depression
"After getting used to the medicine, which took a couple of weeks of confusion, I began to realize my problems with 35 years of depression, especially bad in the last five years, went away like magic!  My focus also improved.  I cannot tell you how good it feels not to go to those deep, dark thoughts, lack of motivation, and an "I don't care" attitude.  Being able to stay present in a pleasant world I had missed for so long is a wonder, and I had no idea it treated depression.  The only problem I have with it is, it makes the muscles in my legs, both above and below the knees, to hurt quite a bit.  If the makers ever go back to tinkering with its chemistry, stopping the pain would be smart,  with a super-low start dose recommended."