When taking Lipitor (atorvastatin), it is important to be aware of potential interactions with other over-the-counter (OTC) medications. While the sources you provided offer valuable information, it is essential to consult with a healthcare professional or pharmacist for personalized advice.

According to the sources, there are a few OTC medications that may interact with Lipitor:

1. Nonsteroidal anti-inflammatory drugs (NSAIDs): NSAIDs such as ibuprofen and naproxen can increase the risk of muscle-related side effects when taken with Lipitor. These side effects include muscle pain, weakness, and the rare but serious condition called rhabdomyolysis. It is advisable to consult with a healthcare professional before combining these medications [2][3].

2. Antacids: Some antacids that contain aluminum or magnesium hydroxide can decrease the absorption of Lipitor, potentially reducing its effectiveness. If you need to take an antacid, it is recommended to separate the timing of Lipitor and antacid consumption. Taking Lipitor at least two hours before or after an antacid can help minimize this interaction [3].

3. St. John's Wort: St. John's Wort is an herbal supplement used for depression. However, it can increase the breakdown of Lipitor in the body, potentially reducing its effectiveness. It is important to avoid combining Lipitor with St. John's Wort or any other herbal supplements without consulting a healthcare professional [3].

It is worth noting that these are not the only potential interactions, and there may be other OTC medications that could interact with Lipitor. Therefore, it is crucial to disclose all medications, including OTC medications and supplements, to your healthcare provider or pharmacist before starting Lipitor or any other prescription medication.

In summary, while Lipitor is generally safe and well-tolerated, it is important to be cautious when combining it with certain OTC medications. Consult with a healthcare professional or pharmacist for personalized advice and to ensure the safe and effective use of Lipitor.

Sources:
[2] Drug Patent Watch. Lipitor. Retrieved from: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[3] GoodRx. Atorvastatin Interactions. Retrieved from: https://www.goodrx.com/atorvastatin/interactions
[4] NHS. Atorvastatin: Taking atorvastatin with other medicines and herbal supplements. Retrieved from: https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/