Lipitor is a commonly prescribed medication for lowering cholesterol levels in the body [1]. While it is generally safe to take Lipitor, there are some potential side effects that users should be aware of, including muscle pain, weakness, and liver damage [2].

As for taking Lipitor before exercise, there is no specific guidance on this from the sources provided. However, it is generally recommended that individuals taking statins like Lipitor continue to exercise regularly as part of a healthy lifestyle [3].

It is important to note that individuals should not stop taking Lipitor or any other statin medication without consulting their doctor first. Suddenly stopping statin use can have negative effects on cholesterol levels and increase the risk of heart disease [3].

In conclusion, Lipitor can be safely taken before exercise, but users should be aware of potential side effects and should not stop taking the medication without consulting their doctor [1][2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start