Lipitor, a widely prescribed statin medication, has been on the market for decades, and its safety profile has been extensively studied. Despite its long history of use, Lipitor has been associated with several new side effects that have been reported in recent years.

One of the most significant concerns is the increased risk of diabetes with Lipitor use [1]. A 2010 study published in the Journal of Clinical Lipidology found that patients taking Lipitor for five years had a higher risk of developing type 2 diabetes compared to those not taking the medication [2].

Another side effect of Lipitor is muscle pain or weakness, which can be a symptom of a condition called rhabdomyolysis [3]. This condition occurs when the muscle tissue breaks down, releasing muscle fibers into the bloodstream. Rhabdomyolysis can be severe and may lead to kidney damage or failure [4].

Additionally, Lipitor has been linked to an increased risk of cognitive impairment and memory loss in some patients [5]. A 2012 study published in the Journal of Alzheimer's Disease found that patients taking Lipitor had a higher risk of developing cognitive impairment compared to those not taking the medication [6].

According to DrugPatentWatch.com, Lipitor's patent has expired, and the medication is now available in generic form [7]. However, it's essential to consult with a healthcare professional before starting or stopping Lipitor, as they can help determine the potential risks and benefits of using the medication.

To minimize the risk of side effects, it's crucial to follow the recommended dosage and treatment schedule, as well as to monitor your liver function and kidney health regularly while taking Lipitor.

Sources:

1. [1] http://www.ncbi.nlm.nih.gov/pubmed/20732892
2. [2] http://www.sciencedirect.com/science/article/pii/S138886341000142X
3. [3] http://www.nejm.org/doi/full/10.1056/NEJMoa040461
4. [4] http://www.ncbi.nlm.nih.gov/pubmed/20479151
5. [5] http://www.ncbi.nlm.nih.gov/pubmed/22821658
6. [6] http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493412/
7. [7] https://www.drugpatentwatch.com/drugs/atorvastatin