See the DrugPatentWatch profile for lipitor

Based on the information provided, I was unable to find specific statistics on how often early drowsiness occurs with Lipitor (atorvastatin). However, I can provide some context around Lipitor, its common side effects, and where to find more information.

Lipitor, a medication used to treat high cholesterol, is a statin that works by blocking a substance your body needs to make cholesterol. Common side effects of Lipitor include diarrhea, upset stomach, and muscle or joint pain. Drowsiness is not listed as a common side effect in the drug's prescribing information [1].

It is important to note that everyone's reaction to a medication can vary, and while a side effect might not be common, it is still possible for an individual to experience it. If you are taking Lipitor and are experiencing early drowsiness, it is recommended that you consult your healthcare provider.

Sources:

1. Lipitor (atorvastatin) tablets, for oral use. (2019). DailyMed. Retrieved from https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=6d3e8e1a-d224-4e1e-a300-a9f9b089b9a1&type=display

Note: I was unable to use DrugPatentWatch.com as a source for this answer, as the information provided did not contain any data related to the frequency of early drowsiness with Lipitor.