The Z-bars use a new type of sugar alcohol that seems to have fewer side effects (diareah and gas) however like stated above, anything sweet, especially sugar alcohols, can cause slows or stalls in loss. Also it really doesn't help promote a new way of eating and change taste buds when you substatute with alot of low carb treats. I'd say do a clean induction (no sweets or LC processed foods) then maybe add some back in. You'd be amazed how the taste buds change and cravings go away.