Best Magnesium for Sleep? Why I Use Magnesium Glycinate
(And What I Learned About Hormones & Sleep)
A few months ago, I was exhausted.
Sleep felt off.
My blood sugars were behaving in ways that didn’t feel typical for me.
And I had recently increased my progesterone dose.
At the time, my practitioner suspected I might be more estrogen dominant. My day-21 labs had come back on the higher-than-expected side, and I was struggling to release weight, both of which can point toward a ratio imbalance in perimenopause.
So increasing progesterone made sense.
But shortly after, I noticed:
Heavier, cyclical fatigue that would hit every two weeks.
Sleep that didn’t feel restorative
More variability in my blood sugars
I assumed I was deficient in something, but I also knew I’d been pushing myself working a full time job and churning in the evenings working too late on building Midlife T1D. But, I’d heard many good things about magnesium for overall health and better sleep I figured it couldn’t hurt to give it a try.
What I Recently Learned About Progesterone, Estrogen, and Sleep
In a group coaching call with Melissa Slemp of Type 1 in Midlife, she shared something that reframed how I understand sleep in perimenopause:
Progesterone often helps you fall asleep.
Estrogen plays a larger role in helping you stay asleep.
That nuance mattered.
So, I dug into this topic further and discovered progesterone increases GABA activity in the brain, which promotes calm and can feel sedating.
Estrogen supports serotonin, melatonin regulation, body temperature, and sleep stability.
Recent research, including insights shared by Stanford’s Lifestyle Medicine team, explains that in perimenopause, fluctuating estrogen levels can disrupt sleep architecture, body temperature regulation, and the body’s circadian rhythm.
Magnesium also plays a role in glucose metabolism and insulin sensitivity, which is why magnesium status is often discussed in relation to blood sugar regulation.
Research from Health.com shows magnesium influences blood sugar control and insulin sensitivity.
When estrogen fluctuates or declines during perimenopause, many women experience:
- 3am wake-ups
- Night sweats
- Fragmented sleep
So while progesterone can help you fall asleep, estrogen plays an important role in maintaining sleep through the night.
Stanford Lifestyle Medicine has a helpful overview explaining how hormonal changes during perimenopause can disrupt sleep cycles and circadian rhythms. You can read more here:
At that point, though, my situation felt more layered.
In fact, in a previous post about adjusting my progesterone dose, I shared how I later discovered that my progesterone dose had likely been too high and needed to be reduced. But when I was standing in that magnesium aisle, I didn’t understand that yet. I also didn’t fully appreciate how estrogen and progesterone work together to influence sleep and overall balance.
All I knew at the time was that my nervous system felt overwhelmed.
So I went looking for magnesium.
The Magnesium Aisle Surprise
When I walked into Natural Grocers (Vitamin Cottage), I expected shelves full of magnesium glycinate.
Instead, most of what I saw was:
- Magnesium citrate
- Magnesium oxide
- Magnesium blends
True magnesium glycinate? Only one or two options.
That surprised me.
Because when your goal is calming the nervous system, not stimulating digestion, glycinate is typically the form most recommended.
Why I Decided to Add Magnesium To My Long-Term Supplement Essentials
At first, I knew very little about magnesium other than it’s calming benefits for sleep and stress, but after learning even more, I discovered magnesium plays a role in over 300 biochemical reactions in the body, which is one reason it’s often considered a foundational nutrient.
Many adults don’t get enough magnesium through diet alone, especially during periods of high stress, poor sleep, or hormonal changes.
Supporting healthy magnesium levels can help with several important functions in the body, including:
Magnesium also plays an important role in how brain cells communicate and how new neural connections form, processes that are essential for learning and memory.
Some research suggests that people with higher magnesium intake may have lower risk markers associated with cognitive decline later in life.
While magnesium isn’t a cure-all, maintaining healthy levels appears to support long-term neurological health.
For those of us navigating midlife hormones, especially while managing Type 1 diabetes, supporting the nervous system, metabolic balance, sleep quality, and brain health becomes even more important.
That’s why magnesium has become one of the supplements I view as a long-term foundational nutrient, not just a short-term fix.
What is the Best Magnesium for Sleep? (and What to Look for When Buying It)
Magnesium glycinate (also called bisglycinate) is magnesium bound to glycine, an amino acid known for its calming properties.
Here’s why that mattered to me:
I wasn’t looking for digestive stimulation.
I was looking for calm.
Why I Didn’t Choose Citrate or Oxide
Magnesium Citrate
Magnesium Oxide
Magnesium Sulfate (Epsom Salts)
Epsom salts are not typically used as a primary magnesium supplement, since magnesium absorption through the skin is still debated in research.
The One I Ended Up Purchasing
This is the one I chose:
Solaray High Absorption Magnesium Glycinate – 350 mg per serving.
There were very few glycinate options available that day, and this one checked the boxes:
- Clearly labeled as magnesium bisglycinate
- 350 mg per serving
- Lab verified
- Non-GMO
- Straightforward ingredient list
It wasn’t flashy.
It was clearly labeled and transparent. That mattered to me.
What I Looked for on The Label
When you flip the bottle over, here’s what to confirm:
✔ “Magnesium (from Magnesium Bisglycinate)” clearly stated
✔ Elemental magnesium amount listed (typically 200–400 mg daily total)
✔ Minimal fillers
✔ Transparent ingredient list
This label confirmed 350 mg from magnesium bisglycinate plus black pepper extract to support absorption.
Simple. Clear. Appropriate for my goal.
What Form is Best to Purchase?
If your goal is:
Sleep support
Nervous system calming
Muscle relaxation without digestive stimulation
Magnesium glycinate is generally the better option.
(Add in why citrate is the cheaper option and why the elemental bisglycinate matters)
If your goal is constipation relief, magnesium citrate may be more appropriate.
Choose the form based on the outcome you want.
How did I figure all of this out? I gotta be honest! when I walked in Natural Grocers, I felt confused and overwhelmed by so many options and I had no idea was the best one.
So, something dawned on me, and I thought, “Maybe Chatgpt can help!”
I took a picture of all the options on the shelf and it was a full wall high and it explained why I should go for Glycinate and why the elemental contents mattered, shew! (Get help rewriting this part).
The Bigger Lesson
Magnesium supported my nervous system during a stressful season but it also reminded me that midlife symptoms rarely have a single cause.
Midlife symptoms are layered:
Hormones
Stress
Blood sugar variability
Lifestyle patterns
Before adding another supplement, I’m learning to ask:
Did I recently adjust a hormone?
Am I overextending myself?
Is my sleep architecture disrupted hormonally?
I’ll share an update after my next practitioner visit.
Because in midlife, especially with Type 1 diabetes,context matters just as much as the supplement itself.
Save This Guide for Later
Magnesium Quick Tips Guide
If you’re standing in the supplement aisle wondering which magnesium to choose, here’s a quick recap.
Magnesium Glycinate
Magnesium Citrate
Magnesium Oxide
Magnesium Oxide
Understanding the differences between these forms can make choosing the right magnesium supplement much easier.
