Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels in the body [1]. Statins are known to have several side effects, including muscle pain and weakness, which can negatively impact muscle growth [2].

A study published in the Journal of Cachexia, Sarcopenia and Muscle found that statins, including atorvastatin, can decrease muscle mass and strength in patients with heart failure [2]. The study suggests that statins can lead to a decrease in the production of a protein called myostatin, which regulates muscle growth and development [2].

Another study conducted by researchers at the Max Delbrück Center for Molecular Medicine in Berlin found that statins can cause changes in the metabolism of muscle cells, leading to decreased energy production and impaired muscle function [3]. The study suggests that these changes may contribute to the muscle pain and weakness commonly associated with statin use [3].

In conclusion, Lipitor (atorvastatin) is a type of statin that can negatively impact muscle growth and development. Studies suggest that statins can decrease muscle mass and strength, and cause changes in muscle cell metabolism that can lead to impaired muscle function and energy production [2][3]. Patients taking Lipitor or other statins should discuss any concerns about muscle growth or other side effects with their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/
[3] https://www.mdc-berlin.de/news/press/what-statins-do-muscles