Based on the provided sources, there is no direct indication of any major interactions between vitamin C and Lipitor (atorvastatin). However, it is always recommended to consult with a healthcare professional or pharmacist before combining any medications or supplements.

The first source provided, Drug Patent Watch, does not specifically mention any interactions between vitamin C and Lipitor. It primarily provides information on drug patents and does not offer detailed drug interaction data [1].

The second source, Drugs.com, offers a drug interaction checker tool. According to the information available on this platform, there are no reported interactions between atorvastatin and vitamin C [2]. However, it is important to note that this tool is not exhaustive and may not capture all possible interactions.

The third source, a study published in the Journal of Clinical Pharmacy and Therapeutics, does not directly address the interaction between vitamin C and Lipitor. It focuses on the potential interaction between atorvastatin and grapefruit juice, which can increase the risk of adverse effects. The study does not mention any specific interactions with vitamin C [3].

While the sources do not indicate any significant interactions between vitamin C and Lipitor, it is still advisable to consult with a healthcare professional or pharmacist before combining these medications. They can provide personalized advice based on your specific medical history, current medications, and individual needs.

Sources:
[1] Drug Patent Watch. (n.d.). Vitamin C. Retrieved from https://www.drugpatentwatch.com/p/tradename/VITAMIN
[2] Drugs.com. (n.d.). Atorvastatin and Vitamin C Drug Interactions. Retrieved from https://www.drugs.com/drug-interactions/atorvastatin-with-vitamin-c-276-0-238-3823.html
[3] Chen, Y., Xiao, Y., Zhang, W., & Zhou, Z. (2014). Potential interaction between grapefruit juice and atorvastatin in Chinese patients. Journal of Clinical Pharmacy and Therapeutics, 39(4), 372-377. doi:10.1111/jcpt.12153