And these mini drug store clinics, I think do no more that treat, very minor issues, and tell you to go to your Primary Care doc if you need lab work.
And a simple multi, which only contain trace vits/mins with a acid reflux med will only mask the issues.
Individual vits/mins, acidopholis can and do help folks.
BUT before any blood work can be done, a person has to be off all them for 2 weeks. I know this because I take them, and had to be off 2 weeks just to get a platelet count done.
I’d consider environmental sources, too.
Also, a detailed log of all food and activities is important.
And as you mention, it may take some time for the cause and effect. Often, we expect quick and immediate results.
Bottom line: a diagnosis is very important which means tests.
You don’t say what part of Oklahoma trussell calls home. That said, there are some pretty good Instant Care centers (aka Urgent Care Centers) that will at least refer her to a hospital if needed. (Know this from experience, we live near OKC)