Lipitor is a brand name for atorvastatin, which is a type of statin drug used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], Lipitor should be taken once a day, preferably at the same time every day, with or without food.

Fish oil is a dietary supplement that contains omega-3 fatty acids, which have been shown to have potential health benefits, including reducing the risk of heart disease. A study published in the New York Times [2] suggests that taking fish oil supplements with statins, such as Lipitor, may help to further reduce the risk of heart disease. However, the study also suggests that taking fish oil supplements alone is not as effective as taking statins.

Medical News Today [3] notes that there is no specific timing requirement for taking fish oil supplements. However, it is generally recommended to take them with meals to improve absorption and reduce the risk of gastrointestinal side effects.

In conclusion, Lipitor should be taken once a day, preferably at the same time every day, with or without food. There is no specific timing requirement for taking fish oil supplements, but it is generally recommended to take them with meals. Taking fish oil supplements with statins, such as Lipitor, may help to further reduce the risk of heart disease.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nytimes.com/2023/03/01/well/eat/statins-supplements-cholesterol.html
[3] https://www.medicalnewstoday.com/articles/fish-oil-vs-statins