Lipitor is a medication that belongs to the class of drugs known as statins. Statins are commonly prescribed to lower cholesterol levels in the body and reduce the risk of heart disease [3]. Lipitor, in particular, is used to lower LDL (bad) cholesterol levels and triglycerides, while also increasing HDL (good) cholesterol levels [1].

Studies have shown that statins, including Lipitor, can be effective in reducing the risk of future heart attacks and other cardiovascular events in patients who have already had a heart attack or stroke [2]. According to the British Heart Foundation, statins have been shown to reduce the risk of heart attacks and strokes by around 25% in patients who have already had a cardiovascular event [2].

However, the effectiveness of statins in preventing future heart attacks in patients who have not yet had a cardiovascular event is less clear. The Centers for Disease Control and Prevention (CDC) notes that while statins can lower cholesterol levels in patients without a history of heart disease, it is unclear whether they can actually prevent heart attacks or other cardiovascular events in these patients [3].

In conclusion, Lipitor can be effective in reducing the risk of future heart attacks and other cardiovascular events in patients who have already had a heart attack or stroke. However, its effectiveness in preventing heart attacks in patients without a history of heart disease is less clear. Patients should consult with their healthcare provider to determine whether Lipitor is an appropriate medication for their individual needs and medical history.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.bhf.org.uk/informationsupport/heart-matters-magazine/medical/statins-fact-or-fiction
[3] https://www.cdc.gov/cholesterol/docs/Statins-English.pdf