Generic Lipitor, also known as Atorvastatin, is a medication used to lower cholesterol levels in the blood. The drug is available in various dosage strengths, including 10 mg, 20 mg, 40 mg, and 80 mg.

According to the GoodRx Intensity Comparison Chart [2], the different dosages of Atorvastatin can be classified into three categories: low-intensity, moderate-intensity, and high-intensity. The 10 mg and 20 mg doses are considered low-intensity, while the 40 mg dose is moderate-intensity, and the 80 mg dose is high-intensity.

It is essential to note that the dosage strength of Atorvastatin may vary depending on the individual's medical condition and response to treatment. The dosage strength prescribed by the healthcare provider will depend on various factors such as age, gender, medical history, and other medications the patient is taking [3].

Furthermore, the dosage strength of Atorvastatin may also depend on the availability of the medication in the market. According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, which means that other pharmaceutical companies can produce and sell generic versions of the drug. The availability of different generic versions of Atorvastatin in the market may also result in varying dosage strengths.

In conclusion, Atorvastatin is available in different dosage strengths, including 10 mg, 20 mg, 40 mg, and 80 mg. The dosage strength prescribed may vary depending on the individual's medical condition and response to treatment. It is essential to follow the healthcare provider's instructions regarding the dosage strength and frequency of Atorvastatin intake.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/classes/statins/intensity-comparison-chart
[3] https://reference.medscape.com/drug/lipitor-atorvaliq-atorvastatin-342446