Candes (candesartan cilexetil): Uses, Dosage & Side Effects

What it's for (Indications)

Candesartan cilexetil, an angiotensin II receptor blocker (ARB), is clinically indicated for the management of several cardiovascular conditions based on its selective antagonism of the angiotensin II type 1 (AT1) receptor.
Its primary application is in the treatment of **hypertension (high blood pressure)**, where it can be used effectively as monotherapy or in combination with other antihypertensive agents to achieve and maintain optimal blood pressure control.
By blocking the AT1 receptor, candesartan helps to reduce peripheral vascular resistance, inhibit aldosterone secretion, and reduce vascular remodeling, thereby significantly lowering both systolic and diastolic blood pressure and reducing the risk of cardiovascular events associated with uncontrolled hypertension.
Furthermore, candesartan cilexetil is indicated for the treatment of **heart failure** in adult patients with impaired left ventricular systolic function (e.
g.
, left ventricular ejection fraction ≤ 40%), specifically to reduce cardiovascular mortality and morbidity.
It is often used as an add-on therapy to angiotensin-converting enzyme (ACE) inhibitors, or as an alternative for patients who are intolerant to ACE inhibitors, such such as those experiencing ACE inhibitor-induced cough or angioedema.
This therapeutic benefit extends to improving symptoms, exercise tolerance, and quality of life in patients across various New York Heart Association (NYHA) functional classes (II-IV) of heart failure.

Dosage Information

Type	Guideline
Standard	Administration: Take this medicine by mouth, with or without food, once daily. Swallow the tablet whole; do not crush or chew. Take at the same time each day to aid adherence. Dosage must be individualized by a healthcare professional. Adult Hypertension: The usual recommended starting dose is 16 mg once daily when used as monotherapy. The target daily dose ranges from 8 mg to 32 mg. Adult Heart Failure: The recommended starting dose is 4 mg once daily. The target dose is 32 mg once daily, which should be achieved by doubling the dose at approximately 2-week intervals, as tolerated by the patient. Pediatric Hypertension (1 to < 6 years): The recommended starting dose is 0.20 mg/kg oral suspension once daily, with a target range of 0.05 – 0.4 mg/kg oral suspension once daily or consider a divided dose. Pediatric Hypertension (6 to < 17 years): For patients weighing < 50 kg, the starting dose is 4 – 8 mg tablet once daily, with a target range of 4 – 16 mg tablet once daily or consider a divided dose. For patients weighing > 50 kg, the starting dose is 8 – 16 mg tablet once daily, with a target range of 4 – 32 mg tablet once daily or consider a divided dose.

Type

Guideline

Standard

Administration: Take this medicine by mouth, with or without food, once daily. Swallow the tablet whole; do not crush or chew. Take at the same time each day to aid adherence. Dosage must be individualized by a healthcare professional. Adult Hypertension: The usual recommended starting dose is 16 mg once daily when used as monotherapy. The target daily dose ranges from 8 mg to 32 mg. Adult Heart Failure: The recommended starting dose is 4 mg once daily. The target dose is 32 mg once daily, which should be achieved by doubling the dose at approximately 2-week intervals, as tolerated by the patient. Pediatric Hypertension (1 to < 6 years): The recommended starting dose is 0.20 mg/kg oral suspension once daily, with a target range of 0.05 – 0.4 mg/kg oral suspension once daily or consider a divided dose. Pediatric Hypertension (6 to < 17 years): For patients weighing < 50 kg, the starting dose is 4 – 8 mg tablet once daily, with a target range of 4 – 16 mg tablet once daily or consider a divided dose. For patients weighing > 50 kg, the starting dose is 8 – 16 mg tablet once daily, with a target range of 4 – 32 mg tablet once daily or consider a divided dose.

Safety & Warnings

Common Side Effects

Patients may experience headache, dizziness, lightheadedness, back pain, sore throat, tiredness, runny nose, flushing, swollen ankles, and pounding heartbeat.
More severe effects reported, sometimes leading to discontinuation, include hypotension, abnormal renal function, and hyperkalemia.

Serious Warnings

Black Box Warning: WARNING: FETAL TOXICITY. When pregnancy is detected, discontinue candesartan cilexetil tablets as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus.
Pregnancy: Candesartan should not be used during pregnancy due to the risk of fetal injury and death.
If pregnancy is detected, discontinue candesartan cilexetil tablets as soon as possible.
Lactation: Not recommended for nursing females; consult your doctor.
Driving: May affect driving ability due to dizziness and reduced alertness; avoid driving until you know how the medicine affects you.
Liver: Use with caution in patients with liver disease; dose adjustment may be required.
Alcohol: Avoid alcohol consumption as it may worsen dizziness and drowsiness.
Renal Function: Use with caution in patients with abnormal renal function.
Hyperkalemia: Patients, especially those with heart failure, may experience hyperkalemia.
Electrolyte Imbalance: Use with caution in patients with electrolyte imbalances or dehydration.
Diabetes: Use with caution in patients with diabetes.
General: Inform your doctor about your complete medical history (especially heart disease, low blood pressure, hyperkalemia, electrolytes imbalance, dehydration, and diabetes) and all current medicines.
Do not discontinue without consulting your doctor.
Do not share this medicine.
Store at room temperature, away from direct heat and sunlight, and out of reach of children and pets.
Take by mouth, with or without food, once daily.
Swallow whole, do not crush or chew.
Take at the same time each day.

How it Works (Mechanism of Action)

Angiotensin II is formed from angiotensin I in a reaction catalyzed by angiotensin-converting enzyme (ACE, kininase II). Angiotensin II is the principal pressor agent of the renin-angiotensin system, with effects that include vasoconstriction, stimulation of synthesis and release of aldosterone, cardiac stimulation, and renal reabsorption of sodium. Candesartan blocks the vasoconstrictor and aldosterone-secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT1 receptor in many tissues, such as vascular smooth muscle and the adrenal gland. Its action is, therefore, independent of the pathways for angiotensin II synthesis. There is also an AT2 receptor found in many tissues, but AT2 is not known to be associated with cardiovascular homeostasis. Candesartan has much greater affinity (> 10,000-fold) for the AT1 receptor than for the AT2 receptor. Blockade of the renin-angiotensin system with ACE inhibitors, which inhi