Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels in the blood [1]. According to GoodRx, Lipitor is typically taken once a day, with or without food, and it is important to follow the dosage instructions provided by the prescribing doctor [3].

Regarding low-fat substitutes, SingleCare suggests that consuming a low-fat diet can help lower cholesterol levels in conjunction with medication like Lipitor [2]. However, it is important to note that low-fat substitutes should not be taken in place of medication like Lipitor, but rather as a supplement to medication and a healthy lifestyle [2].

It is recommended to consult with a doctor or pharmacist before making any changes to medication or diet, as they can provide personalized advice and guidance based on an individual's specific health needs and medical history.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.singlecare.com/blog/atorvastatin-alternatives/
[3] https://www.goodrx.com/conditions/high-cholesterol/statins-alternatives-medications-for-lowering-high-cholesterol