She also had an open glass of water under the podium during her first public coughing fit of the day. I thought it looked odd.
IMO, the water is nothing but a prop. She didn’t drink the bottled water or the glass of water on the plane. Even though she was raising the glass of water from the podium several times, the water level didn’t decrease as it should have. A side view of her drinking the podium water shows the glass barely touching her lips. Nothing seems to quiet her coughs except what happens behind closed curtains. Whatever the fix is, it is fast acting, makes her perky and causes a bit of slurred speech.