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Is ionic magnesium better than magnesium oil (magnesium chloride) for use transdermally?

Answered on August 19, 2014
Created September 20, 2011 at 7:09 AM

I ordered a multi-pack of Trace Minerals Mega-Mag, and I find that I can't take very much by mouth without an unwanted antacid effect (100mg/day tops). The upside is these will last a very long time, but the downside is I have a whole bunch of it sitting around taking up cupboard space, and not making it into my system.

I also use magnesium oil transdermally, but I'm wondering if this might be more readily absorbed given it's ionic nature.

6120c989fd5b69f42a0834b69b87955b

(24553)

on September 20, 2011
at 07:53 PM

Wow, majkinetor, that is some high Mg water. Do you mind if I ask what kind it is? I used to drink Gerolsteiner all the time, and I don't remember what Mg content was, but I remember single digits/L. Maybe I'm not reading this right, but it looks to me like water solubility would make Mg more bioavailable. I had been taking Mg citrate, and was able to easily take 500mg. without noticing any difference in digestive ability. Looks like water solubility would explain that.

77877f762c40637911396daa19b53094

(78467)

on September 20, 2011
at 11:47 AM

Thx CS, great find. I always wondered is it better to drink carbonated water with natural Mg ions (I have here 300mg/L and 1.1g/L carb. waters) or to take chelated variant. So it looks like natural water is ultimate Mg supplement.

77877f762c40637911396daa19b53094

(78467)

on September 20, 2011
at 11:46 AM

Thx CS, great find. I always wondered is it better to drink carbonated water with natural Mg ions (I have here 300mg/L and 1.1g/L carb. waters) or to take chelated variant.

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1 Answers

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24df4e0d0e7ce98963d4641fae1a60e5

on September 20, 2011
at 11:28 AM

All forms of magnesium, aside from pure metal, are ultimately ionic. That is, Mg forms a +2 cation and bonds to -1 or -2 cations. Magnesium chloride is MgCl2, magnesium oxide is MgO, magnesium citrate is . I suspect the bioavailability of various salts is more related to the solubility of the salt (so it dissociates/breaks apart to Mg+2 ions and whatever -2 or -1 ions) and/or the interaction between the associated anions with other minerals. MgO is not very water soluble while citrate is.

Heck, why suspect, I came across this looking for the solubility of Mg citrate (the form I take) : Magnesium oxide was virtually insoluble in water and only 43% soluble in simulated peak acid secretion (24.2 mEq hydrochloric acid/300 ml). Magnesium citrate had high solubility even in water (55%) and was substantially more soluble than magnesium oxide in all states of acid secretion. From: http://www.ncbi.nlm.nih.gov/pubmed/2407766

77877f762c40637911396daa19b53094

(78467)

on September 20, 2011
at 11:47 AM

Thx CS, great find. I always wondered is it better to drink carbonated water with natural Mg ions (I have here 300mg/L and 1.1g/L carb. waters) or to take chelated variant. So it looks like natural water is ultimate Mg supplement.

77877f762c40637911396daa19b53094

(78467)

on September 20, 2011
at 11:46 AM

Thx CS, great find. I always wondered is it better to drink carbonated water with natural Mg ions (I have here 300mg/L and 1.1g/L carb. waters) or to take chelated variant.

6120c989fd5b69f42a0834b69b87955b

(24553)

on September 20, 2011
at 07:53 PM

Wow, majkinetor, that is some high Mg water. Do you mind if I ask what kind it is? I used to drink Gerolsteiner all the time, and I don't remember what Mg content was, but I remember single digits/L. Maybe I'm not reading this right, but it looks to me like water solubility would make Mg more bioavailable. I had been taking Mg citrate, and was able to easily take 500mg. without noticing any difference in digestive ability. Looks like water solubility would explain that.

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