supplement interactions?

[tommyboy]

Hi All.  I'm new to the forum.  Diagnosed about a year ago and been on Pentox for approximately 7 months.  I also take L arginine, Co Q10 and Acetly L Carnitine.  My question is this - does anyone know if taking herbs like st Johns Wort or Ashwagandha for an unrelated problem with anxiety and depression would interact or adversely affect the impact of my medication or other supplements?  I don't fancy prescription SSRIs if I can help it.  

Any help would be greatly appreciated.