Unfortunately, the sources provided do not contain information on how to enroll in the Lipitor Loyalty Program. However, the Lipitor website does offer information on how to save on your Lipitor prescription. By visiting https://www.lipitor.com/en/savings, you can access a savings card that can be used at most pharmacies to save on your prescription. Additionally, you may want to speak with your healthcare provider about other options for saving on your prescription. It is also worth noting that the Krispy Kreme Rewards program, mentioned as a source, is not related to the Lipitor Loyalty Program or Lipitor in any way.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.lipitor.com/en/savings
[3] https://www.krispykreme.com/rewards