It should not be used unless absolutely necessary. It can cause dopamine withdrawal in people that use it when they discontinue it. It should only be used for ataxia. It reduces dopamine levels and increases sensitivity and dopamine receptors.
It is fine short term for most people but long term use has its negatives.
I used it for my son Abel because he needed it. Most people should avoid it, especially if they want to use it long term.
My book Fix Your Gut, is offered on Amazon for $9.99.
I also offer coaching: http://fixyourgut.com/health-coaching-information/
Please join or like the Fix your Gut Facebook. Also please add me on twitter @FixYourGutJB.