Yep. They do. I actually preferred the sugar free ones even before I knew that because they made my throat less sticky.

But I don't count the calories in them - if I need 1 or 100 of them, I take them. And not to freak you out, but cold and flu medicines have calories, too. More than cough drops.

Just take whatever meds you need - I've had times where I need a TON of medicine just to function through the sickness, but it's never set me behind in losing weight (that's reserved for parties, etc. ;)).