What is your opinion of using some of the cheaper supplements from walmart for certain things like... potassium and magnesium????

You don't need a supplement for potassium. The highest dose allowed in supplements OTC is 99mg. That is like spitting in the ocean, when your RDA is 4,700 mg now.
One can of V8 has over 800mg in it. Many good food sources are 400mg a serving or more.

If the magnesium is not OXIDE... most brands will do.
WalMart has brand name SlowMag for $9.99/60. Average dose is 1 tablet daily or one tablet twice a day depending on how low you are.

Some of the brands at WalMart are surprisingly good and affordable.

If you are on HCTZ diuretic, your doctor should be giving you a potassium supplement anyway. Your doctor should monitor your potassium levels regularly. It is not wise to take potassium on your own without supervision.

I have had 3 doctors for BP and none of them even suggested I take potassium much less check it or mention it.

I did my own research and decided to take 4 of the 99mg tablets a day, cuz my muscles were twitching and I found on my own that the potassium helped.

Then 3 months ago when *I* told the doctor to run blood tests, I was the one that told him to check potassium, which was a 3.7 and the range was 3.5-5.1 so, that is on the low end of normal.

Will taking the 4 pills of 99 mg help ???

thank you Edited to add: I do not eat enuf food with potassium so i need to supplement. I do drink acv which has potassium but thats about all.

Here is a list of foods that provide good amounts of potassium:

http://www.algaecal.com/potassium-foods-list.html

4 OTC potassium products are equivalent to about 12% of the RDA.

This link is useful to plug in your diet and see how much of various things are in the foods you eat. It can help you make choices.
http://nutritiondata.self.com/

It will also show magnesium content of foods as well among many other things.

If acv =apple cider vinegar? Here is a link explaining its very low potassium content:
http://www.doctoryourself.com/honey.html

Bummer. I just read my bottle and the cheap magnesium from walmart that I bought IS from magnesium OXIDE.

I usually use Magnesium Glycinate but I ran out and the health food store is a drive away so I just bought cheap from walmart to "make do". Guess that answers my question about walmart supplements.

Thanks for the links, good read. I do ACV for acid reflux, works great.

It is not WalMart's fault. Magnesium oxide is given by DOCTORS still today, and they do not know it is not absorbed, either.
It remains in their therapeutic references still today. It is in most magnesium supplements still.

I type the OXIDE warning in almost every post on this subject for that reason.