One stand-out among complementary therapies shines through however. Cannabis sativa, also known as marijuana or "pot." Indeed, pot users have shown some strides in improving sleep and muscle spasms. Other groups reported reductions in pain. Pot did make cognitive deficits and balance and posture worse (probably not a surprising result).
You can read the entire study here:
http://www.neurology.org/content/82/12/1083.full
2008-11-08_Raisa_Sagdejeva_blowing_a_smoke_ring_at_Hookah_Bliss.jpg