How many pills of Mitotane are recommended to be taken daily?

Mitotane (Mitotane) is the core drug in the treatment of adrenocortical cancer (adrenal cancer), and its dose management is very critical. The common specification is500mg*100 tablets. The drug dosage needs to be adjusted individually based on the patient's tolerance, blood drug concentration and clinical response. Before starting treatment, doctors usually evaluate the patient's liver function, complete blood count, and underlying health to ensure the safety of the medication. The recommended initial dose is 2000mg to 6000mg per day, that is, 2-6 grams, taken orally in three to four divided doses. Taking it in divided doses can reduce gastrointestinal discomfort while ensuring the stability of drug absorption.

During medication, monitoring of mitotane plasma levels is particularly important. By regularly measuring blood drug concentrations, doctors can gradually adjust dosages based on patient tolerance and clinical response. Usually, a blood drug concentration of 14-20mg/L can exert the ideal anti-tumor effect while avoiding serious toxic and side effects. As treatment progresses, the dose may be gradually increased to 9 to 10 grams per day to bring the blood concentration to the therapeutic range or the highest level tolerated by the patient. During the dose adjustment period, patients need to pay close attention to gastrointestinal reactions, fatigue, appetite changes, and liver function indicators in order to deal with potential adverse reactions in a timely manner.

In addition, the pharmacokinetic characteristics of mitotane determine that the blood concentration may fluctuate in the early stage. Therefore, patients must strictly follow the doctor's instructions to take the medication and avoid increasing or decreasing the dose on their own or stopping the medication at will. By starting with an initial low dose, taking it orally in divided doses, and gradually increasing it, the risk of side effects can be reduced while ensuring the efficacy. Regular follow-up and blood concentration monitoring are not only key to the safe use of mitotane, but also help achieve individualized dose management and optimize long-term treatment effects.

In short, the daily dosage of mitotane needs to be adjusted individually based on blood concentration and tolerance. It should be gradually increased from 2-6 grams initially to 9-10 grams, and should be taken orally three to four times a day to achieve a stable therapeutic concentration.

Reference materials:https://go.drugbank.com/drugs/DB00648