The recommended minimum effective dose of Lipitor, a medication used to treat high cholesterol, can vary depending on the individual and their specific medical condition. According to the drug's official website, the usual starting dose is 10 or 20 milligrams per day, taken orally, with or without food [1]. However, it's important to note that the dosage may be adjusted based on the patient's response to treatment and other factors such as age, kidney function, and the presence of other medical conditions.

It's crucial to consult with a healthcare provider to determine the most appropriate and effective dose for each individual. Self-adjusting the dosage of any medication can be dangerous and may lead to serious health complications.

In addition, it's worth noting that Lipitor, also known as atorvastatin, is a prescription medication, and its use is protected by patents. According to DrugPatentWatch.com, the patent for Lipitor expired in November 2011 in the United States [2]. This means that generic versions of the drug are now available on the market, which may be a more cost-effective option for some patients.

In summary, the recommended minimum effective dose of Lipitor is typically 10 or 20 milligrams per day, but it may vary depending on the individual's medical condition and other factors. It's essential to consult with a healthcare provider to determine the most appropriate and effective dose.

Sources:

1. [Lipitor (atorvastatin calcium) tablets, for oral use. Full Prescribing Information. Pfizer Labs.](https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020990s056,021110s025,021183s012lbl.pdf)
2. [Lipitor (Atorvastatin Calcium) Tablets. DrugPatentWatch.com.](https://www.drugpatentwatch.com/drugs/lipitor)