Every day for the last three years, I’ve started my morning with four prescription pills that cost roughly $11 each. I say “roughly” because the price fluctuates. The last time I filled a 90-day prescription, the full cost was $4,037. Sometimes, a 90-day refill costs hundreds of dollars less. But it’s always expensive enough for one of the pharmacy techs at my local Rite Aid to let out a whistle when I tell them what I need to pick up.

About a year ago, someone I suggested I check out the prices for this drug in Canada. My medicine, which is called Lialda, turns out to cost thousands of dollars less just 500 miles north of D.C. Global Care RX, a Canadian online pharmacy, sells a 90-day supply of Lialda for $710, while Canadian Pharmacy King sells it for $734.

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