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- Brand: Incepta Pharmaceuticals
- Product ID: Hydrochlorothiazide
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Acuren 50mg Tablet — Hydrochlorothiazide (HCTZ) | Beximco Pharmaceuticals
| Generic Name | Hydrochlorothiazide (HCTZ) 50mg |
| Drug Class | Thiazide Diuretic / Antihypertensive |
| Manufacturer | Beximco Pharmaceuticals Ltd. |
| Route | Oral (Tablet) |
| Prescription Status | Prescription Required |
Overview
Acuren 50mg is the higher-strength formulation of Hydrochlorothiazide (HCTZ), a thiazide diuretic used for hypertension and oedema management. The 50mg dose is used where 25mg provides insufficient response, particularly in oedema states. However, higher HCTZ doses carry greater risk of metabolic side effects — electrolyte disturbances, glucose elevation, and dyslipidaemia are more pronounced at 50mg. Diabetic patients require heightened vigilance with this dose.
Mechanism of Action
HCTZ inhibits the Na⁺/Cl⁻ cotransporter in the distal convoluted tubule, reducing sodium and water reabsorption. This increases urinary output and reduces plasma volume, lowering blood pressure. Potassium, magnesium, and other electrolytes are also lost in urine. At the 50mg dose, diuretic effect is stronger but metabolic side effects are proportionally more significant.
Indications
- Hypertension — where 25mg dose insufficient
- Oedema due to heart failure, hepatic cirrhosis, renal disease, or corticosteroid use
- Combination antihypertensive regimens requiring stronger diuresis
- Nephrogenic diabetes insipidus
Dosage
| Indication | Dose | Frequency | Notes |
|---|---|---|---|
| Hypertension | 25–50mg | Once daily (morning) | Maximum 50mg/day for hypertension |
| Oedema | 25–100mg | Once or twice daily | Use lowest effective dose; maximum 200mg/day |
Take in the morning with or without food. Avoid late evening dosing to prevent nocturia.
Critical Diabetic Patient Warnings
- Greater hyperglycaemia risk at 50mg: The metabolic effects of HCTZ are dose-dependent — the 50mg dose causes more significant blood glucose elevation than 25mg. Fasting glucose and HbA1c must be monitored closely and antidiabetic doses adjusted as needed
- Hypokalaemia — amplified at higher dose: Greater potassium loss at 50mg worsens insulin secretion impairment (hypokalaemia reduces beta-cell insulin release). Monitor serum K⁺; consider potassium supplementation or potassium-sparing combination
- Dyslipidaemia: 50mg HCTZ produces more LDL and triglyceride elevation than lower doses — worsens the already elevated cardiovascular risk in diabetics
- Renal function — critical: Avoid in diabetic nephropathy with eGFR <30 ml/min. At 50mg, the risk of worsening renal function is greater. Check creatinine and eGFR at baseline and regularly
- Dehydration: Stronger diuretic effect increases dehydration risk — particularly dangerous in diabetics with osmotic diuresis from hyperglycaemia. Maintain adequate hydration
- Orthostatic hypotension: Greater at 50mg — combined with autonomic neuropathy in diabetics, fall risk is significant
Side Effects
| System | Side Effect | Severity |
|---|---|---|
| Metabolic | Hypokalaemia, hyponatraemia, hypomagnesaemia, hypercalcaemia | Common — Moderate |
| Metabolic | Hyperglycaemia, elevated triglycerides & LDL | Moderate — more pronounced at 50mg |
| Metabolic | Hyperuricaemia, gout | Moderate |
| Renal | Elevated creatinine, reduced eGFR | Moderate |
| Cardiovascular | Orthostatic hypotension, volume depletion | Mild–Moderate |
| GI | Nausea, gastric irritation, anorexia | Mild |
| Skin | Photosensitivity rash | Mild |
| Rare | Severe hyponatraemia, pancreatitis, aplastic anaemia | Rare — Serious |
Drug Interactions
| Drug | Interaction |
|---|---|
| ACE inhibitors / ARBs | Additive antihypertensive effect — monitor BP and renal function closely |
| NSAIDs | Reduce diuretic/antihypertensive effect; increase acute kidney injury risk |
| Digoxin | Hypokalaemia increases digoxin toxicity — monitor K⁺ and digoxin levels |
| Lithium | HCTZ reduces lithium excretion — lithium toxicity risk |
| Insulin / Oral antidiabetics | HCTZ raises blood glucose — antidiabetic dose adjustment may be needed |
| Corticosteroids | Additive potassium depletion and glucose elevation |
| Amiodarone | Hypokalaemia increases risk of torsades de pointes |
Contraindications
- Anuria or eGFR <30 ml/min
- Severe hepatic failure
- Hypersensitivity to HCTZ or sulphonamides
- Refractory hypokalaemia or hyponatraemia
- Active gout or severe hyperuricaemia
Storage
Store below 30°C. Protect from light and moisture. Keep out of reach of children.
Frequently Asked Questions
Q: Why would my doctor prescribe 50mg instead of 25mg HCTZ?
A: If 25mg HCTZ does not adequately control blood pressure or oedema, the dose may be increased to 50mg. However, the 50mg dose has greater metabolic risks — particularly in diabetics — and requires closer monitoring.
Q: Can HCTZ cause my diabetes to get worse?
A: Yes. Thiazide diuretics can raise blood glucose and worsen insulin resistance, particularly at higher doses like 50mg. Your physician will monitor your blood sugar and may adjust your antidiabetic medications during HCTZ therapy.
Q: Do I need potassium supplements with HCTZ?
A: Your physician will check your potassium levels. If they drop below normal, potassium supplementation or a potassium-sparing diuretic (e.g. spironolactone, amiloride) may be added. Eating potassium-rich foods also helps.
Medical Disclaimer: Acuren 50mg (Hydrochlorothiazide) is a prescription-only medicine. Diabetic patients must monitor blood glucose, electrolytes, lipids, and renal function regularly. The 50mg dose carries greater metabolic risk than lower doses. This information is for educational purposes only and does not constitute medical advice. Always follow your physician's instructions.
