Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the Drug Patent Watch [1], Lipitor is usually taken once a day, with or without food. Fish oil supplements are commonly used to improve cardiovascular health, but there is some concern about the interaction between fish oil and statins like Lipitor. According to ConsumerLab [2], statins can decrease the levels of omega-3 fatty acids in the blood, which are the beneficial components of fish oil supplements. However, the study showed that the benefits of fish oil supplements still outweigh the potential negative effects of statins. Therefore, it is generally safe to take fish oil supplements while on Lipitor, but it is recommended to discuss with a healthcare provider to ensure the proper dosage and timing of both medications. Drugs.com [3] also recommends monitoring for any signs of bleeding or bruising while taking both Lipitor and fish oil supplements.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.consumerlab.com/answers/is-it-true-that-taking-a-statin-drug-negates-the-benefits-of-taking-fish-oil-supplements/statins-effect-on-fatty-acids/
[3] https://www.drugs.com/drug-interactions/fish-oil-with-lipitor-1749-3873-276-128.html