Nutritional add-in for kid's meals. Something catchy and clever. Not literal. Bonus for less than 9 letters.

SNEAKEAT (sneak + eat), sneak it

Mighty FedUp

Sneakibly

Sneakably

Nutrick (trick the kids)

Supercharger

Stealthy / Stealthy's

"UndercoverVeg" It suggests adding vegetables in a hidden or sneaky way, which aligns perfectly with your concept of nutritional add-ins for kids' meals. It's catchy, easy to remember, and effectively communicates the idea of stealthily incorporating vegetables into everyday dishes.

mamameals

Vegeez {veggie + easy)

ADDLY

"Feedaboo" [feedaboo.com domain available | WIPO trademark available]

Mighty Meal

Foodle

IN-RICHED / INRICHED

Delishhhh - a combination of Delicious and Shhhh This is a clever and catchy name that is subtle yet impactful addition of nutrition to delicious meals. Delishhhh - your secret is safe with us (suggested slogan which is catchy and works well with the brand name). The .com is available for 0.01 pence and is only 9 letters long.

Vegita [Veggie + Vita]

Snuckitin [Snuck it in]

Camoufoods [Camouflage + Food]

ADDZY

Fuels Gold

ADDIBLES (eatable adds). Tagline could be: Just incrADDible!

SNEAKINS, SNEAKZY (sneak it in easy, easily)

Adden (add+hidden)

Hide N' Sneak

Dear Veggie

Veggi

Addlicious

Addish This play on words incorporates the word Add, Dish and Sh as in hush hush. Although this could be shh too so the name could be Addishh. The latter is available as .com

ScuttleUp

MealMax

HeySneaky

Gladly / Gladdly

Yumzy It's short, memorable, and conveys a sense of deliciousness and fun, perfect for a healthy kids' meals business.

Hug-anic

Addzin - basically meaning 'adds in', very short, catchy, easy to remember, and the .com is available for 0.01 pence.

Add-inz or Addinz Similar to my previous entry but switching the letter around. You mentioned that it was add-ins for meals so the name seems fitting. Add-inz .com is available for 0.01 pence.

WiseMom

Sneaks

Fixables

Invisiboost or Invisiboosters

Healthy Hush

Hush-Hush Veggies

SnuckEat [snuckeat.com]

Snuckiz [snuckiz.com]{Snuck + Ease}

Sidlemix

Snuckoo [snuckoo.com]

“SlipIns” Implies that the nutritious elements are effortlessly slipped into meals, adding benefits without being detected by picky eaters.