They come as liquid concentrates (squeeze or pour bottles) or ready-to-drink (RTD) liquids, and as powdered mixes available in single-serve packets or multi-serve tubs/pouches.

Options include zero-sugar/zero-calorie liquid enhancers, sugar-free powders, and low-calorie mixes. Some stick packs list about 1 gram of sugar and roughly 5 calories per serving.

Instructions typically say to add one packet or a few drops to a water bottle and shake; packets often recommend mixing one packet into about 16 oz of water, while liquid enhancers are squeezed or poured directly into water to taste.

Liquid enhancers are typically packaged in plastic (PET) bottles. Many bottles include easy-dispensing pour spouts or squeeze tops designed for mess-free, measured servings.

Many listings call out dietary labels such as gluten-free, kosher, vegan or vegan‑friendly, keto‑friendly, and dairy‑ or soy‑free — though availability varies by formula and brand.