Lipitor is a medication used to lower cholesterol levels in the body. It contains atorvastatin calcium as its active ingredient. According to Drug Patent Watch [1], Lipitor is approved by the US Food and Drug Administration (FDA) for use in adults and children who are at least 10 years old. However, the safety of Lipitor for children has been a topic of concern among medical professionals.

A study published in the Journal of Clinical Lipidology [3] suggests that the use of Lipitor in children can be effective in reducing cholesterol levels. The study found that atorvastatin was safe and well-tolerated in children aged 8-17 years with familial hypercholesterolemia. However, the study also recommends that the use of Lipitor in children should be carefully monitored by healthcare professionals due to the potential risk of adverse effects.

Another study published in PubMed [2] found that while atorvastatin was effective in reducing cholesterol levels in children, it also led to an increase in insulin resistance. Insulin resistance is a condition that can lead to type 2 diabetes. The study suggests that the long-term use of Lipitor in children should be carefully monitored due to the potential risk of developing insulin resistance.

In conclusion, Lipitor is approved for use in children aged 10 years and older. Studies suggest that it can be effective in reducing cholesterol levels in children with familial hypercholesterolemia. However, the use of Lipitor in children should be carefully monitored by healthcare professionals due to the potential risk of adverse effects, including insulin resistance. Parents should discuss the risks and benefits of Lipitor with their child's healthcare provider before starting treatment.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/27678432/
[3] https://www.sciencedirect.com/science/article/pii/S1933287416302197