Lipitor (atorvastatin) is a prescription medication used to lower cholesterol levels in the blood. The recommended starting dose for most adults is 10-20 mg once daily, and the maximum dose is 80 mg once daily [3]. However, the dosage may vary depending on the patient's medical history and the severity of their condition. It is important to follow the doctor's instructions and not to change the dosage without consulting them first [2].

Vitamin C is a water-soluble vitamin that plays an essential role in the human body. The recommended daily intake of vitamin C for adults is 75-90 mg/day for women and men, respectively [2]. However, some people may require higher doses of vitamin C, such as smokers, pregnant women, and people with certain medical conditions [2].

There is no known interaction between Lipitor and vitamin C [1]. However, it is important to talk to your doctor or pharmacist before taking any new medication or supplement, including vitamin C, to avoid potential interactions or side effects.

In conclusion, the recommended dosage for Lipitor is 10-80 mg once daily, depending on the patient's medical history and condition. The recommended daily intake of vitamin C for adults is 75-90 mg/day, but some people may require higher doses. There is no known interaction between Lipitor and vitamin C, but it is important to consult with a healthcare professional before taking any new medication or supplement.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/books/NBK548236/
[3] https://www.accessdata.fda.gov/drugsatfda_docs/label/2009/020702s056lbl.pdf