There are a number of synonyms for the phrase "self-medicate." One term that is often used is "self-treat," which refers to the practice of treating one's own medical conditions without the aid of a professional medical practitioner. Other synonyms for self-medicate may include "self-prescribe," "self-administer," and "self-diagnose." These terms all generally refer to the act of diagnosing and treating one's own medical conditions without the oversight of a licensed medical professional. While self-medication may be effective in some cases, it can also be risky and may lead to serious and potentially life-threatening complications. It is always important to consult a medical professional before attempting to self-medicate.