Based on the provided sources, it is clear that Lipitor, a brand name for the drug atorvastatin, has been found to be effective in reducing cholesterol levels and preventing cardiovascular diseases. Lipitor is a statin medication that works by inhibiting an enzyme involved in cholesterol production .
The first source, DrugPatentWatch, provides information on the patent status of Lipitor. While the patent for Lipitor expired in 2011, it does not indicate the effectiveness or ineffectiveness of the drug .
The second source, an article from NPR, discusses a study comparing statins like Lipitor to dietary supplements for cholesterol management. The study found that statins were vastly superior to supplements in lowering cholesterol levels and reducing the risk of cardiovascular events . This suggests that Lipitor, as a statin medication, is effective in its intended purpose.
The third source, a research article from the National Center for Biotechnology Information (NCBI), discusses the efficacy and safety of atorvastatin (Lipitor) in reducing low-density lipoprotein cholesterol (LDL-C). The study concludes that atorvastatin is highly effective in reducing LDL-C levels and has a good safety profile . This further supports the effectiveness of Lipitor in managing cholesterol levels.
In summary, based on the provided sources, there is no evidence to suggest that Lipitor is not effective. On the contrary, Lipitor, as a statin medication, has been found to be effective in reducing cholesterol levels and preventing cardiovascular diseases. It is important to note that individual responses to medications may vary, and it is always recommended to consult with a healthcare professional for personalized advice and treatment options.
 DrugPatentWatch: Lipitor - https://www.drugpatentwatch.com/p/tradename/LIPITOR
 NPR: Statins Vs. Supplements: New Study Finds One Is Vastly Superior To Cut Cholesterol - https://www.npr.org/sections/health-shots/2022/11/06/1134094540/statins-vs-supplements-new-study-finds-one-is-vastly-superior-to-cut-cholesterol
 NCBI: Efficacy and Safety of Atorvastatin in Reducing LDL-Cholesterol: A Review - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5514478/