Lipitor is a medication used to lower cholesterol levels in the body. According to Drug Patent Watch [1], it contains atorvastatin, which works by blocking an enzyme that produces cholesterol in the liver. While it is generally considered safe, there are potential side effects that can occur. The Mayo Clinic [2] notes that some common side effects of Lipitor include muscle aches and pains, nausea, diarrhea, and constipation. More serious side effects are rare, but can include liver damage, muscle breakdown, and an increased risk of diabetes.

As for taking vitamins with Lipitor, SingleCare [3] advises that some vitamins and supplements can interact with the medication, potentially causing side effects. For example, taking large doses of vitamin D or calcium supplements while on Lipitor can increase the risk of muscle pain and weakness. Additionally, grapefruit and grapefruit juice can also interact with Lipitor, causing higher levels of the medication to remain in the body and increasing the risk of side effects.

It is important to talk to a healthcare provider before taking any new medications or supplements, especially if you are already taking Lipitor. They can advise you on potential interactions and help you determine the best course of treatment for your specific needs.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.singlecare.com/blog/atorvastatin-interactions/