Most kids do not need a protein supplement. If you are curious, here is a cautious guide to the questions worth asking first.

Start with your pediatrician. Ask whether your child's diet and growth look on track and whether a supplement makes sense at all.
If you decide on something light like a gummy, read the label. Punchies list 5g of protein per five-gummy serving, vitamin C and vitamin D, and no dyes. Full label: www.punchiesprotein.com.
Talk to your pediatrician before starting anything.
Compare servings, sugar and allergens.
Supplements never replace meals.
Five gummies, 5g protein, 34 calories, under 4g sugar. Contains milk.
Source: the product label and store page, Punchies.
That depends on the child and the product. Ask your pediatrician.
Punchies contain milk, because whey is a milk protein. The label lists them as nut-free, soy-free, gluten-free and corn-free.
Strawberry, orange, cherry and green apple, with blue raspberry shown as a limited flavor. Availability can change, so check the store page.
A serving is 5 gummies, which the label lists at 5g of protein and 34 calories.
More answers are on the store page: Punchies kids protein gummies.
Details, flavors and packs: learn more.