Not to be too obsessed with magnesium, but I wanted to list the things I have learned so far about magnesium and magnesium supplements. As I have stated here before, I can’t have most vegetables or nuts, which are important sources of magnesium. So, I have to take magnesium supplements to get my magnesium. But I have sure learned quite a bit now about these *$#@%&%@! supplements.
And here are some of those things:
- Magnesium is important for muscles, nerves and joints. That is why, if you can’t have vegetables or nuts, supplementing is a good idea.
- Some magnesium supplements contain magnesium oxide, which is not very bioavailable, and it is best for those who want to use magnesium as a laxative. (If a supplement product claims to be good for your muscles, nerves and joints, but its main ingredient is magnesium oxide, then I think they are being dishonest, and I call that product “cheap crap.”)
- Some supplements are sensitive to hot and humid weather. At least that was my conclusion last Summer with my magnesium citrate that was or seemed less effective. When it was less effective, it seems to be then acting more as a laxative. That’s been my own personal experience.
- Magnesium citrate and magnesium glycinate are quite bioavailable, although the glycinate is more so, and the citrate can be used as a laxative. There are other forms of magnesium in supplements that I haven’t had.
- Magnesium supplements can interact with other mineral or vitamin supplements. Too much supplemental magnesium can affect calcium and vitamin D levels (and maybe vice versa). There might also be a magnesium-iron interaction. I’m not sure, because some things have said to separate the magnesium from the iron and other things say to combine them. I take my first magnesium pill at breakfast with my zinc, and my 2nd magnesium at dinner. And I take my multivitamin that contains 100% daily iron with my mid-day meal. I did see that iron should be separated from vitamin E and zinc. Here is something from Labdoor, and something from ConsumerLab. Unfortunately, there is some conflicting information on the Internet.
- Too much magnesium being absorbed can cause dehydration and headaches. Especially if you are not used to taking magnesium supplements, in which case it is recommended to take a small amount at first (like one pill rather than two per day) and gradually increase it.
- Many magnesium supplements have been shown to be too high in arsenic and lead. Check them on Labdoor.com and ConsumerLab.com. But the label can indicate that it is probably safer. For example, “GMP” stands for “Good Manufacturing Practices,” and “USP” stands for “United States Pharmacopeia” that means it has passed actual tests for quality and purity, as I wrote here.
- And other magnesium supplements seem to contain other ingredients that you may not want, as I wrote here.