Salty taste in mouth

Do you mean you were tested for all those and your levels were normal? If so, I can understand why they said that. But, if they don’t know the levels…..I’d be curious about the reasoning. I had no idea that I was not absorbing B12. I had developed substantial damage as a result. So diet and even oral vit B12 won’t help me.
Also, years ago I was diagnosed with Vit D deficiency. I now take supplements, because I need it. Low level Vit D can cause severe problems. My doctors have ordered this. So, it’s not up to my nutritionist. I value my nutritionists. I have two, but they are not physicians.

I get a salty taste in my mouth when I am dehydrated. Sometimes plain water doesn't absorb in the body like it should and can cause an electrolyte imbalance.

I take prenatal vitamin, D, super B12 & biotin. Zinc, Selenium & vitamin C - I wonder why a nutritionist told you get off vitamins & get them e food intake. Did she give you a sheet w vitamin provision options? I can't afford to get sick or have a vitamin deficiency. Best to you

As a biomedical engineer and growing up with a mother who was a head nurse of a top research hospital for 22 years, i will tell you that our food theses days have no where near the amounts of nutrients we need. They are grown too fast; the soil is depleted, and a bunch of other things. Even if you ate organic, you would have to eat ALOT to meet our needs.

This doesn't mean we need to go overboard on vitamins as well. Nothing wrong with a basic single "one a day" brand multi. they are cheap to buy, certified to have the correct ingredients and actual dosages listed on the bottle.

Always check with a doctor and blood tests : )