Thyronorm 12.5 mcg (https://www.medsexporter.com/product/thyronorm-12-5-mcg/)is generally considered safe for long-term use when prescribed by a doctor for managing hypothyroidism. It contains **levothyroxine**, a synthetic thyroid hormone that helps regulate metabolism and maintain proper thyroid function. Long-term use is typically necessary for individuals with chronic thyroid issues, as stopping medication may lead to worsening symptoms like fatigue, weight gain, and depression. However, regular monitoring of **TSH levels** is crucial to avoid over- or under-treatment, which can cause heart problems or bone thinning. Always follow your doctor's guidance and report any unusual side effects for proper dose adjustments.