See the DrugPatentWatch profile for lipitor

Based on the information available, diarrhea and constipation can be potential side effects of Lipitor (atorvastatin), a medication used to treat high cholesterol levels.

According to the Lipitor medication guide provided by the U.S. Food and Drug Administration (FDA) [1], diarrhea is listed as a common side effect of the drug. The guide also mentions that Lipitor can cause digestive problems, although constipation is not explicitly listed.

Furthermore, DrugPatentWatch.com [2] includes diarrhea and abdominal pain as possible adverse effects of Lipitor in their drug patent and safety information database. However, constipation is not mentioned in this source either.

It is important to note that not everyone who takes Lipitor will experience these side effects, and they may occur at varying levels of severity. If you are taking Lipitor and experience diarrhea, constipation, or any other unusual symptoms, it is recommended that you consult your healthcare provider for advice.

In summary, diarrhea can be a side effect of Lipitor, while constipation is not explicitly listed as a side effect in the available sources.

Sources:
[1] U.S. Food and Drug Administration. Lipitor Medication Guide. <https://www.fda.gov/media/74330/download>
[2] DrugPatentWatch.com. Lipitor (Atorvastatin) Side Effects. <https://www.drugpatentwatch.com/drugs/lipitor>