Your dose of amitriptyline is unusually high. Amitriptyline is usually prescribed at 10 to 20 mgs for PCS. I would seriously consider tapering down to a low dose.

Check online for tapering down guidelines or ask your pharmacist.

PCS can cause serious taste changes. It appears you have quite a change to your taste buds. Craving salt is usually your body telling you need salt. You may be consuming less salt with your change in taste preferences. I know that sodium and calcium can get messed up in how your brain uses them with PCS. Maybe this is a cause.

You need to learn how to read your brain as it reacts to you exercise and other tasks. You want to reduce your effort before you cause a rerun of symptoms.

Let us know how you are doing.

My best to you.