Use of the constipation medications can make you chemically dependent and you won’t be able to go at all without it later. I NEVER touch laxatives.
I would look up South Beach diet. It works nicely to deal with anti-psychotic drug side effects of insulin resistance. Uses regular food. Weight falls off quickly… This diet has a Atkins sort of phase that cuts the cravings…You do this for 2 weeks then slowly add back in fruits, oatmeal and 1-2 carbs daily.