One of our first stops when we arrive back in the United States is always the local pharmacy. We want to be prepared for anything. We have been in France, which is rich in pharmacies of a sort. There are some 22,000 of them, each one marked with an illuminated green sign, and they have a virtual monopoly on the sale of medicines, all the way down to aspirin. If you are familiar with American pharmacies, the French version looks and feels like an entirely different kind of business.