Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the National Health Service (NHS) [2], it is safe to take atorvastatin with antihistamines. However, it is always recommended to consult with a healthcare professional before taking any new medication, especially if you are already taking other medications.

DrugPatentWatch [1] provides information on the dosage of Lipitor for adults, which is typically 10-80 mg once daily. The specific dosage may depend on various factors such as age, gender, medical history, and other medications being taken.

It is important to note that Lipitor may interact with other medications, including ritonavir-boosted nirmatrelvir (Paxlovid) [3]. This interaction can increase the levels of Lipitor in the blood, which can increase the risk of side effects. Therefore, it is essential to inform your healthcare provider if you are taking Paxlovid or any other medication before starting Lipitor.

In conclusion, while Lipitor can be taken with antihistamines, the specific dosage may vary depending on individual factors. It is always recommended to consult with a healthcare professional before taking any new medication and to inform them of any other medications being taken to avoid any potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] https://www.covid19treatmentguidelines.nih.gov/therapies/antivirals-including-antibody-products/ritonavir-boosted-nirmatrelvir--paxlovid-/paxlovid-drug-drug-interactions/