The best replacement for muscle spasms is cramps.

The best alternatives to muscle spasms are rated as following:
★★★★★  cramps
★★★  twitches
★★  twitching
★★  seizures
★★  baby moving
★  baby kicking
★  muscle cramps
★  heart problems
★  tremors
★  charlie horses

Your alternative for muscle spasms is not listed? Suggest!
Speaking about muscle spasms, one probably shouldn't forget about sciatica.

Other search terms related to muscle spasms and their ratings are:
★★★★★ sciatica
★★ fractured ribs
You have in mind a companion for muscle spasms and it is not yet here? Propose!



Google Trends

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muscle spasms
cramps
twitches