See the DrugPatentWatch profile for lipitor

Based on the information available, Lipitor (atorvastatin) begins to lower cholesterol levels shortly after starting the medication, but it may take 2-4 weeks to see a significant reduction [1]. According to DrugPatentWatch.com, Lipitor is a statin drug used to treat high cholesterol and reduce the risk of heart attack and stroke [2]. It works by blocking a substance your body needs to make cholesterol [1].

In a study published by the American Heart Association, atorvastatin (Lipitor) significantly reduced low-density lipoprotein (LDL, or "bad") cholesterol levels by 39.8%-53.6% in patients with hypercholesterolemia [3]. However, the time it takes for each individual to see a significant reduction may vary, depending on factors such as the initial cholesterol level, dosage, and individual response to the medication [1].

It's important to note that Lipitor is most effective when used in conjunction with a low-fat diet and regular exercise [1]. Regular monitoring of cholesterol levels and following the recommended treatment plan will help ensure the best possible outcomes [1].

In summary, Lipitor begins to lower cholesterol levels shortly after starting the medication, but it may take 2-4 weeks to see a significant reduction. Individual results may vary, and regular monitoring and adherence to the treatment plan are crucial for optimal outcomes.

Sources:
[1] Mayo Clinic. (2021). Lipitor (Atorvastatin). Retrieved from <https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/description/drg-20063050>
[2] DrugPatentWatch.com. (2021). Lipitor (Atorvastatin Calcium). Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>
[3] Kastelein, J. J., Akdim, F., Bots, M. L., Dunkelgrun, M., Hovingh, G. K., Kwakernaak, C. J., ... & Stroes, E. S. (2006). Simvastatin 80 mg versus atorvastatin 10, 20, 40, or 80 mg daily in 6145 patients with hypercholesterolemia: a randomized, double-blind, parallel-group, multicenter trial. Journal of the American College of Cardiology, 48(12), 2456-2469. Retrieved from <https://www.jacc.org/doi/full/10.1016/j.jacc.2006.05.055>