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Since the Ciprofloxacin
drip was at room temperature (cooler than your body temperature) you experienced the chill feeling as the drug entered into your warm body. Ciprofloxacin is a common and relatively safe drug given for Gastroenteritis
. Some patients have reported chills
and sweating like yourself but they are relatively benign and not much to worry about. The blood being dropped down to low levels may be due to a viral infection. But Ciprofloxacin can cause bleeding and low PCV and blood in urine if taken in patients with G6PD deficiency
which is a heritable disorder. You may get tested for G6PD deficiency from your Hospital by getting a Peripheral blood smear and a Fluorescence spot test (only in some hospitals) to confirm.