Lacipil (Lacidipine)

Lacidipine is a calcium channel blocker that lowers blood pressure by acting on the vascular smooth muscle.

• Hypertension: reduces systemic arterial pressure and helps control high blood pressure.
• Essential hypertension: provides long‑term blood pressure control in primary hypertension.
• High blood pressure: assists in preventing cardiovascular complications associated with elevated blood pressure.

• Lacidipine selectively inhibits L‑type calcium channels in vascular smooth muscle cells, decreasing calcium influx. This leads to relaxation of arterial walls, vasodilation, and a consequent reduction in peripheral vascular resistance, which lowers systemic blood pressure.

Lacidipine may cause a range of adverse reactions, from mild to severe.

Common Side Effects

• Headache: mild to moderate pain often occurring after dose initiation.
• Flushing: transient warmth and redness of the skin.
• Peripheral edema: swelling of the ankles or lower legs.
• Dizziness: sensation of light‑headedness, especially when standing.
• Nausea: mild gastrointestinal discomfort.
• Tachycardia: increased heart rate.

Serious or Rare Side Effects

• Severe hypotension: marked drop in blood pressure leading to fainting.
• Allergic reactions: rash, itching, or swelling that may indicate hypersensitivity.
• Liver enzyme elevation: abnormal liver function tests.
• Myocardial infarction: rare occurrence of heart attack.
• Arrhythmias: irregular heart rhythms.
• Stevens‑Johnson syndrome: severe skin reaction.

Before initiating Lacipil, several safety considerations should be observed.

• Monitor blood pressure: ensure adequate control and avoid excessive drops.
• Assess cardiovascular status: caution in patients with severe aortic stenosis or heart failure.
• Review concomitant medications: avoid additive hypotensive agents without supervision.
• Renal/hepatic function: adjust therapy if significant impairment is present.
• Pregnancy and lactation: use only if the potential benefit justifies the risk.
• Store below 25°C: keep in the original pack, protect from moisture.

Lacidipine can interact with several drug classes, requiring careful management. Major Interactions (Avoid):\n- Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole): may increase lacidipine plasma levels.

• Other potent antihypertensives (e.g., ACE inhibitors, ARBs) used together can cause severe hypotension.
• Grapefruit juice: enhances drug exposure and risk of adverse effects.

Moderate Interactions (Monitor Closely)

• CYP3A4 inducers (e.g., rifampin, carbamazepine): may reduce efficacy.
• Diuretics: may increase the risk of electrolyte imbalance and hypotension.
• Non‑steroidal anti‑inflammatory drugs (NSAIDs): can attenuate antihypertensive effect.
• Beta‑blockers: may require dose adjustments to avoid excessive blood pressure lowering.
• Digoxin: monitor for signs of toxicity due to altered renal clearance.