Moксотенс (Moxonidine)

Moxonidine is indicated for the management of high blood pressure within the antihypertensive drug class.

• Essential hypertension: lowers both systolic and diastolic pressure in patients with primary hypertension.
• Isolated systolic hypertension: reduces elevated systolic readings in older adults.
• Diastolic hypertension: helps achieve target diastolic values when diastolic pressure is predominant.

• Moxonidine selectively activates central imidazoline I1 receptors, which diminishes sympathetic outflow from the brainstem. This reduction in sympathetic tone leads to decreased peripheral vascular resistance and lower heart rate, resulting in a modest but consistent reduction in arterial blood pressure.

Moxonidine may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects

• Dry mouth: sensation of reduced salivation.
• Fatigue: feeling of tiredness or lack of energy.
• Dizziness: light‑headedness, especially when standing quickly.
• Headache: mild to moderate cranial pain.
• Nausea: upset stomach or urge to vomit.
• Constipation: infrequent or difficult bowel movements.

Serious or Rare Side Effects

• Severe hypotension: markedly low blood pressure requiring medical attention.
• Bradycardia: abnormally slow heart rate.
• Hepatic dysfunction: abnormal liver enzyme elevations.
• Allergic reactions: rash, itching, or swelling.
• Syncope: sudden loss of consciousness.
• Electrolyte imbalance: abnormal potassium or sodium levels.

Before initiating therapy, clinicians should evaluate patient history and monitor relevant parameters.

• Renal impairment: adjust dose or monitor renal function closely.
• Hepatic disease: use with caution and assess liver enzymes.
• Concomitant antihypertensives: watch for additive blood‑pressure lowering effects.
• Elderly patients: start at lower dose and titrate slowly.
• Pregnancy and lactation: avoid unless benefits outweigh risks.
• Store at ambient temperature: keep below 25 °C, retain in original container, protect from moisture and light.

Moxonidine can interact with several drug classes, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Combined use with other central antihypertensives (e.g., clonidine) may cause excessive hypotension.
• Potassium‑sparing diuretics: risk of hyperkalaemia.
• Strong CYP2D6 inhibitors: may increase plasma concentrations.

Moderate Interactions (Monitor Closely):\n- Non‑steroidal anti‑inflammatory drugs (NSAIDs): may blunt antihypertensive effect.

• Beta‑blockers: additive heart‑rate reduction.
• ACE inhibitors or ARBs: monitor renal function and potassium levels.