Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to Drugs.com [2], it is generally recommended to take Lipitor with or without food, as food does not significantly affect the absorption of the medication. Therefore, it is safe to snack after taking Lipitor. However, it is important to note that some foods may interact with Lipitor and affect its effectiveness. For example, grapefruit and grapefruit juice can increase the levels of Lipitor in the blood and increase the risk of side effects [2][3]. It is recommended to avoid grapefruit and grapefruit juice while taking Lipitor. Additionally, Lipitor can cause side effects such as muscle pain, weakness, and tenderness, and it is important to contact a healthcare provider if these side effects occur [3]. Overall, it is safe to snack after taking Lipitor, but it is important to be mindful of any potential food interactions and to contact a healthcare provider if any concerning side effects occur.

Sources:
[2] "Can I eat food after taking atorvastatin?" Drugs.com, 28 May 2020, https://www.drugs.com/medical-answers/eat-food-taking-atorvastatin-3565628/.
[3] "Atorvastatin: side effects, dosage, uses, and more." NHS, 20 Apr. 2020, https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/.
[1] "LIPITOR Trademark of Warner-Lambert Company LLC." Drug Patent Watch, https://www.drugpatentwatch.com/p/tradename/LIPITOR.