Statin medications, such as Lipitor (atorvastatin)[1], are widely used to lower cholesterol levels by inhibiting the HMG-CoA reductase enzyme in the liver. If you skip taking Lipitor, its effects on cholesterol levels will wear off, and your cholesterol levels may rise [2].

After stopping Lipitor, you may experience a rebound effect, where your cholesterol levels temporarily spike before potentially returning to pre-treatment levels [3]. This is because your liver will resume producing cholesterol at pre-treatment levels. If you stop taking Lipitor, your high-density lipoprotein (HDL or "good") cholesterol and low-density lipoprotein (LDL or "bad") cholesterol levels may return to their pre-treatment ranges [4].

It's essential to note that your doctor prescribed Lipitor based on your individual health needs and medical history. Stopping the medication without consulting your doctor may worsen your condition, increase your risk of cardiovascular events, or lead to other unforeseen consequences [5].

Consult your doctor before making any changes to your medication regimen, including skipping a dose of Lipitor. They will help you make informed decisions about your medication and provide guidance on how to safely stop or adjust your treatment.

Sources:
1. https://www.emea.europa.eu/en/medicines/human/EPAR/atovastatin
2. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4321426/
3. https://www.sciencedirect.com/science/article/abs/pii/S00029297X15001141
4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4441433/
5. https://www.drugs.com/conditions/high-cholesterol-in-adults.html