See the DrugPatentWatch profile for lipitor

There is no direct evidence to suggest that water resistance affects Lipitor's potency. Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol levels [1]. It is a stable drug that is not significantly affected by exposure to water or moisture in typical conditions [2].

However, it is important to store Lipitor in a dry place and avoid exposing it to excessive moisture or humidity, as stated in the drug's label [3]. This recommendation is a general precaution for most medications, as moisture can potentially affect the stability and potency of some drugs over time [4].

Therefore, while water resistance does not directly impact Lipitor's potency, it is still recommended to store the medication in a dry place to ensure its stability and effectiveness.

Sources:

1. Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/description/drg-20063095>.
2. DrugPatentWatch. (2021). Lipitor (Atorvastatin Calcium). Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>.
3. Pfizer. (2019). Lipitor® (atorvastatin calcium) tablets, for oral use. Retrieved from <https://www.accessdata.fda.gov/drugsatfda_docs/label/2019/020712s053lbl.pdf>.
4. National Institute on Aging. (2018). Storing Your Medicines Safely. Retrieved from <https://www.nia.nih.gov/health/storing-your-medicines-safely>.