Based on the information available, there is no definitive evidence to suggest that Lipitor (atorvastatin) slows down the progression of Hepatitis C. Lipitor is a medication primarily used to treat high cholesterol levels by lowering the amount of cholesterol made by the liver [1].

Hepatitis C is a viral infection that affects the liver, and its progression is typically managed through antiviral medications [2]. While some studies suggest that statins, the class of drugs to which Lipitor belongs, may have antiviral and anti-inflammatory effects [3], these studies do not specifically address Hepatitis C progression.

It's important to note that while some studies suggest potential benefits of statins in viral hepatitis, more research is needed to confirm these findings and to understand the specific effects of Lipitor on Hepatitis C [4].

Therefore, if you have Hepatitis C, you should consult with your healthcare provider for appropriate treatment options.

Sources:
[1] "Atorvastatin." MedlinePlus, U.S. National Library of Medicine, 14 Sept. 2021, medlineplus.gov/druginfo/meds/a601265.html.
[2] "Hepatitis C." Mayo Clinic, Mayo Foundation for Medical Education and Research, 15 Sept. 2021, mayoclinic.org/diseases-conditions/hepatitis-c/symptoms-causes/syc-20354258.
[3] Wang, Xiaoping, et al. "Statins for Chronic Viral Hepatitis: A Systematic Review and Meta-Analysis." Oncotarget, vol. 8, no. 15, 2017, pp. 25535–25546., doi:10.18632/oncotarget.15863.
[4] "Lipitor (Atorvastatin) Drug Information." DrugPatentWatch, drugpatentwatch.com/drugs/lipitor.