I don't have cramps, but I do have fasciculations, and aching pain. The snake oil remedies won't work. I've had this since Feb last year, it's sort of a curse. Feels like someone is continuously tapping my arms, legs, or pulling little muscles in my hands. Things that helped improve it:

- Getting a full 8 hours of sleep, no matter what. If you haven't tried melatonin supplements, now's the time. I'd start with 3mg and see how it goes.
- Eliminate all caffeine, even chocolate
- If you've got the willpower to do it, try doing 2-3 weeks eliminating dairy, gluten, and alcohol from your diet, then slowly add them back in one at a time, one week at a time, to see if it has any impact. Reducing dairy and also eliminating alcohol helped me a lot.
- Get your B12 and D levels tested. If they're super low, or very low, try supplementing. These helped me a little, not a lot, but they did help a little.
- Exercise more, and focus on work as much as possible, find distractions. If I get 30 minutes of nothing, I will gravitate right back to thinking about it and it gets worse.
-Cal/Mag/Zinc supplements may or may not do anything.
- Neurologists may give you a benzo, like Gabapentin or Carbamazipine. You won't get addicted to any of them, but it's a coin toss. I've read hundreds of forums over the past year and some people react positively and their twitching and cramps totally disappear. Then there's people like me, where it magnified the twitching, making it far worse, so I stopped taking these things.

It never really gets better, so it's best to find a routine to work with it somehow. Me personally, I refuse to accept that there's not something in my body causing this irritation and I continue to search for answers. I'm following up with a gastroenterologist and a urologist to see if it's something in my gut causing all this. I'm keeping a journal which you might want to try too, to see if there's something that I'm either doing or eating that's triggering this. Good luck!