Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels in the body. According to the sources provided, the time it takes for Lipitor to take full effect can vary depending on the individual and their specific condition.

One source states that it can take up to two weeks for Lipitor to reach its full effect in the body [1]. However, it is important to note that some individuals may experience a decrease in their cholesterol levels within a few days of starting the medication [2].

While Lipitor is generally considered safe and effective, it can cause side effects in some individuals. Common side effects of Lipitor include muscle pain, weakness, and tenderness [2]. It is important to consult with a healthcare provider if any side effects are experienced while taking Lipitor.

In conclusion, the time it takes for Lipitor to take full effect can vary, but it is generally recommended to wait up to two weeks to see the full effect of the medication. It is important to note that Lipitor can cause side effects in some individuals, and it is important to consult with a healthcare provider if any side effects are experienced.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.singlecare.com/blog/lipitor-side-effects/
[3] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects