My nurse told me there were conflicts with my meds and St. John's wort, which I was taking. So I stopped taking it. I felt very "down" and depressed after that so I started taking it again. I just checked for interactions and found that 6 of my meds [amlodipine, baclofen, donepezil, melatonin, trazodone, & venlafaxine] were listed as interacting with it. The only difference I could feel between taking it and not taking it was an increase in the depression feeling.
What can I use instead so I won't be feeling my depression?

Thank you in advance.