Atacand 8mg Tablets
Overview
What is this medicine?
How to Use This Medicine
To use this medication correctly, follow your doctor's instructions and read all the information provided. Take your medication with or without food, as directed. It's essential to continue taking this medication as prescribed by your doctor or healthcare provider, even if you're feeling well. Establish a routine by taking your medication at the same time every day.
If you have difficulty swallowing pills, you can discuss the option of creating a liquid suspension with your doctor or pharmacist. If a liquid suspension is prepared, be sure to shake it well before each use. When measuring liquid doses, use the measuring device that comes with the medication. If one is not provided, ask your pharmacist for a suitable device to ensure accurate measurements.
Storing and Disposing of Your Medication
Store your medication at room temperature in a dry location, avoiding the bathroom. Keep the lid tightly closed. If a liquid suspension is made from the tablets, store it at room temperature and avoid freezing. Discard any unused portion of the liquid suspension after 30 days. Keep all medications in a safe place, out of the reach of children and pets.
What to Do If You Miss a Dose
If you miss a dose, take it as soon as you remember. However, if it's close to the time for your next scheduled dose, skip the missed dose and resume your regular dosing schedule. Do not take two doses at the same time or take extra doses. If you're unsure about what to do if you miss a dose, consult your doctor for guidance.
Lifestyle & Tips
- Take your medication exactly as prescribed, usually once daily, with or without food.
- Do not stop taking this medication without talking to your doctor, even if you feel well.
- Monitor your blood pressure regularly at home as advised by your doctor.
- Limit your intake of high-potassium foods (e.g., bananas, oranges, potatoes, leafy greens) and avoid potassium supplements or salt substitutes containing potassium, unless specifically instructed by your doctor.
- Maintain a healthy diet low in sodium and saturated fats.
- Engage in regular physical activity as recommended by your doctor.
- Limit alcohol consumption.
- Inform your doctor or dentist that you are taking candesartan before any surgery or dental procedures.
Available Forms & Alternatives
Available Strengths:
Generic Alternatives:
Dosing & Administration
Adult Dosing
Condition-Specific Dosing:
Pediatric Dosing
Dose Adjustments
Renal Impairment:
Hepatic Impairment:
Pharmacology
Mechanism of Action
Pharmacokinetics
Absorption:
Distribution:
Elimination:
Pharmacodynamics
Safety & Warnings
BLACK BOX WARNING
Side Effects
Although rare, some people may experience severe and potentially life-threatening side effects while taking this medication. If you notice any of the following symptoms, contact your doctor or seek immediate medical attention:
Signs of an allergic reaction, such as:
+ Rash
+ Hives
+ Itching
+ Red, swollen, blistered, or peeling skin with or without fever
+ Wheezing
+ Tightness in the chest or throat
+ Trouble breathing, swallowing, or talking
+ Unusual hoarseness
+ Swelling of the mouth, face, lips, tongue, or throat
Signs of kidney problems, including:
+ Inability to pass urine
+ Changes in urine output
+ Blood in the urine
+ Sudden significant weight gain
Signs of high potassium levels, such as:
+ Abnormal heartbeat
+ Confusion
+ Weakness, lightheadedness, or dizziness
+ Feeling like passing out
+ Numbness or tingling
+ Shortness of breath
Severe dizziness or fainting
Other Possible Side Effects
Like all medications, this drug can cause side effects. While many people may not experience any side effects or only minor ones, it's essential to discuss any concerns with your doctor. If you experience any of the following side effects or any other symptoms that bother you or do not go away, contact your doctor:
Dizziness
Back pain
Flu-like symptoms
Common cold symptoms
Sore throat
Stuffy nose
This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, consult your doctor. You can also report side effects to the FDA at 1-800-332-1088 or online at https://www.fda.gov/medwatch.
Seek Immediate Medical Attention If You Experience:
- Severe dizziness or fainting (signs of low blood pressure)
- Swelling of the face, lips, tongue, or throat (angioedema - seek immediate medical attention)
- Difficulty breathing or swallowing (angioedema - seek immediate medical attention)
- Signs of high potassium (e.g., muscle weakness, slow or irregular heartbeat)
- Signs of kidney problems (e.g., decreased urination, swelling in ankles or feet, unusual tiredness)
Before Using This Medicine
It is essential to inform your doctor about the following conditions to ensure safe treatment:
Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Describe the allergic reaction you experienced, including the symptoms that occurred.
Kidney disease, as this may affect how your body processes the medication.
If you are taking a medication that contains aliskiren, especially if you have diabetes or kidney problems, as this combination may increase the risk of adverse effects.
If you are breast-feeding, as this medication is not recommended for nursing mothers. You should not breast-feed while taking this medication.
Special Considerations for Children:
If your child is under 1 year of age, do not administer this medication, as it is not approved for use in infants younger than 1 year.
Additional Precautions:
This medication may interact with other drugs, including prescription and over-the-counter medications, natural products, and vitamins. Provide your doctor and pharmacist with a comprehensive list of all your medications and health conditions to ensure safe treatment.
* Do not start, stop, or change the dose of any medication without consulting your doctor, as this may affect the safety and efficacy of your treatment.
Precautions & Cautions
When starting this medication, avoid driving and other activities that require alertness until you understand how it affects you. To minimize the risk of dizziness or fainting, stand up slowly after sitting or lying down, and exercise caution when climbing stairs.
Regularly check your blood pressure as directed by your healthcare provider. Additionally, follow your doctor's instructions for having your blood work and other laboratory tests monitored.
It may take 4 to 6 weeks to experience the full effects of this medication. If you are using a salt substitute containing potassium, a potassium-sparing diuretic, or a potassium supplement, consult with your doctor.
If you are on a low-sodium or sodium-free diet, discuss this with your doctor. When taking this medication for high blood pressure, consult with your doctor before using over-the-counter products that may increase blood pressure, such as cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and certain natural products or aids.
Before consuming alcohol, talk to your doctor. In hot weather or during physical activity, be cautious and drink plenty of fluids to prevent dehydration. If you experience excessive sweating, fluid loss, vomiting, or diarrhea, inform your doctor, as these conditions may lead to low blood pressure.
It is also important to note that this medication may be less effective in lowering blood pressure in Black patients. In some cases, an additional medication may be necessary. If you have any questions or concerns, discuss them with your doctor.
Overdose Information
Overdose Symptoms:
- Profound hypotension (very low blood pressure)
- Dizziness
- Tachycardia (rapid heart rate)
- Bradycardia (slow heart rate, less common)
What to Do:
If you suspect an overdose, seek immediate medical attention. Call 911 or your local emergency number. For poison control, call 1-800-222-1222. Treatment is supportive and symptomatic. Lay the patient supine with legs elevated. Intravenous fluids may be administered to correct hypotension.
Drug Interactions
Contraindicated Interactions
- Aliskiren (in patients with diabetes or moderate-to-severe renal impairment [GFR <60 mL/min/1.73 m²])
Major Interactions
- Potassium-sparing diuretics (e.g., spironolactone, triamterene, amiloride) - increased risk of hyperkalemia
- Potassium supplements - increased risk of hyperkalemia
- NSAIDs (Nonsteroidal Anti-inflammatory Drugs, including COX-2 inhibitors) - may reduce antihypertensive effect and increase risk of renal impairment (especially in elderly, volume-depleted, or renally impaired patients)
- Lithium - increased serum lithium concentrations and lithium toxicity
Moderate Interactions
- ACE inhibitors (e.g., enalapril, lisinopril) - increased risk of hypotension, hyperkalemia, and renal impairment (dual blockade generally not recommended)
- Other antihypertensives - additive hypotensive effect
- Trimethoprim/sulfamethoxazole (Bactrim) - increased risk of hyperkalemia
Minor Interactions
- Not available
Monitoring
Baseline Monitoring
Rationale: To establish baseline and guide initial dosing.
Timing: Prior to initiation
Rationale: To assess baseline renal function, as ARBs can affect renal hemodynamics and are renally eliminated.
Timing: Prior to initiation
Rationale: To assess baseline potassium levels, as ARBs can cause hyperkalemia.
Timing: Prior to initiation
Routine Monitoring
Frequency: Regularly, especially after dose adjustments, then periodically (e.g., monthly, quarterly) once stable.
Target: <130/80 mmHg (general target, individualized based on patient comorbidities)
Action Threshold: Persistent BP above target, or symptomatic hypotension.
Frequency: Within 1-2 weeks after initiation or dose increase, then periodically (e.g., every 3-6 months) or as clinically indicated.
Target: Stable or minor fluctuations from baseline.
Action Threshold: Significant increase in SCr (>30% from baseline or >0.5 mg/dL), especially if accompanied by symptoms of renal dysfunction.
Frequency: Within 1-2 weeks after initiation or dose increase, then periodically (e.g., every 3-6 months) or as clinically indicated, especially if on concomitant medications that increase K+.
Target: 3.5-5.0 mEq/L
Action Threshold: K+ >5.5 mEq/L (consider dose reduction or discontinuation), or symptomatic hyperkalemia.
Symptom Monitoring
- Dizziness or lightheadedness (especially upon standing, indicative of hypotension)
- Fatigue or weakness
- Swelling of face, lips, tongue, or throat (angioedema - rare but serious)
- Difficulty breathing or swallowing (angioedema)
- Muscle cramps or weakness, irregular heartbeat (symptoms of hyperkalemia)
- Signs of worsening renal function (e.g., decreased urine output, edema)
Special Patient Groups
Pregnancy
Candesartan is contraindicated in pregnancy, especially during the second and third trimesters, due to the risk of fetal injury and death. Exposure during the first trimester may also carry risks. If pregnancy is detected, discontinue candesartan as soon as possible.
Trimester-Specific Risks:
Lactation
It is not known whether candesartan is excreted in human milk. Due to the potential for adverse effects on the nursing infant, a decision should be made whether to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother. Caution is advised.
Pediatric Use
Approved for hypertension in children 1 to <17 years. Dosing is weight-based for younger children. Safety and efficacy have not been established in children less than 1 year of age. Close monitoring of blood pressure, renal function, and potassium is essential.
Geriatric Use
No overall differences in efficacy or safety have been observed between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. No specific dose adjustment is required based on age alone, but consider starting at the lower end of the dosing range and monitor renal function more closely, as elderly patients are more likely to have decreased renal function.
Clinical Information
Clinical Pearls
- Candesartan cilexetil is a prodrug; it is converted to the active drug candesartan in the GI tract.
- It is generally well-tolerated and a good alternative for patients who develop a cough with ACE inhibitors.
- Once-daily dosing promotes patient adherence.
- Monitor for hyperkalemia, especially in patients with renal impairment or those taking potassium-sparing diuretics or potassium supplements.
- Angioedema is a rare but serious side effect; educate patients on symptoms and to seek immediate medical attention if it occurs.
- Not recommended for use in combination with ACE inhibitors for most patients due to increased risk of adverse events without significant additional benefit.
Alternative Therapies
- Other Angiotensin II Receptor Blockers (ARBs): Losartan, Valsartan, Irbesartan, Telmisartan, Olmesartan, Azilsartan
- ACE Inhibitors (e.g., Lisinopril, Enalapril, Ramipril)
- Calcium Channel Blockers (e.g., Amlodipine, Nifedipine, Diltiazem)
- Thiazide Diuretics (e.g., Hydrochlorothiazide, Chlorthalidone)
- Beta-blockers (e.g., Metoprolol, Carvedilol)
- Direct Renin Inhibitors (e.g., Aliskiren - limited use)