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Question · Everyday stress

Does magnesium help with stress?

Many say yes, going by Reddit owner reports: 41 of 50 rated comments from people who describe everyday stress or feeling overwhelmed describe a good experience with Magnesium, and 4 describe a poor one. That is self-reported experience, not proof that it works, and results vary from person to person.

Magnesium, Everyday stress	Owner comments
Rated comments in this context	50
Positive	41 (82%)
Negative	4 (8%)
Describe an unwanted effect	4
Context rating (small samples pulled to the average)	3.8

Magnesium (form not stated) overall: 4.1 from 438 owner comments in Reddit anxiety, stress and supplement communities, May 2026 to October 2026.

What the research says

Magnesium is a mineral the body uses in hundreds of enzyme reactions. Supplements come in many forms (oxide, citrate, glycinate and others) that differ in how much magnesium they contain and how well it is absorbed.^{[NIH Office of Dietary Supplements]}
A 2017 systematic review found the evidence on magnesium and subjective anxiety suggestive but of poor quality.^[PubMed]

Safety

The NIH upper limit for magnesium from supplements is 350 mg a day for adults; higher doses commonly cause diarrhea, nausea and abdominal cramping.^{[NIH Office of Dietary Supplements]}
Magnesium can reduce the absorption of some antibiotics (tetracyclines, quinolones) and bisphosphonates, so the NIH advises spacing the doses apart.^{[NIH Office of Dietary Supplements]}

Good experiences

4/5 Calming effectSide effects
“I used to have severe health anxiety and deal with stress daily, tried alot of stuff, Taurine in the morning and magnesium before bed helped mostly, I noticed less brain fog and more calm and focus during the day, idk is it directly…”

owner comment via r/Supplements · 2026-07-13 · 9 upvotes

4/5
“A normal serum magnesium result is reassuring, but it doesn't necessarily mean magnesium status is optimal.”

owner comment via r/Supplements · 2026-10-07 · 2 upvotes

4/5
“What helped me was targeting the source of my stress and ensuring I had a consistent pre-bedtime schedule (I take magnesium, always try to give myself at least 30 minutes with no screens or outside simulation to unwind before getting in bed).”

owner comment via r/sleep · 2026-10-14 · 7 upvotes

Poor experiences

2/5
“magnesium never made a huge difference for me when it came to emotional reactivity , but phosphatidylserine was one of the things Where I actually noticed a shift .”

owner comment via r/Nootropics · 2026-09-07 · 1 upvotes

2/5
“i feel you on the supplements not working, i've tried a few too, like magnesium and vitamin C, but i recently came across mycrobooster, as well as brands like aaron's and zenith, and they seem worth looking into for stress.”

owner comment via r/Stress · 2026-07-12 · 1 upvotes

How reports compare in other contexts

Context	Rated comments	Positive	Negative
Anxiety & worry	67	43	19
Low mood	32	21	10
Panic attacks	15	6	8
Physical tension	11	6	4

More on Magnesium

Talk to a doctor about new, severe or lasting symptoms, and to a pharmacist before combining supplements with medicines.