You might try some magnesium. It's what I use for spasticity and I've used it for over 25 years after a good neuro prescribed it. I take about 1000 mg a day, a high dose. My whole leg can go spastic without it, from hip to foot, day or night. It's tricky to get the right dose because it can cause diarrhea. Ask your neuro about it, maybe he is smart like that one I had in San Diego.