Label guidance in this group spans from "newborn and up" for infant drops to typically for children aged about 3–4 years and older for chewables and gummies.
CFU counts in these products span roughly 1 billion up to 6 billion colony‑forming units per serving, depending on the formula.
Common labels include gluten‑free and dairy‑free; several products are certified gluten‑free, non‑GMO, organic, or vegetarian. Listings also frequently note no artificial flavors/colors/preservatives and, in some cases, exclusion of major allergens or a gelatin‑free formulation.
Listed strains include Lactobacillus rhamnosus GG (LGG), Bacillus coagulans, B. subtilis (DE111), and various Lactobacillus and Bifidobacterium species such as L. acidophilus, L. gasseri, L. paracasei, L. plantarum, and B. lactis, B. breve, B. infantis, and B. bifidum.
Some kids supplements pair probiotics with prebiotics (often proprietary prebiotic blends), and a few formulas also include vitamins — commonly vitamin C and vitamin D — alongside the probiotic strains.