Lipitor is a medication that is used to lower cholesterol levels in the body. It belongs to a class of drugs known as statins. According to [2], Lipitor is known to cause a range of side effects, including weight gain. However, the incidence of weight gain as a side effect of Lipitor is relatively low, and it is not a common side effect of the medication.

Weight gain is not listed as a common side effect of Lipitor, according to [3]. However, some people may experience weight gain as a result of taking the medication. This may be due to a number of factors, including changes in appetite or metabolism.

According to [1], Lipitor is not associated with weight gain in clinical trials. However, the medication has been linked to a range of other side effects, including muscle pain, liver damage, and kidney problems.

In conclusion, while weight gain is not a common side effect of Lipitor, some people may experience it as a result of taking the medication. The incidence of weight gain as a side effect of Lipitor is relatively low, and it is not a common side effect of the medication. It is important to talk to your doctor if you experience any side effects while taking Lipitor.

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