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Digoxin therapy requires regular monitoring of kidney function because the kidneys play a crucial role in the elimination of the drug from the body. In patients with compromised renal function, such as those often found among individuals with diabetes, digoxin can accumulate and lead to toxicity. This makes it essential to assess kidney health periodically, as changes in renal function can significantly alter digoxin levels, prompting adjustments in dosage to ensure safety and efficacy.

Monitoring kidney function helps avoid adverse effects and ensures that the medication remains within therapeutic levels. Regular testing allows healthcare providers to adjust the treatment plan based on the patient’s renal status and to closely observe for potential signs of toxicity, which can manifest as gastrointestinal issues, fatigue, or arrhythmias.