Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the blood. According to the drug patent watch website [1], Lipitor works by blocking the production of cholesterol in the liver, which can help reduce the risk of heart disease.

While there is no direct evidence to suggest that Lipitor can affect high-intensity workouts, some studies have shown that statins, including Lipitor, may cause muscle damage and weakness in some people [2]. This muscle damage is known as myopathy and can cause symptoms such as muscle pain, tenderness, and weakness. In rare cases, statins can also cause a more severe form of muscle damage called rhabdomyolysis, which can lead to kidney failure.

However, it is important to note that not everyone who takes statins will experience muscle damage or weakness. According to the Mayo Clinic [3], the risk of developing muscle problems from statins is generally low, and the benefits of taking these medications usually outweigh the risks.

If you are concerned about the potential effects of Lipitor on your high-intensity workouts, it is recommended that you speak with your doctor. Your doctor can help determine if Lipitor is the right medication for you and can monitor you for any potential side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949584/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013