'From now on, you must eat cabbage three times a day... And if it's got caterpillars in it, so much the better!' Most grandmas are kind and helpful ladies. Not George's grandma. She's a grumpy and grizzly old grouch and George wants to teach her a lesson. So when it's time for her medicine, George concocts a mixture which is guaranteed to send her through the roof... Roald Dahl, the best-loved of children's writers, was born in Wales of Norwegian parents. His books continue to be bestsellers, despite his death in 1990, and worldwide booksales are over 100 million! Quentin Blake is one of the best-known and best-loved children's illustrators and it's impossible now to think of Roald Dahl's writings without imagining Quentin Blake's illustrations. George's Marvellous Medicine by author Roald Dahl. Published by Sodis. This book has a 13 digit ISBN number 9782070650644 and a 10 digit ISBN number 2070650642.