Weak/Shaky feeling on some mornings

My mom has been struggling more with symptoms since she had some kind of "flu" and since she took a couple Zantac which seemed to flare her horribly. After she didn't seem to be calming down much, we started her on some low dose ABX pulsed which seem to be helping her some. We also are trying homeopathic remedy for nausea/vomiting and Zofran which we think both have helped her somewhat.

She has had this symptom where on nights when she lays down or sleeps all night, she feels weak, sick feeling in stomach, and little shaky at times the next morning. I don't think these symptoms always hit her before she gets out of bed but when she gets up she starts to feel it. This weak/shaky feeling leaves her as the day progresses. The funny thing about it is if she is up all night belching and riled in her stomach, she doesn't get this feeling the next morning or if she has it, it's very mild.

Her electrolytes have been out of range at times, but that could be just because her gut has been so out of wack. She is taking electrolytes every day now and has added Magnesium. We are gradually trying to add things back in.

She has had sometimes when her heart rate is higher but then it goes back down. Looking back over notes, it appears that the higher HR might be more after she has taken ABX, and as I said, it is not always high even after ABX.

Her BP has done a funny thing in that it used to run high but now it sometimes runs a bit low, and she doesn't have to take her BP med anymore. My BP dropped and started running on the low side at a point in my illness when I was really sick.

We did see a Lyme doc the other day, but she seemed to focus more on ruling things out and on giving recommendations for gut healing and restoring gut function (and possible testing in future). I didn't even think to mention it at the appt., but I think Mom's symptoms could be more connected to the vagus nerve. Other symptoms she has are (some come and go): frequent BMs, fatigue, restless legs and body, insomnia, numb foot, tingly toes, mucus, back pain especially when standing at counter working, blurry eyes, gut issues, etc.

She had some labs about two months ago that were overall good. She does seem to herx and improve with some herbs and ABX.

Any thoughts on cause of this weak feeling? Any thoughts or recommendations on anything?

(1) Adrenals are possibility
(2) Thyroid was checked two months ago and seemed fine
(3) She seems to get it whether she sleeps or not just as long as she has been laying down in bed most of the night.
(4) Could very well be possible

I'm hoping she will tolerate Vitamin C. Hasn't taken it because of the flare up. Maybe that will help if adrenals are involved.

Thanks.

Another possible explanation for feeling worse upon awakening from a full nights sleep is that the toxins tend to pool. Once we begin to move around and the lymphatic system starts to work the symptoms are not as intense. This is a strange phenomenon.

Some very common examples of this (many here mentioned in the past), is simply having your tooth brush or comb continuously drop or fly out of your hand in the morning.

Does this happen too?