KJZZ's The Show July 10, 2017 Published July 10, 2017 at 11:31 AM MST Listen (Photo by Jorge Valencia - KJZZ) Margarita Garfias cares for her son, Carlos Antonio, in their middle-class neighborhood in Mexico City. Carlos Antonio, 13, had been suffereing from frequent seizures until he began to take daily drops of a marijuana-extracted oil last year, Garfias said.