Eating Out: A&D

Walmart Brand Pediasure and A&D Ointment?! Has Anyone Used Them!?

My sons pedi recommended we give him Pediasure while moving (20 hour road trip from San Diego to Washington) because he won't drink cold milk. My only concern is how expensive pediasure is!! Has anyone used the walmart brands parents choice version? Same with a&d ointment, walamart equate brand is so much cheaper! Anyone who has used these or know someone who does, can you let me know if it's the same thingnor should I bite the bullet and pay for name brand? Thank you!!