Moduretic 100s (Amiloride/Hydrochlorothiazide) in Kenya

Overview

Moduretic is a combination diuretic containing amiloride HCl (5mg) and hydrochlorothiazide (50mg). It treats hypertension and edema (fluid retention) by promoting urine output while conserving potassium. Each pack contains 100 tablets, used long-term under medical supervision.

Composition

• Active Ingredients per Tablet:
  • Amiloride Hydrochloride: 5mg (potassium-sparing diuretic).
  • Hydrochlorothiazide (HCTZ): 50mg (thiazide diuretic).
• Inactive Ingredients: Lactose, maize starch, magnesium stearate.

Side Effects

Common

• Dizziness, headache, muscle cramps.
• Nausea, dry mouth, increased thirst.
• Mild electrolyte imbalances (e.g., low sodium).

Serious Risks

• Hyperkalemia (high potassium): Muscle weakness, irregular heartbeat (risk in renal impairment/diabetes).
• Hypotension: Fainting, especially in dehydrated patients.
• Renal Impairment: Worsening kidney function (monitor creatinine).
• Gout: Elevated uric acid (HCTZ effect).
• Allergic Reactions: Rash, photosensitivity.

How to Use

• Dosage:
  • Hypertension: 1–2 tablets daily (max 4 tablets/day).
  • Edema: 1 tablet daily (adjust based on response).
• Administration:
  • Take once daily in the morning to avoid nocturia.
  • With or without food.
• Monitoring:
  • Electrolytes: Check potassium, sodium, creatinine at baseline, then every 3–6 months.
  • Blood Pressure: Monitor regularly.
  • Renal Function: eGFR every 6–12 months.
• Precautions:
  • Avoid in severe renal impairment (eGFR <30 mL/min).
  • Do not combine with potassium supplements or ACE inhibitors (hyperkalemia risk).
  • Limit alcohol (enhances hypotension).

Frequently Asked Questions

1. Is Moduretic available over-the-counter?
   No – prescription-only due to electrolyte risks.

2. Does NHIF cover it?
   Partially – covered for hypertension under chronic illness scheme (co-payment required).

3. Can it be used for heart failure?
   Off-label – sometimes used but requires specialist oversight.

4. What if potassium levels rise?
   Stop immediately and consult a doctor; may need potassium-lowering therapy.

5. Are there cheaper alternatives?
   Yes – plain HCTZ (25mg) costs KES 5–15/tablet but requires potassium monitoring.

6. Can I take it during pregnancy?
   Avoid – HCTZ may cause fetal complications; use methyldopa instead.

7. How long does one pack last?
   50–100 days (1–2 tablets/day).

Conclusion

Moduretic 100s is an effective antihypertensive and diuretic in Kenya, balancing fluid loss with potassium conservation. Its fixed-dose combination simplifies therapy but demands rigorous electrolyte/renal monitoring due to hyperkalemia risks. While accessible (KES 1,500–3,000/pack) and partially covered by NHIF, it requires strict adherence to dosing and follow-up. Patients with diabetes, renal impairment, or on potassium-increasing drugs need extra vigilance. For uncomplicated hypertension, plain HCTZ may be safer and cheaper, but Moduretic remains vital for potassium-sensitive cases. Always prioritize regular lab tests to prevent life-threatening electrolyte imbalances.