Many drink mixins are marketed as sugar-free or zero-sugar and low-calorie. Per-serving calories in the sample items range from 0 to about 10 calories (examples include 0, 5, and 10 calories).
Preparation is simple: powdered packets or sticks are emptied into a bottle or glass and shaken or stirred—guidance typically suggests using about 16 oz (two cups) of water. Liquid enhancers are squeezed or added to a bottle and shaken.
Many are sold as individually sealed single-serve packets or travel-friendly bottles and drops that can be added directly to a water bottle, making them easy to carry and use while traveling.
Some powdered mixes include caffeine—for example, one listing showed 120 mg per serving—while other mixes are labeled non-caffeinated or caffeine-free.
