Magnesium
Mg, Magnesium glycinate, Magnesium bisglycinate, Magnesium citrate, Magne B6, Magnesium malate, Dimagnesium malate, Magnesium taurate
Forms: Glycinate (bisglycinate) is gentlest on the gut; citrate absorbs better than oxide but often loosens stools. Malate, taurate, threonate, lactate, gluconate, aspartate and orotate are other supplement forms without proven advantages. Oxide, hydroxide, carbonate and sulfate act mainly as laxatives or antacids; injected sulfate is hospital treatment.
Essential mineral for muscle, nerve and heart function; losses rise with heavy sweating and diuretics. Taken together, it can cut absorption of levothyroxine and some antibiotics.
Legal status: Sold freely as a supplement; some products are registered OTC medicines; not prohibited in sport.
What it gives
What people use it for and what the sources report. Strength is a general category from the literature: mild, clear or strong.
Purpose
Used against cramps, for sleep and recovery, and to replace losses during dieting or diuretic use. It corrects low magnesium; in people with normal levels its effect on cramps and sleep is small or unproven.
What people seek and what studies show
Reviews of trials in athletes and active people find no gain in strength, power or endurance when magnesium status is adequate; muscle benefits appear mainly in older adults and people with alcohol use disorder, who are often deficient. In people with diabetes or at high risk of it, meta-analyses show lower fasting glucose and better insulin sensitivity.
Effects
Evidence: Limited human data — some human studies, small or short
Sought effects by goal (as reported)
Possible side effects
Possible does not mean certain: whether they appear depends on dose, duration, individual response and monitoring. Below — what to watch for and how to notice it early.
1 possible side effect
level · how often it is reportedWhat the levels mean
Level: general category from the literature, not your personal risk
How often
- common
- reported often
- possible
- reported in some people
- rare
- reported occasionally
How to lower the risks
For 1 of 1 possible side effect there are specific ways to lower the chance: everyday measures, supplements and options a doctor may consider. No measure removes a risk completely.
Low-level side effects
How each option helps (2)
- Working with a doctor — Assesses persistent vomiting or severe belly pain (possible pancreatitis or gallstones) and adjusts prescribed GLP-1 treatment when nausea persists.
- Pancreatin + dimeticone (Pankreoflat) — May ease heaviness and gas after meals; can cause nausea or diarrhea. Not for pork or cow's milk protein allergy (anaphylaxis reported) or early acute pancreatitis.
Check-ups and blood tests
Which tests and check-ups to do and when. This is a guide — agree the exact schedule with your doctor.
Myth & fact
“Magnesium cures muscle cramps.”
A Cochrane review found magnesium unlikely to prevent ordinary night cramps in adults. It helps when levels are truly low (heavy sweating, diuretics), so check electrolytes rather than guess.
Combinations
No specific combination notes for this substance yet. The stack check still adds up side effects that several substances share.
Sources
Possible side effects by body system, combinations, how to lower the risks and which tests to do — free.
Open the stack check