Lipitor is a widely used medication for lowering cholesterol levels in the body. According to the sources provided, it takes approximately one to two hours for Lipitor to be absorbed into the bloodstream after oral administration [3]. However, the absorption rate may vary depending on factors such as the patient's age, gender, and overall health condition.

The drug patent watch website states that the maximum concentration of Lipitor in the blood is achieved within one to two hours of taking the medication [1]. The British Heart Foundation also confirms that the absorption of Lipitor is relatively fast and that it is usually taken once a day, with or without food [2].

It is important to note that while Lipitor is quickly absorbed into the bloodstream, it may take several weeks for the medication to have a noticeable effect on cholesterol levels in the body. This is because the medication works by reducing the liver's production of cholesterol, and it takes time for the body to adjust to this change [2].

In conclusion, Lipitor takes approximately one to two hours to be absorbed into the bloodstream after oral administration. However, it may take several weeks for the medication to have a noticeable effect on cholesterol levels in the body. It is important to follow the dosage instructions provided by a healthcare professional and to continue taking the medication as prescribed for optimal results.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins
[3] https://www.ncbi.nlm.nih.gov/books/NBK430779/