Based on the information provided, I cannot determine if Lipitor has specifically improved your stamina as an individual, as this would require a personal evaluation and medical history. However, I can provide some context regarding Lipitor and its intended uses.

Lipitor, also known as atorvastatin, is a prescription medication used to treat high cholesterol levels and reduce the risk of heart attack and stroke [1]. It belongs to a class of drugs called statins, which work by blocking a substance your body needs to make cholesterol [2]. By lowering cholesterol, Lipitor helps prevent plaque buildup in your arteries, which can lead to various cardiovascular issues.

It is important to note that Lipitor is not marketed or indicated for improving stamina or physical performance. If you have experienced an improvement in stamina while taking Lipitor, it may be coincidental or related to other factors, such as lifestyle changes or overall health improvements. Consult your healthcare provider for a personalized assessment and advice.

Sources:

1. Mayo Clinic. (2021). Lipitor (Atorvastatin). Retrieved from https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/description/drg-20063001
2. U.S. Food and Drug Administration. (2016). Lipitor (Atorvastatin Calcium) Tablets, for Oral Use. Retrieved from https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/021032s051,021078s032,021186s025lbl.pdf
3. DrugPatentWatch. (n.d.). Lipitor (Atorvastatin Calcium). Retrieved from https://www.drugpatentwatch.com/drugs/lipitor/expiration-dates