Azacitidine injection is a medication used to treat certain types of blood disorders, including myelodysplastic syndromes (MDS) and acute myeloid leukemia (AML). The frequency of administration of azacitidine injection depends on the specific condition being treated and the treatment regimen prescribed by the healthcare provider.

According to the sources provided, the dosing schedule for azacitidine injection may vary. In general, azacitidine is administered as a subcutaneous injection or an intravenous infusion. The treatment is typically given in cycles, with each cycle lasting for a specific number of days.

The drug patent information [1] does not specifically mention the frequency of administration, but it provides information about the approved dosages and formulations of azacitidine injection.

MedlinePlus [2] mentions that azacitidine injection is usually given once a day for seven consecutive days. After this initial cycle, there is a break of about three to four weeks before starting the next cycle. The treatment cycles are repeated as recommended by the healthcare provider.

The Mayo Clinic [3] also confirms that azacitidine injection is given once daily for seven days, followed by a rest period of about three to four weeks. This treatment cycle is repeated as prescribed by the healthcare provider.

It is important to note that the specific dosing schedule for azacitidine injection may vary based on individual patient factors, such as the response to treatment and any potential side effects. Therefore, it is crucial to follow the instructions provided by the healthcare provider and to consult them for any specific dosing information.

In conclusion, azacitidine injection is typically administered once daily for seven consecutive days, followed by a rest period of about three to four weeks. This treatment cycle is repeated as recommended by the healthcare provider. It is essential to consult with a healthcare professional for personalized dosing instructions.

Sources:
[1] Drug Patent Watch. Azacitidine. Retrieved from: https://www.drugpatentwatch.com/p/tradename/AZACITIDINE
[2] MedlinePlus. Azacitidine Injection. Retrieved from: https://medlineplus.gov/druginfo/meds/a607068.html
[3] Mayo Clinic. Azacitidine (Injection Route) - Proper Use. Retrieved from: https://www.mayoclinic.org/drugs-supplements/azacitidine-injection-route/proper-use/drg-20062061