Lipitor is a brand name for the drug atorvastatin, which is a type of statin medication used to lower cholesterol levels in the blood. According to the sources provided, taking Lipitor at a specific time does not seem to affect its effectiveness.

The first source [1] provides information about the patent status of Lipitor and its generic versions. This source does not directly address the question of whether taking Lipitor at a specific time affects its effectiveness.

The second source [2] is an article from the Mayo Clinic that discusses the side effects of statin medications, including Lipitor. The article notes that statins are usually taken once a day, and that the timing of the dose is not critical. However, the article does caution that some statins may be less effective if taken with certain foods or other medications, and recommends consulting a healthcare provider about the best way to take statins.

The third source [3] is an article from GoodRx, a website that provides information about prescription drugs and prices. The article discusses the best time to take cholesterol medications, including statins like Lipitor. The article notes that some statins are more effective when taken at night, while others can be taken at any time of day. However, the article also notes that the most important factor in the effectiveness of statins is taking them consistently and as prescribed.

In summary, while there may be some variation in the optimal timing of statin medications like Lipitor, taking the medication at a specific time does not seem to significantly affect its effectiveness. It is important to take statins consistently and as prescribed, and to consult a healthcare provider about any concerns or questions regarding the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.goodrx.com/classes/statins/best-time-take-cholesterol-medication