What is the conflict of the book George's marvelous Medicine?

George has a disagreeable grandmother and he has to feed her medicine every hour. He makes his own medicine out of things like hair oil and shampoo. Then he feeds it to his grandmother. Then his grandmother becomes very tall and bursts through the roof of the house. His parents come running home and the father is thrilled and george makes some more then they feed it to the farm animals. Then the animals grow enormous then they get more meat, milk ect. Then happily ever after.