Lipitor is a prescription medication used to lower cholesterol levels in the blood. It works by inhibiting an enzyme in the liver that is responsible for producing cholesterol [1]. According to Drugs.com, there are no known interactions between Lipitor and potassium-based salt substitutes [3]. However, it is important to note that salt substitutes may contain high levels of potassium, which can be harmful to people with kidney problems or those taking certain medications, such as ACE inhibitors or potassium-sparing diuretics [2]. Therefore, it is important to consult with a healthcare provider before using salt substitutes if you are taking Lipitor or any other medication. Additionally, it is important to follow a healthy diet and lifestyle, including reducing sodium intake and increasing physical activity, to manage cholesterol levels and overall health [2].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.pritikin.com/your-health/healthy-living/eating-right/salt-substitutes-safe.html
[3] https://www.drugs.com/drug-interactions/lipitor-with-losartan-276-128-1489-0.html