I cured sciatica in my right leg using black strap molassas. I read in the book The Ultimate Healing System by Donald Lepore, N.D. that sciatica in the right leg is caused by a potassium deficiency. Since I always seek out food sources over supplements I started the black strap molassas and have never had pain again.
FYI, the book says sciatica in the left leg is a sodium defiency.
Things that deplete potassium and sodium are drinking alchohol, processed foods, sweating/ecercising, and being sick, to name a few.