I'm sorry, but based on the sources you provided, I cannot provide a specific answer to your question about the dosage of Lipitor you were previously taking.

The first source you provided, Drug Patent Watch [1], is a website that provides information on drug patents and their expiration dates. It does not provide information on dosages or usage of drugs.

The second source, NHS [2], provides general information on atorvastatin, the generic name for Lipitor, including how and when to take it. However, it does not provide specific information on dosages for individual patients.

The third source, Mayo Clinic [3], provides information on statins, a class of drugs that includes atorvastatin. The article discusses the benefits and risks of statins, as well as how they work and how they are prescribed. However, it does not provide information on individual dosages.

If you have questions about your specific dosage of Lipitor, it is best to consult with your healthcare provider. They can provide you with personalized information and advice based on your individual needs and medical history.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/how-and-when-to-take-atorvastatin/
[3] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statins/art-20045772