The present invention provides solid and liquid compositions comprising 5-(neopentyloxy)-1H-benzo[c][1,2,6]thiadiazin-4-amino-2,2-dioxide or 3-(4-amino-2,2-dioxide-1H-benzo[c][1,2,6]thiadiazin-5-yloxy)-2′,2′-dimethyl-N-propylpropanamide, and methods of making the compositions by spray drying and spin ...