Hi Iwillbeatthis.
When I first took L-Arginine, I limited the dosage to about 250mg a day (Swanson Ajipure Arginine capsules) and around that time I had improvements in some symptoms (like dry eyes) but couldn't make a definite link to the Arginine due to the amount of other things I was taking. I next got a pure powder called "Doctor's Best L-Arginine" which was in the form of Arginine HCL (not a good form of Arginine) and I found it affected my sleep badly so I stopped.
Eventually, I found a product called "Now Sports L-Arginine powder" which is "Free-Form" Arginine (the most usable form of amino acid) and it contained no fillers. I took a large 3000mg dose of the Now Sports powder and the next morning found my worst post-antibiotic symptoms returned like hair falling out and soreness in my ear and neck cartilage. I thought the hair loss might be due to low levels of L-Lysine (this is the amino acid that antagonises Arginine and vice-versa) so I started taking an equal amount of L-Lysine with the L-Arginine.
For years before I took the fateful antibiotic, I had been dealing with chronic fatigue syndrome and strange things like a muscle tear that gets worse after an orgasm (some kind of connective tissue disorder). I found that taking the Arginine/Lysine combination would stop the muscle pain and I think Arginine on its own might actually do the same thing. I have since taken a 3000mg dosage of Arginine again without any Lysine and didn't get the same scary symptoms so I'm thinking maybe the Arginine caused some kind of die-off reaction. When I then took the Arginine on it's own, I tended to wake up heavily fatigued so I added the Lysine again and found that got rid of the heavy fatigue in the mornings.
Today, I decided to try 3000mg of Arginine on its own again and within about 4 hours, I had a racing heartbeat, sinus pain and heavy fatigue (so it seems Lysine might block some of the effects of Arginine). It's amazing how similar this sounds to what you're dealing with. I am going to stop the Lysine and just take Arginine in various doses over the coming days, I need to find out if this really is a die-off reaction.
Regarding the salt, I personally wouldn't consume that since salt is an inflammatory and it can deplete things like calcium. With exercise, when I used to force myself to go cycling, I would stay out for about an hour and generally felt a lot better. I don't think exercise clears a fungal overgrowth though so I stopped.
I've tried the Creatine, Glutamine and Zinc. I'm really not sure that they've helped.
All signs do point to this being a fungal overgrowth. Here's an article that suggests Nitric Oxide kills Candida but that the Candida finds a way to disable the Nitric Oxide:
https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0096203https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1905260/Arginine is one of the best ways to boost Nitric Oxide and perhaps kill off a candida overgrowth. I also have some Colostrum LD that may be equally good at killing candida. The real difficulty is figuring out whether something is a die-off reaction or if it's actually making things worse, that takes so much time.