Lipitor is a commonly prescribed medication used to lower cholesterol levels in the body. It is important for patients to be aware of any restrictions that may apply to the use of Lipitor coupons. After reviewing the provided sources, here is what we found:

1. Drug Patent Watch: The source does not provide specific information about any restrictions on Lipitor coupons. It primarily focuses on the patent status and expiration date of the drug.

2. GoodRx: According to the information provided on GoodRx, Medicare coverage for Lipitor may vary depending on the specific plan. While some Medicare plans may cover Lipitor, others may not. It is advisable for patients to check with their specific Medicare plan to determine coverage details and any restrictions that may apply.

3. Lipitor Savings: The official Lipitor website offers a savings program called "Lipitor For You." This program provides eligible patients with a savings card that can be used to save on Lipitor prescriptions. However, the website does not mention any specific restrictions on the use of these savings cards.

Based on the provided sources, it does not appear that there are any specific restrictions mentioned for Lipitor coupons. However, it is always recommended for patients to check with their healthcare provider, insurance provider, or the official Lipitor website for the most up-to-date information on any potential restrictions or limitations that may apply.

Sources:
[1] Drug Patent Watch: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] GoodRx: https://www.goodrx.com/lipitor/medicare-coverage
[3] Lipitor Savings: https://www.lipitor.com/en/savings