Based on the information provided, there is no definitive evidence to suggest that taking multivitamins enhances Lipitor's cholesterol-lowering effect. Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol levels [1]. It works by reducing the production of cholesterol in the body [1].

Multivitamins, on the other hand, contain a variety of vitamins and minerals that are essential for various bodily functions [2]. While they can help fill nutritional gaps and support overall health, there is no evidence to suggest that they specifically enhance the cholesterol-lowering effect of Lipitor [3].

It is important to note that each individual's response to medication and supplements can vary, and it is always best to consult with a healthcare provider before starting any new supplement regimen [3].

In summary, while multivitamins can support overall health, there is no evidence to suggest that they enhance Lipitor's cholesterol-lowering effect.

Sources:

1. Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/description/drg-20065891>
2. National Institutes of Health. (2021). Multivitamin/Mineral Supplements. Retrieved from <https://ods.od.nih.gov/factsheets/MVMS-Consumer/>
3. DrugPatentWatch. (2021). Atorvastatin. Retrieved from <https://www.drugpatentwatch.com/drugs/atorvastatin>