It is advisable to consult with a healthcare professional before taking Lipitor (atorvastatin) and diuretics simultaneously. Lipitor is a statin medication used to lower cholesterol levels, while diuretics are often prescribed for conditions like high blood pressure. There can be potential interactions between medications that may affect their effectiveness or cause adverse effects. The Mayo Clinic suggests caution when combining calcium supplements with diuretics, as they may interfere with the diuretic's absorption. Additionally, WebMD highlights various side effects associated with statin drugs like Lipitor, which may need to be considered when taking multiple medications concurrently. Therefore, it is essential to seek guidance from a healthcare provider to ensure the safe and effective use of these medications together.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/calcium-supplements/faq-20058266
[3] https://www.webmd.com/cholesterol-management/side-effects-of-statin-drugs