Lipitor is a medication used to lower cholesterol levels in the blood. There are no dosage restrictions for Lipitor with salt substitutes mentioned in the provided sources. However, it is important to note that certain foods and medications can interact with Lipitor and affect its effectiveness or increase the risk of side effects.

According to the drug label provided by the FDA [3], Lipitor should not be taken by individuals who are allergic to atorvastatin or any of its ingredients. Lipitor is also contraindicated in patients with active liver disease or unexplained persistent elevations in serum transaminases.

Medscape [2] notes that Lipitor should be taken once daily, with or without food, and should be taken at the same time each day. The starting dose and maintenance doses of Lipitor should be individualized according to patient characteristics such as age, gender, and race.

Drug Patent Watch [1] provides information on the patent status of Lipitor. The patent for Lipitor expired in November 2011, which means that generic versions of the medication are available.

In conclusion, there are no dosage restrictions for Lipitor with salt substitutes mentioned in the provided sources. However, it is important to follow the recommended dosing instructions and to inform your healthcare provider of any medications or supplements you are taking to avoid potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446
[3] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s056lbl.pdf