Lipitor is a medication used to lower cholesterol levels in the blood. The active ingredient in Lipitor is atorvastatin [1]. The dosage of Lipitor can affect cholesterol levels in the blood. A study published in the Journal of Clinical Lipidology found that increasing the dosage of atorvastatin led to a greater reduction in LDL cholesterol levels [2]. However, changing the dosage of Lipitor can also increase the risk of side effects. The Mayo Clinic notes that common side effects of statins, including Lipitor, include muscle pain, liver damage, and digestive problems [3]. Therefore, it is important to consult with a healthcare provider before making any changes to the dosage of Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6464917/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013