WHEN THYROID TREATMENT TURNS TOXIC: THE HIDDEN DANGERS OF IMPURITIES IN LEVOTHYROXINE TABLETS

Major Side Effects of Impurities in Levothyroxine Tablets Levothyroxine is a synthetic thyroid hormone widely prescribed for hypothyroidism and other thyroid-related disorders. Because it's a narrow therapeutic index (NTI) drug, even minor variations in dose or purity can lead to serious—and sometimes life-threatening—health consequences.