texas September 2, 2019 5:00 pm New Law: Age to Buy Over-the-Counter Cough Medicine A new Texas law that went into effect Sept. 1 requires customers to be over 18 years old to buy over-the-counter cough medicine. Texas is the 19th state to raise the minimum age. Wake Up to Something Good 1:47 Heavy rainfall affects parts of DFW, Kaufman County 2:43 Governor declares state of emergency after Oklahoma tornadoes 2:09 Aftermath of heavy flooding in Kaufman County 1:41 Multiple killed during Oklahoma tornadoes 6:20 5 Talk Street: Dallas Cinco de Mayo