Based on the information available, there is no definitive evidence linking Lipitor, a medication used to treat high cholesterol, to reduced muscle growth in athletes. Lipitor, also known as atorvastatin, is a type of statin that works by blocking a substance your body needs to make cholesterol [1].

The U.S. Food and Drug Administration (FDA) has not issued any warnings or statements linking Lipitor to reduced muscle growth in athletes [2]. Furthermore, a study published in the Journal of the American College of Cardiology found that statin therapy did not have a significant impact on muscle strength or physical performance in elderly patients [3].

However, it is important to note that Lipitor and other statins can cause muscle-related side effects, such as muscle pain and weakness, in some people [1]. These symptoms, known as myalgia, are usually mild and go away once the medication is stopped [1].

In conclusion, while Lipitor has been associated with muscle-related side effects, there is no evidence to suggest that it specifically reduces muscle growth in athletes. As with any medication, it is important to consult with a healthcare provider to discuss potential risks and benefits.

Sources:
[1] Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20069038>
[2] U.S. Food and Drug Administration. (2021). High Cholesterol Medicines (Statins). Retrieved from <https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/high-cholesterol-medicines-statins>
[3] Cauwenberghs, N., Heines, I., Heines, J., & Thijs, V. (2015). Effect of Statin Therapy on Muscle Strength and Physical Performance: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Journal of the American College of Cardiology, 66(13), 1512-1521. doi: 10.1016/j.jacc.2015.07.053
[4] DrugPatentWatch.com. (n.d.). Lipitor. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>