The time it takes for Lipitor (atorvastatin) to lower cholesterol levels, particularly in relation to consuming fatty meats, depends on various factors, including the individual's starting cholesterol levels, diet, and overall health.

Lipitor is a statin medication that works by inhibiting the production of an enzyme called HMG-CoA reductase, which plays a key role in cholesterol synthesis. By reducing the liver's production of cholesterol, Lipitor helps to decrease the levels of low-density lipoprotein (LDL) or "bad" cholesterol in the blood [1].

According to DrugPatentWatch.com, the standard dosage of Lipitor for adults ranges from 10 mg to 80 mg per day, taken once in the evening [2].

When it comes to consuming fatty meats, a study published in the Journal of the American College of Cardiology found that consuming high-fat meals can raise LDL cholesterol levels, particularly when taken in the context of high-cholesterol foods [3].

However, Lipitor's effectiveness in countering these effects is seen relatively quickly, as one study reported that taking statins like Lipitor resulted in average LDL cholesterol reductions of around 40-60% within 4-6 weeks after starting treatment [1].

It's essential to note that the impact of Lipitor on cholesterol levels after consuming fatty meats will vary from person to person, and may not follow a standard timeline.

Sources:

[1] https://www.drugpatentwatch.com/patents/US-5045344 - Lipitor (Atorvastatin)

[2] https://www.drugpatentwatch.com/patent-expiration/lipitor - Lipitor (Atorvastatin)

[3] https://www.onlinejacc.org/content/early/2018/07/24/j.jacc.2018.04.077 - The impact of dietary patterns on cardiovascular outcomes in adults.