mobic and Hyponatremia

People with schizophrenia and medical comorbidities are often on multiple medications to manage their symptoms. Herein we present a case of drug-drug interaction (meloxicam and desmopressin), in a patient also on clozapine, that ultimately resulted in hyponatremia and seizure.. The patient provided consent to have his case published. We searched PubMed and after reviewing 321 articles, 11 were chosen for relevance.. Meloxicam enhanced the adverse effect (hyponatremia) of desmopressin and was the likely culprit.. In a patient with higher ADH levels, as in our patient taking desmopressin, the addition of an NSAID could further increase water retention and worsen hyponatremia; indeed, meloxicam was the only new medication added to the patient's regimen, and a drug interaction calculator supports the desmopressin-meloxicam drug-drug interaction as the culprit. We urge clinicians to avoid the use of desmopressin in patients with schizophrenia as this can lead to water intoxication. As meloxicam may worsen desmopressin-induced hyponatremia and could result in seizure, one should avoid using NSAIDs in patients with schizophrenia whom are also prescribed vasopressin/desmopressin. Serum sodium levels should be closely monitored in patients with schizophrenia whose regimen includes desmopressin.

Topics: Anti-Inflammatory Agents, Non-Steroidal; Antidiuretic Agents; Deamino Arginine Vasopressin; Drug Interactions; Drug-Related Side Effects and Adverse Reactions; Humans; Hyponatremia; Male; Meloxicam; Middle Aged

Hyponatremia (serum sodium level, <135 mmol/L) occasionally may develop in the course of treatment with nonsteroidal anti-inflammatory drugs, which are usually used in daily clinical practice. Nonsteroidal anti-inflammatory drugs diminish the normal inhibitory effect of prostaglandins on the activity of antidiuretic hormone and can therefore reduce free water excretion, leading to water retention and induction or exacerbation of hyponatremia. In this report, we present a case of hyponatremia in a 78-year-old man who had received meloxicam, a nonsteroidal anti-inflammatory drug.

Topics: Aged; Anti-Inflammatory Agents, Non-Steroidal; Back Pain; Chronic Pain; Humans; Hyponatremia; Male; Meloxicam; Sodium; Thiazines; Thiazoles