I have stage 4 esophageal cancer, that has mestasized to my liver. My first chemo treatment is tomorrow. The doctor has given me scripts for prochlorperazine 10mg and hdrocodone/APAP 10-325 mg which instructs not to take with the prochlorperazine. I am only taking the hydrocod/APAP now. How much time in between them do I have to leave?