Lipitor, also known as atorvastatin, is a medication primarily used to lower cholesterol levels in the blood. It is not intended for weight loss purposes [2]. Therefore, it is not recommended to take Lipitor solely for weight loss.

The length of time a person should take Lipitor depends on their individual medical condition and the recommendation of their healthcare provider. Lipitor is typically prescribed as a long-term treatment to manage high cholesterol levels [3].

According to Drug Patent Watch, the patent for Lipitor expired in 2011, which means that generic versions of the medication are available [1]. However, it is important to consult with a healthcare provider before making any changes to medication regimens.

In conclusion, Lipitor is not intended for weight loss purposes and should only be taken as prescribed by a healthcare provider. The length of time a person should take Lipitor depends on their individual medical condition and the recommendation of their healthcare provider.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.healthline.com/health/drugs/lipitor
[3] https://www.medicalnewstoday.com/articles/lipitor