Lipitor is a medication used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], it typically takes 2-4 weeks to see the effects of Lipitor. However, the medication's full effect may take up to 2-3 months to become apparent. It is important to note that individual results may vary, and it is essential to follow a doctor's instructions when taking this medication.

Lipitor may cause side effects, as reported by Medical News Today [2] and SingleCare [3]. Common side effects include muscle pain, weakness, and tenderness, as well as nausea, diarrhea, and constipation. More severe side effects, such as liver damage and kidney problems, are rare but can occur. It is crucial to report any side effects to a doctor immediately.

In conclusion, Lipitor's effects may take up to 2-3 months to become apparent, but individual results may vary. It is important to follow a doctor's instructions when taking this medication and report any side effects immediately.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects
[3] https://www.singlecare.com/blog/lipitor-side-effects/