Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels in the blood [3]. According to the Mayo Clinic, there is no specific time of day when Lipitor should be taken. However, it is important to take it at the same time every day to maintain a consistent level of the drug in the bloodstream [2]. It is generally recommended to take Lipitor once a day, either with or without food, and at a time that is convenient for the patient [3].

It is important to note that taking Lipitor can cause side effects, such as muscle pain and weakness [2]. Therefore, it is important to consult with a healthcare provider before starting Lipitor or making any changes to the dosage or timing of the medication [2].

Sources:
[2] Mayo Clinic. (2021, January 28). Statin side effects: Weigh the benefits and risks. https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] Medical News Today. (2019, August 29). Atorvastatin oral tablet. https://www.medicalnewstoday.com/articles/atorvastatin-oral-tablet
[4] Drug Patent Watch. (n.d.). Lipitor. https://www.drugpatentwatch.com/p/tradename/LIPITOR