Lipitor is a brand name for the drug atorvastatin, which is a type of statin used to lower cholesterol levels in the body. According to the first source [1], there is no information available regarding the optimal time to take Lipitor after a fatty meal. However, it is generally recommended to take Lipitor at the same time every day, with or without food.

The second source [2] discusses a study conducted by researchers at the University of Athens, which found that taking a statin like Lipitor with a high-fat meal can reduce the drug's effectiveness by up to 50%. The study suggests that it may be best to take Lipitor on an empty stomach, or at least two hours after a meal.

The third source [3] provides general information about statins and their use. It recommends taking statins at the same time each day, and advises against taking them with grapefruit juice, which can increase the risk of side effects. The article does not provide specific guidance on taking statins after a fatty meal.

In summary, while there is no specific guidance on how long to wait after a fatty meal to take Lipitor, it is generally recommended to take the drug at the same time each day, with or without food. However, a study suggests that taking Lipitor with a high-fat meal can reduce its effectiveness, so it may be best to take the drug on an empty stomach or at least two hours after a meal. It is important to follow the advice of a healthcare provider when taking any medication, including Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.reuters.com/article/us-burger-statin/burger-and-a-statin-to-go-or-hold-that-please-idUSTRE67C2GE20100813
[3] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/drug-cabinet/statins