Not sure about the sugar... The one that I tried was from a little gift basket. It said sugar free/low carb. But, I only had the one packet.
I've seen all sorts of mixes available. Some are merely tea and spices, where you are supposed to add your own milk and/or sweetener. This is the type I'm going to look for. If I find a good one, I'll post it. I think I've seen artificially sweetened mixes, too.
JB's Audio
It's the top mp3. Called, "Customer Exclusive - Nutrition On The Go."