The efficacy as well as the side effects of imported or domestic exemestane tablets are similar, and its common side effects include insomnia, hot flashes, fatigue, and headache. Exemestane Tablet is an irreversible steroidal aromatase inhibitor, which is mainly used in the adjuvant treatment of some early invasive breast cancers as well as the treatment of some advanced breast cancers. Side effects are similar for both imported and domestic versions of this product, with mild to moderate hot flashes, arthralgia, fatigue, headache, insomnia, and increased sweating being the most commonly observed side effects. It is contraindicated in patients who are allergic to the product, premenopausal women, pregnant and lactating women. It is recommended to use the medication as prescribed under the supervision of a physician, and to consult a physician promptly if significant discomfort occurs after use.