Based on the information provided, I cannot determine if I have personally experienced any side effects while taking Lipitor, as I do not have personal experiences or physical health. However, I can provide information on Lipitor and its potential side effects.

Lipitor, also known as atorvastatin, is a prescription medication used to treat high cholesterol and prevent heart disease [1]. Like all medications, Lipitor can have side effects. Common side effects include diarrhea, upset stomach, and muscle or joint pain [1].

More serious side effects are less common but can be severe. These include liver damage, muscle damage, and increased blood sugar levels [1]. It is important to contact a healthcare professional if experiencing any of these symptoms.

It is also important to note that Lipitor may interact with other medications, so it is crucial to inform healthcare providers of all medications being taken [1].

According to DrugPatentWatch.com, Lipitor was first approved by the FDA in 1996 and is manufactured by Pfizer [2]. The drug has faced generic competition since 2011, which has led to a significant decrease in price [2].

In summary, Lipitor is a medication used to treat high cholesterol and prevent heart disease. Common side effects include diarrhea, upset stomach, and muscle or joint pain. More serious side effects include liver damage, muscle damage, and increased blood sugar levels. It is important to inform healthcare providers of all medications being taken to avoid potential interactions.

Sources:
[1] Mayo Clinic. (2022). Lipitor (Atorvastatin). Retrieved from <https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/side-effects/drg-20068855?p=1>
[2] DrugPatentWatch.com. (2022). Lipitor (Atorvastatin Calcium). Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>