Lipitor is a medication used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], Lipitor is a statin drug that works by inhibiting an enzyme called HMG-CoA reductase, which is responsible for the production of cholesterol in the liver. Statins are usually prescribed to patients with high cholesterol levels, and they have been shown to be effective in reducing the risk of heart disease and stroke.

However, it is not uncommon for patients to experience an increase in cholesterol levels even while taking Lipitor. According to a study published in the Journal of Lipidology [2], this can happen for several reasons, including non-adherence to the medication, changes in diet and exercise habits, and genetic factors. In some cases, the increase in cholesterol levels may be due to the development of drug resistance, which can occur when the body becomes less responsive to the medication over time.

If cholesterol levels increase while taking Lipitor, it is important to consult with a healthcare provider before making any changes to the medication regimen. According to UnityPoint Health [3], stopping statin medication abruptly can lead to a rebound effect, where cholesterol levels increase rapidly. In some cases, the healthcare provider may recommend increasing the dosage of Lipitor or switching to a different medication to achieve better cholesterol control.

In conclusion, Lipitor is a commonly prescribed medication for lowering cholesterol levels. While it is effective in many cases, some patients may experience an increase in cholesterol levels even while taking the medication. If this happens, it is important to consult with a healthcare provider before making any changes to the medication regimen. The healthcare provider may recommend increasing the dosage of Lipitor or switching to a different medication to achieve better cholesterol control.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6915405/
[3] https://www.unitypoint.org/news-and-articles/can-you-stop-taking-statins-once-you-start