It takes about 77 hours (3 days) for atorvastatin to be out of your system. The elimination half life of atorvastatin is approximately 14 hours. This is the time it takes for your body to reduce plasma drug levels by half. It takes approximately 5.5 x elimination half lives for a medicine to be out of ones system.

However other factors to consider 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.

For more information click on: https://www.drugs.com/pro/atorvastatin.html