Olmesartán/Amlodipino Sandoz (Olmesartan Medoxomil, Amlodipine)

Olmesartan/Amlodipine acts on the renin‑angiotensin system and vascular smooth muscle to control high blood pressure.

• Essential hypertension: lowers systolic and diastolic pressure in patients with primary hypertension.
• Isolated systolic hypertension: reduces elevated systolic pressure, especially in older adults.
• Hypertension uncontrolled on monotherapy: adds further blood‑pressure reduction when a single agent is insufficient.

• Olmesartan medoxomil selectively blocks AT1 receptors, preventing angiotensin II‑mediated vasoconstriction and aldosterone release. Amlodipine inhibits L‑type calcium channels in vascular smooth muscle, causing arterial dilation. The combined effect reduces peripheral vascular resistance and lowers systemic blood pressure.

Common Side Effects

• Dizziness: sensation of light‑headedness, especially after standing.
• Headache: mild to moderate pain often related to blood‑pressure changes.
• Peripheral edema: swelling of ankles or feet due to fluid accumulation.
• Flushing: transient redness of the face or neck.
• Fatigue: feeling unusually tired or weak.
• Palpitations: awareness of heartbeat irregularities.

Serious or Rare Side Effects

• Angioedema: rapid swelling of lips, tongue or throat requiring emergency care.
• Severe hypotension: dangerously low blood pressure with fainting risk.
• Hepatic dysfunction: abnormal liver enzymes or jaundice.
• Myocardial infarction: chest pain indicating possible heart attack.
• Allergic reactions: rash, itching or anaphylaxis.
• Heart block: abnormal heart rhythm that may need monitoring.

Patients should be evaluated for safety before initiating therapy.

• Blood pressure monitoring: check regularly to avoid excessive lowering.
• Renal function assessment: evaluate creatinine and eGFR, especially in patients with kidney disease.
• Electrolyte balance: monitor potassium and sodium levels when used with diuretics.
• Hepatic impairment: use cautiously in patients with liver disease.
• Hypersensitivity: discontinue if signs of allergic reaction appear.
• Store at ambient temperature: keep in the original pack, protect from moisture and direct sunlight.

Olmesartan/Amlodipine may interact with several drug classes.

Major Interactions (Avoid)

• Aliskiren in diabetic patients: combined use can increase renal risk.
• Potassium‑sparing diuretics: may cause hyper‑kalemia.
• NSAIDs: can blunt antihypertensive effect.
• Strong CYP3A4 inhibitors (e.g., clarithromycin): raise amlodipine concentrations.
• Dual ARB therapy: adds no benefit and raises adverse‑event risk.

Moderate Interactions (Monitor Closely):\n- ACE inhibitors: may increase risk of renal impairment and hyper‑kalemia.

• Loop diuretics: can enhance hypotensive effect.
• Azole antifungals (e.g., ketoconazole): may increase amlodipine levels.
• Beta‑blockers: additive blood‑pressure lowering.
• Lithium: possible increase in serum lithium concentrations.