Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood [1]. Amlodipine is a medication used to treat high blood pressure [2]. According to Mayo Clinic, there are no known interactions between amlodipine and atorvastatin [2]. However, it is always recommended to consult with a healthcare provider before starting or stopping any medications. It is important to note that combining drugs that lower blood pressure and cholesterol could be beneficial in preventing strokes, according to a study by the American Heart Association [3].

In summary, there are no known interactions between Lipitor (atorvastatin) and amlodipine, but it is important to consult with a healthcare provider before starting or stopping any medications. Combining drugs that lower blood pressure and cholesterol could be beneficial in preventing strokes, according to a study by the American Heart Association.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/amlodipine-and-atorvastatin-oral-route/precautions/drg-20062902?p=1
[3] https://newsroom.heart.org/news/combining-drugs-that-lower-blood-pressure-and-cholesterol-could-do-more-to-prevent-stroke