Lipitor, also known as Atorvastatin, is a medication used to lower cholesterol levels in the blood and reduce the risk of heart disease and stroke [1]. As with any medication, there are potential side effects associated with its use.

According to the Mayo Clinic, common side effects of Lipitor include muscle aches and pains, diarrhea, joint pain, and changes in some laboratory blood test results [2]. However, the majority of people who take Lipitor do not experience any serious side effects.

In rare cases, Lipitor can cause more severe side effects such as liver problems, allergic reactions, and an increased risk of developing diabetes [2]. The NHS also notes that muscle pain and weakness can be a sign of a rare but serious side effect called rhabdomyolysis, which can cause kidney damage [3].

It is important to note that Lipitor should not be taken by people with active liver disease or by women who are pregnant or breastfeeding [2]. Additionally, people taking Lipitor should avoid consuming large amounts of grapefruit juice, as it can increase the risk of side effects [3].

If you experience any side effects while taking Lipitor, it is important to speak with your healthcare provider. They can help determine whether the benefits of the medication outweigh the potential risks for your individual situation.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003
[3] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/