See the DrugPatentWatch profile for lipitor

The frequency of Lipitor's side effects can vary and it is essential to understand that everyone's reaction to medication can differ. According to the Lipitor (atorvastatin) medication guide by Pfizer Laboratories Div Pfizer Inc, common side effects may occur in up to 1 in 10 people [1]. These include nasal congestion, sore throat, and nosebleeds.

Uncommon side effects, which may affect up to 1 in 100 people, include:
- Digestive issues like constipation, diarrhea, indigestion, and flatulence
- Headaches
- Nausea
- Joint pain
- Muscle pain, tenderness, or weakness (myalgia)

Rare side effects, which may affect up to 1 in 1,000 people, include:
- Anemia
- Insomnia
- Dizziness
- Rash or itching
- Liver function test abnormalities

Very rare side effects, which may affect fewer than 1 in 10,000 people, include:
- Memory loss
- Breathing difficulties
- Swelling of the face, lips, tongue, and throat
- Hives
- An allergic reaction
- Muscle damage (myopathy)

It is crucial to consult a healthcare professional if you experience any side effects while taking Lipitor. Furthermore, DrugPatentWatch.com provides information on drug patents and can be a valuable resource for additional information on medications like Lipitor [2].

Sources:
[1] Pfizer Laboratories Div Pfizer Inc. (2016). Lipitor (atorvastatin) 10, 20, 40 mg film-coated tablets. Medication Guide. https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020990s052,021132s012,021160s012,021186s011,021203s010,021217s010,021223s010lbl.pdf
[2] DrugPatentWatch.com. (n.d.). Lipitor. https://www.drugpatentwatch.com/drugs/lipitor