Alfredo depends. you can make your own. Also ther eis a Ragu four cheese sauce which is fairly low carb. All the alphredo I've seen commerically is higher carb, but homade can be very LC.

Try it at a resteraunt at your own risk. I've become so paranoid about resteraunt eating I just have plain whole foods without sauces. Sugar is a cheap and easy way to make people enjoy the meal and come back for more. Starches and other carby fillers are also a cheap way for resteraunts to make more money on meals. Even with the whole foods the sodium levels of eating out ususally mean some water retention for me.