Were lipitor's effects apparent after a certain number of days?

How soon did Lipitor (atorvastatin) start working?

Yes. In clinical studies, the cholesterol-lowering effect of Lipitor can be seen within about 2 weeks of starting treatment, with greater reductions typically continuing as therapy goes on over the following weeks [1].

Do the effects level off after a certain timeframe?

They tend to. After initial decreases are observed (around the 2-week mark), LDL cholesterol reductions generally continue through the next few weeks before reaching a more steady level [1].

What does “apparent after days” usually mean for statins?

When people ask whether effects were “apparent after a certain number of days,” the practical answer is that measurable changes in blood lipids start within days to a couple of weeks, rather than taking months. For Lipitor specifically, the commonly cited early time point is around 2 weeks [1].

Sources

[1] https://www.rxlist.com/lipitor-drug.htm