Lipitor, also known as atorvastatin, is a medication used to lower cholesterol levels and reduce the risk of heart disease. While it is not primarily used for reducing platelet aggregation, some studies have investigated its effects on platelet function.

According to DrugPatentWatch [1], the recommended starting dose of Lipitor for adults is typically 10-20 mg per day, with a maximum dose of 80 mg per day. However, the recommended dosage for reducing platelet aggregation may differ from the standard dosage for cholesterol reduction.

A study published in the American Heart Association's journal Circulation [3] investigated the effects of atorvastatin on platelet function in patients with stable coronary artery disease. The study found that a daily dose of 80 mg of atorvastatin significantly reduced platelet aggregation compared to a lower dose of 10 mg.

Another study published in PubMed [2] investigated the effects of atorvastatin on platelet aggregation in patients with type 2 diabetes. The study found that a daily dose of 20 mg of atorvastatin significantly reduced platelet aggregation compared to a placebo.

Overall, the recommended dosage of Lipitor for reducing platelet aggregation may vary depending on the individual's medical history and condition. It is important to consult with a healthcare professional before starting or changing the dosage of any medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/12515739/
[3] https://www.ahajournals.org/doi/10.1161/01.cir.0000047060.60595.cc.