Yes, Lipitor (atorvastatin) dosing can go below the starting dose for cholesterol management, specifically for 150 mg. The recommended starting dose for Lipitor is typically 10-20 mg once daily, and it can be adjusted based on the patient's response and tolerability [1].

In fact, the dosage can be decreased to as low as 10 mg or even 5 mg daily, depending on the patient's needs and the treating physician's discretion. It is important to note that the lowest approved dose of Lipitor is 10 mg [2].

When considering a dosage adjustment, healthcare providers should take into account various factors, such as the patient's age, weight, liver function, other medications, and the presence of any underlying medical conditions [3].

In summary, Lipitor dosing can be adjusted below the starting dose of 150 mg, even down to 10 mg or 5 mg daily, depending on individual patient requirements and the prescribing physician's judgment.

Sources:

1. Lipitor (atorvastatin) Tablets, for Oral Use. Pfizer Labs. [Online] https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020272s052lbl.pdf
2. Atorvastatin. DrugPatentWatch.com. [Online] https://www.drugpatentwatch.com/drugs/atorvastatin
3. Atorvastatin. Mayo Clinic. [Online] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20069038?p=1