ohh oohhh, i lose my voice too. It started with tobi but now it happens when Im not on tobi, dont know why and sometimes Ill go to my parents house and out of no where my voice gets hoarse which is probably caused by an allergen my parents have a cocker spaniel i think the stinky dog is the culprit but it doesnt happen all the time thank goodness.
I mentioned the hoarseness to my doc a long time ago and he told me not to talk to loud which i have that problem when I get excited about something. I don't do anything for it except try not talk as much and maybe suck on a cough drop to keep my throat moist, my throat is not sore either.
Also if you are coughing a lot that will irritate the vocal cords as well.