Lipitor, also known as Atorvastatin, is a medication used to lower cholesterol levels and prevent heart disease [3]. While it is generally safe to take, there are some potential side effects to be aware of [2]. According to the Mayo Clinic, common side effects of Lipitor include diarrhea, joint pain, and nausea [2]. Less common side effects may include confusion, memory loss, and muscle pain or weakness [2]. It is important to note that some people may experience serious side effects such as liver problems or an allergic reaction [2]. It is recommended to contact a healthcare provider immediately if any of these serious side effects occur [2].

Regarding the timing of when to take Lipitor, a study published in the Journal of Clinical Lipidology found that taking Lipitor at bedtime may be more effective in reducing cholesterol levels than taking it in the morning [1]. However, the study did not find any significant difference in side effects between the two timing options [1]. Therefore, it is generally safe to take Lipitor at bedtime, but it is important to follow the instructions provided by a healthcare provider [2].

In summary, while Lipitor is generally safe to take, it is important to be aware of potential side effects, including serious ones such as liver problems or an allergic reaction. Common side effects may include diarrhea, joint pain, and nausea. It is generally safe to take Lipitor at bedtime, but it is important to follow the instructions provided by a healthcare provider [1][2][3].

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.goodrx.com/atorvastatin/what-is