There is no direct scientific evidence to suggest that Lipitor, a medication used to treat high cholesterol, hinders the effectiveness of stretching. Lipitor, also known as atorvastatin, works by blocking a substance your body needs to make cholesterol [1].

Stretching, on the other hand, is a physical activity that involves lengthening and flexing muscles and body parts to improve flexibility and relieve tension [2]. It's a common practice in various fields such as sports, physical therapy, and dance.

While Lipitor and stretching target different areas of health, it's always important to consult with a healthcare provider or pharmacist if you have concerns about how your medication might affect other aspects of your health or lifestyle [3]. They can provide personalized advice based on your medical history and current medications.

In conclusion, based on the available information, there is no evidence to suggest that Lipitor hinders the effectiveness of stretching. However, it's always advisable to consult with a healthcare professional if you have concerns about your medication or health practices.

Sources:
[1] Mayo Clinic. (2021). Lipitor. Retrieved from https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/description/drg-20064156
[2] Verywell Fit. (2021). Stretching: Benefits, Types, and Basic Guidelines. Retrieved from https://www.verywellfit.com/stretching-guide-3120182
[3] DrugPatentWatch. (2021). Lipitor. Retrieved from https://www.drugpatentwatch.com/drugs/lipitor