Thank you both. I did forget to mention that I take Celexa, which is suppose to help with serotonin--maybe I do not take enough. I have had tinnitus most of my life, right now is the worst it has ever been and for so long.
So, about the grapefruit, does that mean I shouldn't eat it?

I love grapefruit, yet I do not eat a lot of it and it is one of the few fruits I can eat.