Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. While there are no specific precautions to take while swimming on Lipitor, it is important to be aware of the potential side effects and interactions of the drug.

One possible side effect of Lipitor is muscle pain or weakness [1]. If you experience any muscle pain or weakness while swimming, you should stop immediately and seek medical attention. Additionally, Lipitor may increase the risk of developing a transient ischemic attack (TIA) or stroke in some patients [2]. If you have a history of TIA or stroke, you should talk to your doctor before swimming while taking Lipitor.

Another potential concern when taking Lipitor is the interaction with grapefruit juice [3]. Grapefruit juice can increase the level of Lipitor in your blood, which can increase the risk of side effects. It is recommended that you avoid grapefruit juice while taking Lipitor.

In summary, there are no specific precautions to take while swimming on Lipitor. However, it is important to be aware of the potential side effects and interactions of the drug, including muscle pain or weakness, an increased risk of TIA or stroke, and the interaction with grapefruit juice.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/conditions/transient-ischaemic-attack-tia/treatment/
[3] https://www.health.harvard.edu/heart-health/grapefruit-juice-and-statins