Ciprofloxacin comes as 250mg, 500mg and 750mg tablets. It also comes as a liquid that contains 250mg in a 5ml spoonful (250mg/5ml). The usual dose of ciprofloxacin is 250mg to 750mg twice a day. For some infections you might only need to take a single dose. Doses are usually lower for children and people with kidney problems. Swallow the tablets whole with lots of water. Do not chew them. Ciprofloxacin liquid comes as granules that you need to dissolve in the special liquid provided. Follow the instructions that comes with your medicine.