Here is a link to the lyrics:
The sugar is used as a metaphor and isn’t supposed to be taken literally.
Medicine, that, too, doesn’t have to do with “Big Pharma” (though it can) but actually symbolizes the drudgery of life.
Julie Andrews is singing this song to children. Why should children be subject to drudgery? School is a drag for many kids. Learning should be fun and exciting, not boring, tedious, or just plain too much work!
Mealtime should also be fun. I’m sure that’s why spaghetti was invented. It makes eating fun. Imagine how boring it would be if we only had one type of pasta, one musical instrument, or if we were all alike….
Same for the workplace. We shouldn’t work our workers to the bone, or make them feel trapped in their jobs. Workplaces should provide a stimulating atmosphere for more tedious jobs, and provide friendly, positive support for workers. Bosses should be pleasant and they should ensure that the workers are getting along okay. They should throw office parties now and then, celebrate birthdays, and also congratulate workers for their accomplishments, even outside of work (such as graduation).
Unions help ensure that work doesn’t become drudgery, if the union is strong. Think: Mary Poppins came out in 1964. Unions were a big deal then. Is Mary Poppins, played by Julie Andrews, really talking about children’s rights and workers rights?
If we were to go further, and decide this is about pharma, then we know pills are literally sugar-coated, and figuratively, too. “This won’t have any significant negative effects.” Organ failure is minor, of course.