Nebivolol/Hydrochlorothiazide Cristers (Hydrochlorothiazide, Nebivolol)

Nebivolol/Hydrochlorothiazide is indicated for conditions related to elevated blood pressure.

• Essential hypertension: lowers systolic and diastolic blood pressure in adult patients.
• Hypertension: provides combined β1‑blockade and diuretic effect to achieve target blood pressure.
• High blood pressure requiring combined therapy: simplifies treatment by addressing cardiac output and fluid volume simultaneously.

• Nebivolol selectively blocks β1‑adrenergic receptors, reducing heart rate and myocardial contractility, while also enhancing nitric oxide release to promote vasodilation. Hydrochlorothiazide inhibits Na⁺/Cl⁻ reabsorption in the distal convoluted tubule, increasing urinary sodium and water excretion, which decreases plasma volume and peripheral resistance, together resulting in lowered arterial pressure.

Nebivolol/Hydrochlorothiazide may cause a range of adverse reactions, which are categorized by frequency.

Common Side Effects

• Dizziness: transient light‑headedness, especially after standing.
• Headache: mild to moderate intensity.
• Fatigue: general tiredness or reduced energy.
• Increased urination: due to the diuretic component.
• Electrolyte imbalance: mild changes in potassium or sodium levels.
• Cough: occasional dry throat irritation.

Serious or Rare Side Effects

• Severe hypotension: marked drop in blood pressure leading to fainting.
• Acute renal impairment: sudden decrease in kidney function.
• Hyperuricemia or gout attacks: elevated uric acid levels.
• Allergic reactions: rash, itching, or swelling.
• Pancreatitis: abdominal pain with nausea.
• Stevens‑Johnson syndrome: severe skin blistering.

Before initiating therapy, clinicians should consider several safety measures.

• Monitor blood pressure: ensure adequate control without excessive drop.
• Assess renal function: check creatinine and eGFR periodically.
• Check electrolytes: especially potassium and sodium levels.
• Use caution in asthma: β‑blockade may exacerbate bronchospasm.
• Avoid abrupt discontinuation: taper to prevent rebound hypertension.
• Store at room temperature: keep in the original pack, protect from moisture.

Nebivolol/Hydrochlorothiazide can interact with other medicines, requiring attention to the interaction strength.

Major Interactions (Avoid)

• Other antihypertensives: risk of additive hypotension.
• NSAIDs: may reduce diuretic efficacy and impair renal function.
• Lithium: increased lithium levels leading to toxicity.
• CYP2D6 inhibitors: elevate nebivolol plasma concentrations.
• Potassium‑sparing diuretics: risk of hyperkalemia.

Moderate Interactions (Monitor Closely)

• ACE inhibitors or ARBs: enhanced renal effects, monitor kidney function.
• Other beta‑blockers: additive cardiac depression.
• Antidiabetic agents: possible hypoglycemia, monitor glucose.
• Antidepressants (SSRIs): may affect blood pressure control.
• Anticoagulants: monitor for bleeding risk due to potential platelet effects.