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Foamy Urine
Started taking these psyciatric medicines few months ago : Mirtazapine,Bupropion HCL,Divalproex Sodium & Flupentixol & Melitracen
Noticing foamy urine after few days since then
Serum creatinine,BUN,potassium,urine acr,24 hrs urine protein,urine culture,urine routine & usg are all normal
Can these medicines cause foamy urine or can these medicines cause dehydration which leads to foamy urine ?
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Usually these medications are not associated with this side effect
* Investigations are normal like KFT, USG , urine culture, BP monitoring RBS can be done
Further, include fluid rich diet and fruit, avoid oily spicy food
Gradually in follow up visits, with discussion with psychiatrist try to taper medication one by one as per symptoms profile and improvement
Answered
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The psychiatric medicines listed (Mirtazapine, Bupropion, Divalproex sodium, Flupentixol, Melitracen) are not known to directly cause foamy urine as a common side effect. Since your kidney function tests, urine protein levels, and ultrasound are all normal, serious kidney problems are unlikely.
Foamy urine can happen due to:
• Concentrated urine from mild dehydration (common if fluid intake is low, or due to hot weather, caffeine, or certain medications that reduce appetite or increase urination).
• Rapid urine flow which traps air and causes bubbles.
• Benign transient proteinuria (temporary, non-harmful protein in urine).
Some medicines may indirectly contribute by causing dry mouth, reduced thirst, or mild diuresis, which can lead to concentrated urine and visible foam.
Next Steps
Next Steps:
• Ensure adequate hydration (2–2.5 L fluids/day unless restricted for another reason).
• Monitor urine appearance and repeat urine protein testing if foaminess persists or worsens.
• Seek review if you notice swelling in legs/face, frothy urine with reduced volume, or any new symptoms.
• Continue psychiatric medicines unless your treating psychiatrist advises a change.
Health Tips
Helpful Tip:
Foamy urine in the absence of proteinuria or abnormal kidney tests is usually benign . Keeping well hydrated often helps.
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The psychiatric medications you’ve listed (mirtazapine, bupropion, divalproex sodium, flupentixol, melitracen) are not commonly associated with causing foamy urine directly. Foamy urine is most often due to the presence of protein in urine, rapid urination, or dehydration.
Since your kidney function tests, urine protein levels, urine ACR, 24-hour protein, and imaging are all normal, significant kidney disease is unlikely. Mild dehydration from factors like reduced fluid intake, hot weather, or increased activity could make urine more concentrated, which may cause temporary foaming.
Some of these medicines (e.g., bupropion, mirtazapine) may cause mild dry mouth or reduced fluid intake in some people, which could indirectly increase urine concentration.
Next Steps
• Ensure adequate daily water intake (2–3 liters/day unless medically restricted).
• Monitor for new symptoms (swelling, persistent change in urine color, burning, or blood in urine).
• If foamy urine becomes persistent, increases, or is accompanied by other symptoms, repeat urine tests and kidney evaluation.
• Continue regular follow-up with your treating doctor.
Health Tips
Foamy urine is most often harmless when kidney tests are normal, but stay alert for changes such as swelling of feet/face, persistent increase in foam, change in urine color, blood in urine, or reduced urine output. If any of these occur, seek medical review promptly, as they may indicate early kidney involvement or another underlying condition. Maintain good hydration and continue regular follow-up with your doctor while on these medications.
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