The dosage of Lipitor, a medication used to lower cholesterol levels, is typically determined by healthcare professionals. This includes doctors, nurse practitioners, and other qualified healthcare providers. They consider various factors such as the patient's age, medical history, current health condition, and response to treatment when determining the appropriate dosage.

Lipitor is available in different strengths, including 10 mg, 20 mg, 40 mg, and 80 mg tablets. The initial dosage is often based on the patient's cholesterol levels and the desired treatment goals. The healthcare provider may start with a lower dosage and adjust it over time to achieve the desired cholesterol-lowering effect.

The recommended dosage range for Lipitor is typically 10-80 mg per day. However, the specific dosage may vary depending on individual patient factors. For example, individuals with certain medical conditions or taking certain medications may require a lower dosage.

It is important to note that Lipitor should be taken exactly as prescribed by the healthcare provider. It is typically taken once daily, with or without food. Compliance with the prescribed dosage and instructions is crucial to ensure the medication's effectiveness and minimize the risk of side effects.

In summary, the dosage of Lipitor is determined by healthcare professionals based on various factors specific to each patient. They consider factors such as the patient's cholesterol levels, medical history, and response to treatment. It is important to follow the prescribed dosage and instructions to achieve the desired cholesterol-lowering effect.

Sources:
[1] DrugPatentWatch: Lipitor Dosage Information. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Drugs.com: Lipitor Dosage. Retrieved from https://www.drugs.com/dosage/lipitor.html
[3] National Center for Biotechnology Information: Lipitor (Atorvastatin Calcium) - StatPearls. Retrieved from https://www.ncbi.nlm.nih.gov/books/NBK430779/