Levothyroxine serves as a synthetic replacement for the endogenous thyroid hormone thyroxine, prescribed to treat clinical hypothyroidism. Achieving therapeutic stability requires precise dosing and strict adherence to administration guidelines, specifically taking the tablet on an empty stomach at least thirty to sixty minutes before breakfast. Concomitant intake of calcium supplements, iron, or coffee can drastically impair gastrointestinal absorption, leading to fluctuating hormone levels. Symptoms of over supplementation mimic hyperthyroidism, including palpitations, anxiety, and unexplained weight loss. Regular assessment of thyroid stimulating hormone levels ensures that dosing remains optimal and tailored to the metabolic demands of the individual.