinical dose is the difference between a bottle that works and a $15 placebo.
JevityRx Magnesium Glycinate
- Bisglycinate (chelated) form — ~8x absorption vs oxide
- 400mg elemental magnesium per serving
- Stacked with glycine, B6, and L-theanine on the same pathway
- No GI distress — built for long-term daily use
- USA-manufactured in cGMP facility
- 90-day money-back guarantee
Other Brands
- Magnesium oxide — 4-10% absorption rate
- Underdosed at 100-200mg elemental
- Solo magnesium, no synergistic actives
- Laxative effect that drives most users to quit
- Unverified offshore sourcing
- 14- or 30-day return windows
90 days. Or your money back.
The longest guarantee in supplements.
The Cortisol Brake takes 2-3 weeks to feel — your magnesium stores rebuild before your sleep changes. Stress regulation and muscle cramp reduction build over the first month. We give you the full 90 days. No return required, no questions asked. Subscriber-only benefit.
8,000+ men sleeping deeper on the Cortisol Brake.
Read what real customers say after 4-8 weeks on JevityRx Magnesium Glycinate.
"Lifted for 12 years and never touched magnesium because the cheap stuff did nothing for me. This one I felt in week one. Sleep got deeper, day-after-leg-day stiffness backed off. Wish I'd started sooner."
"My wife noticed before I did. Said I'd stopped tossing around at 2am. Checked my watch and she was right. Fewer wake-ups, falling back asleep faster on the nights I do wake. She's taking it now too."
"I'm an internist and I was skeptical of the bisglycinate marketing until I read the absorption studies. Started taking it myself before recommending it to patients. My sleep latency dropped in the second week. It's now the form I tell my patients to look for."
"Didn't think much would change in the first month. Then my wife said I'd been less reactive. That was my tell. Calmer at the end of the day, easier on the kids. Worth the price for that alone."
"Two kids under five. Used to bolt awake at 3am with work running through my head. Three weeks on this and I'm staying asleep until the alarm. Single biggest change in my life this year."
"Run 40+ miles a week. Leg cramps in the middle of the night were a regular thing. Started JevityRx a month ago and they've stopped. HRV is up too. This stays in the routine."
Common questions.
What is "The Cortisol Brake"?
It's the name we use for what magnesium actually does. Magnesium regulates HPA-axis activity — the hormonal cascade that produces cortisol when you're under stress — and it's required to convert glutamate (the excitatory neurotransmitter) into GABA (the calming one). When magnesium runs low, both systems get noisier: cortisol stays elevated, GABA falls, and you end up wired-but-tired. The Cortisol Brake is what magnesium does to that cascade when it's at sufficient levels.†
Why bisglycinate instead of oxide or citrate?
Magnesium oxide is the form in most cheap supplements and gas station bottles. It absorbs at about 4-10% in the gut, with the rest acting as a laxative. Citrate is better (15-25%) but still causes GI distress for many men. Bisglycinate is magnesium chelated to glycine — it absorbs through amino acid transporters at much higher rates without the bathroom side effect. That's why men actually stay on it long enough to correct the deficiency.†
What's the difference between the 30-day and 90-day plan?
Same product. The 90-day plan saves 33% (vs 23% on monthly), includes access to the JevityRx 90-Day Sleep Reset program, and is backed by our 90-day money-back guarantee. Most men start there because magnesium stores rebuild over 2-3 weeks and the deeper effects compound across a full month.
Is magnesium safe for daily use?
Magnesium glycinate has a strong safety profile and is intended for long-term daily use — unlike peptides or adaptogens that need cycling. The most common side effect of magnesium (loose stools) is rare with the bisglycinate form. If you have kidney disease or are on prescription medication, consult your physician first.
Can I take it with other supplements?
Magnesium pairs well with vitamin D, K2, zinc, and most multivitamins. Take it separately from calcium (which competes for absorption) and at least 2 hours apart from levothyroxine or quinolone antibiotics. If you're on prescription medication, check with your physician.
How long until I notice a difference?
Most men notice deeper sleep within 5-7 days. Stress regulation, mood, and muscle cramp reduction build over 2-4 weeks. Magnesium stores in the body take 2-3 weeks to fully rebuild — which is why we offer a 90-day guarantee instead of a 14-day return window.
Will it make me drowsy during the day?
No. Magnesium doesn't sedate you — it removes the deficiency that's keeping you wired. The glycine and L-theanine in the stack are calming but non-sedating. Taken 30-60 minutes before bed, the effect lands at the right time.
Can I cancel anytime?
Yes. Skip, pause, or cancel any subscription from your account dashboard. No retention calls, no friction.
Do you accept HSA/FSA?
Yes. JevityRx Magnesium Glycinate qualifies for HSA/FSA reimbursement when paired with a Letter of Medical Necessity. We provide one through our partner platform at checkout. Most men save an average of 30%.
† These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
* Individual results vary. Testimonials and reviews reflect individual experiences and are not guaranteed outcomes.
References: NHANES dietary intake data, 2017-2018. Boyle NB, et al. The effects of magnesium supplementation on subjective anxiety and stress — a systematic review. Nutrients. 2017;9(5):429. Schuette SA, et al. Bioavailability of magnesium diglycinate vs magnesium oxide. JPEN J Parenter Enteral Nutr. 1994;18(5):430-5.