Niacin
"I'm diagnosed with multiple sclerosis 
Before the diagnosis I had a sudden change in my mood form a very happy person to a very depressed person 
After the diagnosis and failure of 3 kind of treatment for My MS because it escalated my depression I stopped everything 
And started the following 
1. Dr.  TerryWahls protocol
2. Vitam B3 3000mg/day

It's been 2 years and i haven't got a single relapse 
And the Vitamin b3 helps with the depression."