Ezetimibe is a medication used to lower cholesterol levels in the blood. According to the sources provided, there is no specific recommendation for how often ezetimibe should be monitored. However, there are some general guidelines that can be followed.

The first source, Drug Patent Watch [1], provides information about the patent and exclusivity of the drug, but does not mention anything about monitoring or dosing.

The second source, a book chapter from the National Center for Biotechnology Information [2], states that ezetimibe can be used alone or in combination with other cholesterol-lowering drugs, and that the dose may need to be adjusted based on the patient's response. The book chapter also notes that liver function tests should be monitored periodically, but does not specify how often.

The third source, Medscape [3], provides dosing information for ezetimibe and notes that the drug is generally well-tolerated. The article also mentions that liver function tests should be monitored periodically, but again does not specify how often.

In summary, while there is no specific recommendation for how often ezetimibe should be monitored, liver function tests should be checked periodically. Patients taking ezetimibe should also have their dose adjusted based on their response to the medication. It is important for patients to follow their healthcare provider's instructions and to report any side effects or concerns.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/EZETIMIBE
[2] https://www.ncbi.nlm.nih.gov/books/NBK532879/
[3] https://reference.medscape.com/drug/zetia-ezetimibe-342454