Normorix Mite (Amiloride Hydrochloride, Hydrochlorothiazide)

• Normorix Mite, a combination potassium‑sparing and thiazide diuretic, is indicated for conditions involving fluid overload and elevated blood pressure.
• Hypertension: helps lower blood pressure by promoting sodium and water excretion while preserving potassium.
• Edema associated with heart failure: reduces fluid accumulation in tissues through increased urinary output.
• Edema associated with liver cirrhosis: assists in managing ascites and peripheral swelling via diuresis.
• Edema associated with renal disease: aids in controlling fluid retention in chronic kidney disease.

• Amiloride blocks epithelial sodium channels in the distal nephron, decreasing sodium reabsorption and limiting potassium loss, while hydrochlorothiazide inhibits the Na⁺/Cl⁻ cotransporter in the distal convoluted tubule, reducing NaCl reabsorption. The combined effect enhances urinary excretion of sodium and water, producing a diuretic response that lowers blood volume and blood pressure.

Common Side Effects

• Dizziness or light‑headedness, especially after the first doses.
• Headache, often mild and transient.
• Nausea or mild gastrointestinal discomfort.
• Muscle cramps or weakness due to electrolyte shifts.
• Increased frequency of urination.
• Mild electrolyte imbalance (e.g., mild hyponatremia or hypokalemia).

Serious or Rare Side Effects

• Severe hyperkalemia, which can cause cardiac arrhythmias.
• Marked hyponatremia or severe electrolyte disturbances.
• Acute renal dysfunction or worsening kidney function.
• Allergic reactions such as rash, angioedema, or anaphylaxis.
• Pancreatitis or severe abdominal pain.
• Blood dyscrasias including leukopenia or thrombocytopenia.

• Before initiating therapy, assess baseline electrolytes and renal function, and monitor regularly during treatment.
• Monitor electrolytes: regular blood tests for potassium and sodium levels.
• Assess renal function: check creatinine and glomerular filtration rate before and during therapy.
• Adjust dose in elderly: start low and monitor for orthostatic hypotension.
• Avoid in patients with hyperkalemia: contraindicated due to risk of dangerous potassium rise.
• Store at ambient temperature: keep below 25°C, retain original packaging, protect from moisture.

Normorix Mite can interact with several drug classes; careful review is required.

Major Interactions (Avoid)

• ACE inhibitors or ARBs: increased risk of hyperkalemia.
• NSAIDs: may blunt diuretic effect and impair renal function.
• Lithium: diuretic can raise lithium levels, leading to toxicity.

Moderate Interactions (Monitor Closely)

• Antidiabetic agents: diuresis may affect glucose control.
• Other antihypertensives: additive blood pressure lowering.
• Corticosteroids: may enhance potassium loss and electrolyte disturbances.