@lioness-thanks for clarification. It’s obvious you know your body well, & you have an excellent command of the medical field so I appreciate your input. I do have a full panel workup annually & sometimes a couple of times per year. Right now I take extra magnesium tablets at night, & I think that helps a bit too, But I don’t think it’s a complete answer. I think it’s an individual thing as you’ve noted too, but trying to put all that together and apply it to my individual body is sometimes something of a mystery. Trial and error seems to be the only way to find out what works and what doesn’t. I do know that despite the doctor continuing to check my iron (specifically ferritin levels) even when it’s been at its highest level, my symptoms are still just as prevalent as when it’s low.