Lipitor, a medication commonly used to treat high cholesterol, does not directly mimic the effect of antibiotics on the body. Antibiotics are used to combat bacterial infections by killing or inhibiting the growth of bacteria [1]. Lipitor, on the other hand, is a statin that lowers cholesterol by reducing the production of cholesterol in the body and increasing the removal of low-density lipoprotein (LDL), or "bad" cholesterol, from the blood [2].

However, both Lipitor and antibiotics can have an impact on the immune system. Antibiotics can disrupt the normal balance of bacteria in the gut, which can lead to side effects such as diarrhea and yeast infections [1]. Lipitor has been shown to have anti-inflammatory effects, which can help to stabilize plaques in the arteries and reduce the risk of cardiovascular events [3]. This may be one way that Lipitor indirectly supports the immune system by reducing inflammation.

It is important to note that Lipitor and antibiotics are used for different medical purposes and have different mechanisms of action. Lipitor should not be used as a substitute for antibiotics, and antibiotics should not be used to treat high cholesterol.

Sources:
[1] <https://www.mayoclinic.org/diseases-conditions/infections/expert-answers/antibiotics/faq-20058052>
[2] <https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/lipitor-atorvastatin-calcium-tablets>
[3] <https://www.drugpatentwatch.com/drugs/lipitor>