Side effects - Seroquel (Quetiapine) and muscle tone

[bcubed]

Background: SWIM had a horrifically severe sleep disorder, similar to (but not) sleep apnea. SWIM became so erratic in his behavior as a direct result of sleep deprivation that he was briefly institutionalized.

The Seroquel they put him on worked. At a loss to explain this (and not willing to accept "nuts" as a diagnosis) he perused the PDR, where he noticed a "more common" side effect of Seroquel is enhanced muscle tone. This explained the why to SWIM, though the docs were skeptical, at least at first.

Not to debate this, just to ask if anyone knows of a drug that also increases muscle tone without being such a total mindfuck.

Thanks.