Based on the information available, there are generally no side effects when taking Lipitor (atorvastatin) with dairy products. Lipitor is a medication used to lower cholesterol levels, and it's recommended to be taken consistently, preferably at the same time each day, with or without food [1].

Dairy products, such as milk, cheese, and yogurt, are not known to interact with Lipitor. However, it's always important to consult with a healthcare provider or pharmacist for personalized advice, as individual reactions can vary [2].

It's also worth noting that, according to DrugPatentWatch.com, Lipitor's patent expired in 2011, which led to the introduction of generic atorvastatin [3]. This means that patients can access the medication at a potentially lower cost.

In summary, there are typically no side effects when taking Lipitor with dairy. However, it's always advisable to consult with a healthcare provider or pharmacist for personalized advice.

Sources:
[1] Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20064556?p=1
[2] RxList. (2021). Lipitor Side Effects, Interactions, Warning, Dosage. Retrieved from https://www.rxlist.com/lipitor-side-effects-drug-center.htm
[3] DrugPatentWatch.com. (2021). Lipitor (Atorvastatin) Drug Patent Expiration, Generic Launch Dates. Retrieved from https://www.drugpatentwatch.com/drugs/lipitor