FDA calls for heartburn drug Zantac to be pulled from shelves due to contaminant NDMA, April 1, 2020
The problem is NDMA, and this FDA order comes on April 1, or 1/4, or 4/1, a day known for practical jokes.
https://www.cnn.com/2020/04/01/health/zantac-fda-remove-from-market-bn/index.html