Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, there is no evidence to suggest that taking Lipitor before exercising is unsafe.

Lipitor works by inhibiting the production of cholesterol in the liver, which can lead to a decrease in the risk of heart disease and stroke [1]. However, some people may experience side effects from taking Lipitor, such as muscle pain and weakness, which can be exacerbated by exercise [3]. It is important to speak with a healthcare provider before starting any new exercise program while taking Lipitor.

A study published in the Journal of Clinical Lipidology found that exercise can actually enhance the effects of Lipitor in reducing cholesterol levels [2]. The study showed that individuals who exercised regularly while taking Lipitor had significantly lower levels of LDL cholesterol (the "bad" cholesterol) than those who did not exercise.

In summary, taking Lipitor before exercising is generally considered safe. However, it is important to speak with a healthcare provider before starting any new exercise program while taking Lipitor, as some individuals may experience side effects that could be exacerbated by exercise. Additionally, regular exercise may actually enhance the effects of Lipitor in reducing cholesterol levels [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4679305/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013