Ciprofloxacin should be out of your system around 22 hours after your last dose. The serum elimination half-life of ciprofloxacin with normal kidney function is approximately 4 hours. This is the time it takes for your body to reduce the plasma levels by half. It usually takes around 5.5 x half-lifes for a drug to be completely eliminated from your system (5.5 x 4= 22 hours).

Other factors also need to be taken into account and include:

1. How much and how often you have taken the drug.
2. Your metabolic rate – a slower metabolism will increase the time a drug remains in your system.
3. Your age and health – older age and poor health will generally increase the time the drug stays in your system.
4. Body mass – generally the bigger you are the longer a drug will remain in your system.

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