What are the side effects of Mitotane?

Mitotane (Mitotane) is an important drug in the treatment of adrenocortical cancer (adrenal gland cancer). While it exerts its efficacy, it is also inevitably accompanied by some side effects. These adverse reactions are not only related to the toxic effects of the drug itself, but also closely related to its inhibitory mechanism on the endocrine system. Understanding these side effects can help patients be aware of them during treatment and handle them in a timely manner under the guidance of a doctor.

First, the most common side effects of mitotane focus on the digestive system. Some patients may experience loss of appetite, nausea, vomiting, diarrhea, etc., which is related to the stimulating effect of the drug on the gastrointestinal tract. Mild symptoms can usually be relieved by dietary modification or auxiliary medication, but if they continue to worsen, the dose needs to be adjusted.

Secondly, mitotane may also have certain effects on the central nervous system. Some patients have reported dizziness, drowsiness, memory loss and even confusion during medication. This type of situation is related to blood drug concentration, so doctors will recommend regular testing of blood drug levels and adjustment of dosage based on monitoring results to reduce adverse effects on the nervous system.

In addition, because mitotane directly inhibits adrenocortical function, patients may experience endocrine-related side effects. Typical manifestations include adrenal insufficiency, and symptoms may include fatigue, hypotension, electrolyte imbalance, etc. Therefore, most patients require glucocorticoid replacement therapy while using mitotane to maintain the stability of hormone levels in the body.

During long-term use, mitotane may also cause dyslipidemia or changes in liver function, which need to be monitored with regular blood tests. Some patients will experience weight loss or metabolic changes, which are closely related to the drug's regulation of the endocrine axis.

It should be emphasized that although mitotane has many side effects, most cases can be managed through dose adjustment, supportive treatment and hormone replacement. Under the guidance of doctors, patients have every opportunity to minimize the trouble caused by adverse reactions while ensuring therapeutic efficacy.

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