7 doctors weighed in:
How many magnesium tablets would you have to take to have a fatal overdose?
7 doctors weighed in

Dr. Su Fairchild
Integrative Medicine
3 doctors agree
In brief: Lots
Babies have fatally overdosed on magnesium, but not adults with normal kidneys.
I suppose enough magnesium could cause severe diarrhea and death might result from massive diarrhea and electrolyte depletion and dehydration over many days eventually. But someone would have to be intentionally wanting to do this.

In brief: Lots
Babies have fatally overdosed on magnesium, but not adults with normal kidneys.
I suppose enough magnesium could cause severe diarrhea and death might result from massive diarrhea and electrolyte depletion and dehydration over many days eventually. But someone would have to be intentionally wanting to do this.
Dr. Su Fairchild
Dr. Su Fairchild
Thank
Dr. James Cain
Internal Medicine - Nephrology & Dialysis
3 doctors agree
In brief: A lot
No matter the size of the pill, because mg is not well absorbed the biggest symptom would be diarrhea.
Renal failure patients would be in more danger because the kidneys remove excess mg. I suggest that you discuss this (and any other) fatal ideation with your physician and get help if you are suicidal.

In brief: A lot
No matter the size of the pill, because mg is not well absorbed the biggest symptom would be diarrhea.
Renal failure patients would be in more danger because the kidneys remove excess mg. I suggest that you discuss this (and any other) fatal ideation with your physician and get help if you are suicidal.
Dr. James Cain
Dr. James Cain
Thank
Get help from a real doctor now
Dr. William Forsythe
Board Certified, Emergency Medicine
23 years in practice
171K people helped
Continue
108,000 doctors available
Read more answers from doctors