Drug Class: Potassium-Sparing Diuretic + Loop Diuretic Combination | Form: Oral Tablet | Prescription Status: Prescription Only (Rx) — DRAP Registered
What is Spiromide Tablet? Spiromide contains Spironolactone 50mg and Furosemide 20mg — a clinically rational fixed-dose combination of two diuretics with complementary and opposing mechanisms that together produce more effective fluid removal than either medicine alone while simultaneously balancing each other's potassium effects. Furosemide is a powerful loop diuretic that rapidly removes excess fluid but causes dangerous potassium loss — while Spironolactone is a potassium-sparing aldosterone antagonist that enhances sodium and water excretion while conserving potassium. By combining both in a single tablet, Spiromide achieves stronger diuresis than either medicine alone while the potassium-losing effect of Furosemide and the potassium-retaining effect of Spironolactone partially offset each other — significantly reducing the risk of dangerous electrolyte imbalances that occur with loop diuretics used alone. This makes Spiromide particularly valuable for oedematous conditions requiring sustained intensive diuretic therapy.
What is Spiromide Tablet Used For?
- Oedema in congestive heart failure — fluid retention and ankle swelling (دل کی کمزوری میں سوجن کا علاج)
- Ascites in liver cirrhosis — abdominal fluid accumulation in chronic liver disease (جگر کی بیماری میں پیٹ میں پانی بھرنا)
- Oedema in nephrotic syndrome — kidney disease-related fluid retention (گردے کی بیماری میں سوجن)
- Hypertension with fluid retention — oedematous hypertension requiring combined diuretic approach (سوجن کے ساتھ ہائی بلڈ پریشر)
- Refractory oedema — fluid retention not responding adequately to single diuretic therapy
- Secondary hyperaldosteronism — excess aldosterone from heart failure or liver disease causing resistant fluid retention
How Does it Work? Furosemide 20mg inhibits the Na-K-2Cl cotransporter in the thick ascending limb of the Loop of Henle — the most powerful site of sodium reabsorption in the kidney. This produces rapid and potent natriuresis and diuresis — removing large volumes of sodium and water from the body but simultaneously causing significant potassium and magnesium losses through the same tubular mechanism. Spironolactone 50mg competitively blocks aldosterone receptors in the distal tubule and collecting duct — preventing aldosterone-stimulated sodium reabsorption and potassium excretion. By acting at two completely different nephron segments through two independent mechanisms, the combination produces additive diuretic efficacy while Spironolactone's potassium conservation significantly offsets Furosemide's potassium-wasting effect — reducing hypokalaemia risk that would occur with Furosemide alone.
Dosage and Administration
⚠️ Monitor blood potassium, sodium, and kidney function regularly — electrolyte balance can shift unpredictably despite complementary mechanisms. Take in the morning to avoid nighttime urination. Never combine with other potassium-sparing diuretics without specialist supervision. Maintain adequate hydration — excessive fluid loss causes acute kidney injury.
| Indication | Usual Adult Dose | Frequency | Notes |
|---|---|---|---|
| Oedema — heart failure | 1 – 2 tablets | Once daily in morning | Adjusted to diuretic response |
| Ascites — liver cirrhosis | 1 – 2 tablets | Once daily in morning | Under hepatologist supervision |
| Nephrotic syndrome oedema | 1 tablet | Once daily in morning | Regular kidney function monitoring |
| Hypertension with oedema | 1 tablet | Once daily in morning | Adjusted by cardiologist |
Active Ingredients
| Ingredient | Strength |
|---|---|
| Spironolactone | 50mg |
| Furosemide | 20mg |
Who Should NOT Take Spiromide Tablet?
- Allergy to Spironolactone, Furosemide, sulphonamide-derived medicines, or any component
- Hyperkalaemia — already elevated blood potassium above normal range
- Severe kidney impairment or anuria — dangerous electrolyte accumulation and reduced diuretic effectiveness
- Addison's disease — adrenal insufficiency
- Severe hyponatraemia — critically low blood sodium
- Severe hypovolaemia — significant dehydration or volume depletion
- Hepatic encephalopathy — advanced liver failure with confusion
- Currently taking other potassium-sparing diuretics — dangerous additive hyperkalaemia
- Pregnancy — Spironolactone antiandrogenic effects harmful to foetus; Furosemide risks foetal electrolyte imbalance
- Breastfeeding — both components pass into breast milk
- Children — dose adjustment required under specialist supervision
- Gout — Furosemide raises uric acid levels precipitating acute attacks
Side Effects
Common: Increased urination — particularly during first days of treatment (پیشاب زیادہ آنا), mild dizziness especially on standing (اٹھتے وقت چکر), mild nausea and stomach discomfort — reduced by taking with food, gynaecomastia — breast tissue enlargement in men from Spironolactone component at higher doses (مردوں میں چھاتی کا بڑھنا), menstrual irregularities in women from antiandrogenic effect, mild muscle cramps, mild thirst.
Serious — Stop and seek emergency help immediately: Dangerous hyperkalaemia — severe muscle weakness, paralysis, and life-threatening cardiac arrhythmia from elevated potassium (پوٹاشیم کی خطرناک زیادتی — فوری ہسپتال جائیں), severe hypokalaemia — profound muscle weakness and dangerous arrhythmia if Furosemide effect dominates (پوٹاشیم کی کمی — فوری مدد لیں), severe hyponatraemia — profound confusion, seizures, and coma from critically low sodium (فوری ہسپتال جائیں), acute kidney injury from excessive fluid depletion — significantly reduced urination (فوری ڈاکٹر کو بتائیں), severe allergic reaction with swelling of face or throat (فوری مدد لیں), acute gout attack — sudden severe joint pain and swelling (گنٹھیا کا شدید دورہ — ڈاکٹر کو بتائیں), significant hearing loss or tinnitus — rare Furosemide ototoxicity at high doses.
Drug Interactions
| Medicine | Interaction |
|---|---|
| ACE inhibitors (Enalapril, Lisinopril) | Significantly increased hyperkalaemia risk from Spironolactone — and first-dose severe hypotension from Furosemide; monitor very closely |
| ARBs (Valsartan, Telmisartan) | Increased hyperkalaemia risk — avoid triple RAAS blockade with both diuretic components |
| Potassium supplements | Greatly increased hyperkalaemia risk with Spironolactone — avoid unless specifically directed by specialist |
| Other potassium-sparing diuretics (Amiloride) | Severely additive hyperkalaemia — never combine without strict specialist supervision |
| NSAIDs (Ibuprofen, Diclofenac) | Reduce diuretic effectiveness of both components and increase acute kidney injury risk |
| Digoxin | Furosemide-induced hypokalaemia increases Digoxin toxicity risk — monitor potassium and Digoxin levels closely |
| Lithium | Furosemide reduces Lithium excretion — significantly increased toxicity risk; Spironolactone also alters Lithium levels |
| Aminoglycoside antibiotics (Gentamicin) | Furosemide severely amplifies aminoglycoside ototoxicity and nephrotoxicity — avoid combination |
| Antidiabetic medicines | Furosemide raises blood glucose — monitor blood sugar closely in diabetic patients |
| Corticosteroids (Prednisolone) | Additive potassium loss with Furosemide — worsened hypokalaemia risk |
| Alcohol (شراب) | Increases blood pressure lowering and dizziness — avoid excessive consumption |
Storage: Store below 25°C in a cool, dry place. Protect from moisture and direct sunlight. Keep out of reach of children (بچوں کی پہنچ سے دور رکھیں). Do not use after expiry date.
FAQs
Q: Why does Spiromide combine two diuretics instead of using a higher dose of one? Furosemide and Spironolactone act at completely different sites in the kidney through different mechanisms — their combination produces additive diuretic efficacy that neither achieves alone at equivalent individual doses. Crucially, Furosemide's potassium-wasting and Spironolactone's potassium-conserving effects partially balance each other — reducing the dangerous hypokalaemia risk that occurs with high-dose Furosemide alone while achieving stronger overall fluid removal.
Q: Why must potassium be monitored regularly despite Spiromide containing a potassium-sparing diuretic? While Spironolactone's potassium-conserving effect partially offsets Furosemide's potassium loss — this balance is not always perfect and can shift unpredictably with changes in kidney function, diet, illness, or additional medicines. Potassium can swing dangerously in either direction — too low from Furosemide dominance or too high from Spironolactone dominance. Regular blood tests are essential to ensure safe electrolyte balance throughout treatment.
Q: Can Spiromide be taken at night for convenience? Taking Spiromide at night is strongly discouraged — the significant diuretic effect causes frequent urination that would severely disrupt sleep and increase fall risk for nighttime bathroom visits. Always take in the morning to ensure diuretic activity occurs during waking hours when toilet access is convenient and safe — particularly important for elderly patients.
Medical Disclaimer: This information is for general awareness only and does not replace medical advice. Always consult a qualified doctor or pharmacist before taking any prescription medicine.