The term “treatment cycle” is often used in reference to chemotherapy or molecularly targeted drugs.
Generally, the first day of a treatment cycle is designated as D1, the second day as D2, and so on.
Medications have specific days for administration, following established patterns in medical literature. For example, a certain medication may be given on D1 and D8, while another may be administered from D1 to D5.
It is important to note that the cancer treatment cycle can vary from patient to patient and is adapted according to each individual’s responses to the treatment and side effects.