Lipitor is a prescription medication used to lower cholesterol levels in the blood. It belongs to a class of drugs called statins and is sold under the generic name atorvastatin [1]. As with any medication, Lipitor can cause side effects, and the severity and duration of these side effects can vary from person to person.

According to the Mayo Clinic [2], some common side effects of Lipitor include muscle and joint pain, diarrhea, constipation, nausea, and headache. These side effects usually occur within the first few weeks of taking the medication and often go away as the body adjusts to the drug. However, if these side effects persist or become severe, it is important to speak with a healthcare provider.

In addition to the common side effects, Lipitor can also cause more serious side effects, such as liver damage, muscle damage, and an increased risk of diabetes [3]. These side effects are rare, but they can occur at any time during treatment. Therefore, it is essential to monitor any changes in health while taking Lipitor and to report any concerning symptoms to a healthcare provider immediately.

In conclusion, the side effects of Lipitor can occur at any time during treatment, but most commonly occur within the first few weeks of taking the medication. While some side effects are mild and go away on their own, others can be severe and require medical attention. It is essential to monitor any changes in health while taking Lipitor and to report any concerning symptoms to a healthcare provider immediately.

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.medicalnewstoday.com/articles/drugs-lipitor-side-effects