Based on the information provided, there is no specific mention of how much beef is safe to consume while taking Lipitor (atorvastatin), a medication used to treat high cholesterol. However, the NHS resource [1] does mention that Lipitor can be taken with a wide range of medications, but it's important to inform your doctor if you're taking any other medication, including any other medicines prescribed by another doctor, bought without a prescription, herbal supplements, or complementary therapies.

The Verywell Health article [3] discusses various aspects of Lipitor, including potential food and drink interactions, such as alcohol and grapefruit juice. However, it does not specifically mention beef consumption.

In general, a balanced and varied diet is recommended for maintaining a healthy lifestyle. Consuming large amounts of red meat, such as beef, can potentially increase the risk of heart disease due to its saturated fat content [2]. However, this is not specific to Lipitor or any medication.

In conclusion, while there is no specific information on how much beef is safe to consume with Lipitor, it's always a good idea to maintain a balanced and varied diet, and to inform your doctor of any other medications or supplements you are taking.

Sources:
[1] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[2] https://www.nhs.uk/live-well/eat-well/red-meat-and-cancer-qa/
[3] https://www.verywellhealth.com/can-i-drink-wine-if-i-take-lipitor-1124044