I have dropped meds of all sorts left and right cold turkey and really never had a hiccup ..
But....
Oh hell.... hell Lithium??? I went through absolute hell! I was so so sick on all levels, There was many times I preferred to just die.. Almost 3 weeks of hell.. Then I slowly got better.
I will say it took me about 3 months for my brain to re learn how to function with out lithium or any medications.
I no longer felt dumb as a stump, I could suddenly remember how to spell words like "what" "ours" "symptoms" etc etc.. you get the picture.. I could talk again without lots of.. Ummmmmm, Errrrrr..
I had hoped that my hand tremor would have left also, but nope ! it's not as bad as while I was on Lithium, But its still here..
As for food? Well I had no desire to eat while so sick, But I also deal with Anorexia and I struggle with food routinely.