I wouldn't...even as a treat. Even at 3yrs post RNY I still react badly to added sugar and avoid those things like they were poison.
As previously said it's a cup of crap. Try making your own with splenda and REAL lemon and crushed ice....then share the recipe.
denise, you need to be more aware of what you're putting into your body. At 4 months, you should still be obsessively reading labels, asking for sugar free stuff!!! please!!! you're going to dig yourself a big deep hole if you don't be more aware.
At 5 years out.. they still make me sick. Though if you have to have one... you can ask for half syrup instead of the full dose... I also found that coming home and just squeezing lemon juice into a glass of heavily iced water tasted just as delicious with less sickness :)