Wheatgrass causing tinnitutis

Almost a 15 months ago I started taking wheatgrass begiining with 1 oz and then 2 oz everyday for three months.Everthing else as far as energy is concerned was fine.Only adverse sideeffects which I have developed are ringing in ears(Tinnitus).That is the reason I have stopped taking it.Does anyone has clue why it happened and it has not gone away even after a year of quitting wheatgrass.I do have IBS/LGS. I used wheatgrass from Jamba Juice and Dynamic Greens.I will appreciate any help in this matter. Tweet