For the evening that is yours
Calm & Sleep
Calm by day. Rest by night.*
Ashwagandha Plus · Magnesium Glycinate
$52.00 Bought separately: $58.00 Save $6Launch price
See the protocol: Calm & Sleep
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Magnesium(from 2,500 mg Magnesium Glycinate) | 275 mg | 65% |
Other ingredients: Hypromellose (capsule), Magnesium Stearate, Silicon Dioxide, Rice Flour.
For the evening that is yours
Magnesium Glycinate
275 mg elemental magnesium · 90 capsules
- Third-party lab tested
- GMP-certified facility
- Vegan
- Gluten-free
- Non-GMO
+6 moreShow less
- Lactose-free
- Corn-free
- All natural
- Allergen-free
- Hormone-free
- Antibiotic-free
Goals: Calm days, better nights · Daily essentials
For long days and calmer evenings. Magnesium is the mineral your nerves and muscles rely on to relax, and 48% of Americans get less than they need from food.* Glycinate is a gentle form, bound to the amino acid glycine, and in a 2025 trial it improved sleep more than placebo on the trial’s main measure.* Three evening capsules give you 275 mg of elemental magnesium.
Supports muscle relaxation and normal nerve function*Established
What it supports
- Nerve function*
- Bone & muscle*
- Sleep support*
Your ritual
For the evening that is yours
- Set out three capsules and a glass of water, 30 to 60 minutes before bed.
- Dim the lights and put the phone face down.
- Take them slowly.
That is the day, set down.
The moment is when you take it. The evidence is below.
You know your days best. We bring the evidence.
One active ingredient, at full strength
- 275 mg elemental magnesium (65% DV) from 2,500 mg magnesium glycinate
- 90 capsules, a 30-day supply
- Gentle on the stomach
- Made in the USA in an independently audited, GMP-certified facility, with globally sourced ingredients
- Third-party lab tested
For your high standards
- Our dose: 275 mg a day. In human studies: 250 to 500 mg a day.
- Evidence graded Established, with the key studies on this page
- Quality we check before we sell: we review the quality documents for every product, and it is third-party lab tested
- 60-day first-order guarantee. How it works
- Real people: write to hello@cellovi.com and a person replies within 24 to 48 hours, Monday to Friday
| Ingredient | Amount Per Serving | % Daily Value |
|---|---|---|
| Magnesium(from 2,500 mg Magnesium Glycinate) | 275 mg | 65% |
Other ingredients: Hypromellose (capsule), Magnesium Stearate, Silicon Dioxide, Rice Flour.
What the evidence says, plainly
Consistent results across many well-run human trials. As close to settled as nutrition gets.
Supports muscle relaxation and normal nerve function
Established- Ours
- 275 mg a day
- In human studies
- 250 to 500 mg a day
Graded on magnesium’s established role in muscle and nerve function. Research on sleep quality is growing too, including a 2025 placebo-controlled trial at a similar dose.*
Key studies
- NIH Office of Dietary SupplementsGovernment fact sheet Magnesium fact sheet for health professionals, updated January 2026. Magnesium is a cofactor in more than 300 enzyme systems, including those that run muscle and nerve function.
- Schuster et al., 2025Randomized, double-blind, placebo-controlled 155 adults with poor sleep took 250 mg a day for 4 weeks. Sleep improved more than with placebo on the trial's main measure, with fewer side effects than placebo.
Every study behind this grade, explained · Reviewed October 2026 by the Cellovi team
Where it sits in your day
Evening
Magnesium Glycinate
3 capsules once daily. Most people take them in the evening as part of winding down.
What to expect, and when
- Each eveningIn the 2025 trial, people took it 30 to 60 minutes before bed.
- Week 4In that trial, sleep improved more than with placebo on the trial's main measure.* Give it at least 4 weeks of daily use.
Timelines come from the human studies. What counts is consistency: in one study of 96 adults, a new daily habit took 66 days on average to feel automatic (Lally et al., 2010). Pair it with something you already do every day. Your first order comes with our 60-day first-order guarantee. How it works
Who it is for
Anyone whose days run long and nights run short, and adults 30+ who want a daily foundation.
Before you start
Interactions and cautions
Ask your pharmacist or doctor first if you take:
- bisphosphonates for bone: take them at least 2 hours apart from magnesium.
- tetracycline or quinolone antibiotics: take the antibiotic 2 hours before, or 4 to 6 hours after, magnesium.
- diuretics or long-term acid-reducing medicines (PPIs), which can change magnesium levels.
Check with your doctor first if you:
- have kidney disease, because the kidneys clear extra magnesium
- are pregnant, nursing or under 18
Not a complete list. Show your pharmacist everything you take, including other supplements. Sources: NIH Office of Dietary Supplements, magnesium.
Label warnings and storage
If you take quinolone or tetracycline antibiotics, take them at least 2 hours before or 4 to 6 hours after magnesium. Keep osteoporosis medicines (bisphosphonates) at least 2 hours apart. Consult your doctor before use if you have kidney disease, are pregnant, nursing, under 18, or have a medical condition.
Do not exceed the recommended dose. Keep out of reach of children. Store in a cool, dry place. Do not use if the safety seal is damaged or missing.
Report a reaction: safety@cellovi.com
- GMP-certified facilityAudited, third-party lab tested
- Made in the USA, with globally sourced ingredients
- Real doses, on the labelDosed by the research
- Free US shippingOn $50 or more
What you get, and what you don’t
The supplement aisle runs on small print. Here is ours, in large print.
| What matters | Cellovi Magnesium Glycinate | Many supplement brands |
|---|---|---|
| Evidence | Cellovi Magnesium Glycinate: Every claim graded Established, Growing or Frontier | Many supplement brands: Claims are rarely graded for strength of evidence |
| Proof | Cellovi Magnesium Glycinate: Key studies on the page: who took part, how much they took, what changed | Many supplement brands: Some pages link no studies or don’t state amounts |
| Label | Cellovi Magnesium Glycinate: Supplement Facts as text you can read | Many supplement brands: Some show them only as an image |
| Your day | Cellovi Magnesium Glycinate: When to take it, with a simple ritual to make it stick, and a full-day guide | Many supplement brands: Most give a dose, not a place in your day |
| First order | Cellovi Magnesium Glycinate: 60-day first-order guarantee | Many supplement brands: Many take back only unopened bottles, or charge a fee |
Based on our review of 12 supplement brands’ websites, October 2026. How our guarantee works
Reviews
New, so no reviews yet
Here is what you can check instead. Every claim on this page has an evidence grade and a link to the study behind it. We won’t fill this space with borrowed praise.
We started Cellovi because shopping for supplements meant wading through big promises, hidden doses and claims with no study in sight. So we built the brand we wanted to buy from.
Your reviews come next, and we’ll read every one.
Be among the first to review
We ask every buyer once, after delivery. Only verified buyers post, every rating shows from one star to five, our team and families never review, and nothing is offered in return.
Questions, answered
Glycinate is magnesium bound to the amino acid glycine. It is gentle on the stomach, which makes it an easy evening habit. Oxide is cheaper but less well absorbed and more likely to loosen stools.
It isn’t a sedative. It supports your body’s own relaxation and sleep.*
It takes 2,500 mg of magnesium glycinate to deliver 275 mg of magnesium, which needs three capsules.
Read Magnesium forms, compared and Your day, built.
Better together
Magnesium Glycinate is part of the Calm & Sleep Protocol, a 2-product routine priced below buying them one by one.
Magnesium Glycinate$29.00
Feel like it.