There is no direct information available in the provided sources regarding precautions to take when stretching while using Lipitor (atorvastatin). However, it is important to note that Lipitor is a medication used to lower cholesterol levels and is generally well-tolerated by most individuals.

Stretching exercises are generally considered safe and beneficial for overall flexibility and muscle health. However, it is always advisable to consult with a healthcare professional, such as a doctor or physical therapist, before starting any exercise program, especially if you are taking medication like Lipitor.

While the sources do not specifically mention stretching, they do provide some information related to muscle pain and statin use, which may indirectly relate to stretching. It is known that some individuals may experience muscle-related side effects while taking statins like Lipitor. These side effects can include muscle pain, weakness, or cramps [3].

If you are experiencing muscle pain or discomfort while taking Lipitor, it is recommended to consult with your healthcare provider. They may evaluate your symptoms and determine if any adjustments to your medication or exercise routine are necessary.

In general, when stretching or exercising while taking Lipitor or any other medication, it is important to listen to your body and start slowly. Gradually increase the intensity and duration of your stretching routine, paying attention to any discomfort or pain. If you experience any unusual or severe symptoms, it is important to seek medical advice.

Remember, the information provided here is based solely on the sources you provided. It is always best to consult with a healthcare professional for personalized advice and recommendations.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] National Center for Biotechnology Information. Statin-Associated Muscle Symptoms: A Position Paper from the LIPID Clinic. Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8714370/
[3] Harvard Health Publishing. Managing Statin Muscle Pain. Retrieved from: https://www.health.harvard.edu/pain/managing-statin-muscle-pain