Amlodipine-Valsartan 10-160mg Tabs

Manufacturer MYLAN Active Ingredient Amlodipine and Valsartan(am LOE di peen & val SAR tan) Pronunciation am LOE di peen & val SAR tan
WARNING: Do not take if you are pregnant. Use during pregnancy may cause birth defects or loss of the unborn baby. If you get pregnant or plan on getting pregnant while taking this drug, call your doctor right away. @ COMMON USES: It is used to treat high blood pressure.
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Drug Class
Antihypertensive
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Pharmacologic Class
Calcium Channel Blocker (Dihydropyridine) and Angiotensin II Receptor Blocker (ARB)
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Pregnancy Category
Category D
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FDA Approved
Jun 2007
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

This medicine is a combination of two drugs that work together to lower your blood pressure. Amlodipine relaxes your blood vessels, and valsartan blocks a natural substance in your body that can tighten blood vessels. Lowering blood pressure helps prevent strokes, heart attacks, and kidney problems.
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How to Use This Medicine

Taking Your Medication

To get the most benefit from your medication, follow these guidelines:

Take your medication exactly as directed by your doctor.
Read all the information provided with your medication and follow the instructions carefully.
You can take your medication with or without food.
Take your medication at the same time every day to establish a routine.
Continue taking your medication as prescribed by your doctor or healthcare provider, even if you start to feel better.

It's also important to:

Drink plenty of non-caffeinated liquids, unless your doctor advises you to limit your fluid intake.

Storing and Disposing of Your Medication

To ensure your medication remains effective and safe:

Store your medication at room temperature in a dry place, away from the bathroom.
Keep all medications in a secure location, out of reach of children and pets.
Dispose of unused or expired medications properly. Do not flush them down the toilet or pour them down the drain unless instructed to do so by your doctor or pharmacist.
If you're unsure about the best way to dispose of your medication, consult your pharmacist. You may also have access to drug take-back programs in your area.

What to Do If You Miss a Dose

If you miss a dose of your medication:

Take the missed dose as soon as you remember.
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 to make up for a missed dose.
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Lifestyle & Tips

  • Take this medicine exactly as prescribed, usually once a day, with or without food.
  • Do not stop taking this medicine without talking to your doctor, even if you feel well.
  • Continue to follow a low-sodium diet as recommended by your doctor or dietitian.
  • Engage in regular physical activity as advised by your healthcare provider.
  • Limit alcohol intake.
  • Avoid smoking.
  • Monitor your blood pressure regularly at home as instructed by your doctor.

Dosing & Administration

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Adult Dosing

Standard Dose: 1 tablet (10mg amlodipine/160mg valsartan) orally once daily
Dose Range: 5 - 320 mg

Condition-Specific Dosing:

initial_therapy: Not recommended as initial therapy for hypertension. Should be used when blood pressure is not adequately controlled with amlodipine or valsartan monotherapy, or for patients already on both components.
max_dose: Maximum recommended dose is 10mg amlodipine/320mg valsartan once daily.
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Pediatric Dosing

Neonatal: Not established
Infant: Not established
Child: Not established
Adolescent: Not established
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Dose Adjustments

Renal Impairment:

Mild: No initial dose adjustment required.
Moderate: No initial dose adjustment required.
Severe: Use with caution. Monitor serum potassium and renal function. Valsartan is dialyzable, amlodipine is not.
Dialysis: Valsartan is partially removed by hemodialysis; amlodipine is not. Use with caution and monitor closely.

Hepatic Impairment:

Mild: No initial dose adjustment required for valsartan. For amlodipine, consider lower starting dose (e.g., 2.5 mg amlodipine component) if initiating monotherapy, but for combination, monitor closely.
Moderate: Use with caution. Consider lower starting dose of amlodipine component. Monitor closely.
Severe: Use with caution. Amlodipine dose adjustment is necessary. Not recommended for severe hepatic impairment due to amlodipine component.
Note: Amlodipine clearance is reduced in patients with impaired hepatic function.

Pharmacology

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Mechanism of Action

Amlodipine is a dihydropyridine calcium channel blocker (CCB) that inhibits the transmembrane influx of calcium ions into vascular smooth muscle and myocardial cells. This leads to peripheral arterial vasodilation and reduction in peripheral vascular resistance, thereby lowering blood pressure. Valsartan is an angiotensin II receptor blocker (ARB) that selectively blocks the binding of angiotensin II to the AT1 receptor in various tissues. This blockade inhibits the vasoconstrictor and aldosterone-secreting effects of angiotensin II, leading to vasodilation, reduced aldosterone secretion, and decreased sodium and water reabsorption, ultimately lowering blood pressure.
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Pharmacokinetics

Absorption:

Bioavailability: Amlodipine: 64-90%; Valsartan: ~23%
Tmax: Amlodipine: 6-12 hours; Valsartan: 2-4 hours
FoodEffect: Amlodipine: Food does not affect absorption; Valsartan: Food decreases absorption (AUC by 48%, Cmax by 59%)

Distribution:

Vd: Amlodipine: ~21 L/kg; Valsartan: ~17 L
ProteinBinding: Amlodipine: ~97.5%; Valsartan: ~95%
CnssPenetration: Amlodipine: Limited; Valsartan: Limited

Elimination:

HalfLife: Amlodipine: 30-50 hours; Valsartan: ~6 hours
Clearance: Not available (variable)
ExcretionRoute: Amlodipine: 60% renal (metabolites), 20-25% fecal; Valsartan: 83% fecal (mostly unchanged), 13% renal (mostly unchanged)
Unchanged: Amlodipine: <10% in urine; Valsartan: ~83% in feces, ~13% in urine
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Pharmacodynamics

OnsetOfAction: Within hours (for blood pressure lowering)
PeakEffect: Amlodipine: 6-12 hours; Valsartan: 2-4 hours. Full blood pressure control may take 2-8 weeks.
DurationOfAction: 24 hours

Safety & Warnings

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BLACK BOX WARNING

When pregnancy is detected, discontinue Amlodipine and Valsartan as soon as possible. Drugs that act directly on the renin-angiotensin system can cause injury and death to the developing fetus.
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Side Effects

Urgent Side Effects: Seek Medical Help Right Away

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 immediately or seek emergency 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 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
Signs of liver problems, including:
+ Dark urine
+ Fatigue
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Vomiting
+ Yellow skin or eyes
Severe dizziness or fainting
New or worsening chest pain
Swelling in the arms or legs
Stiff muscles, shakiness, or abnormal muscle movements

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
Nose or throat irritation
* Symptoms of a common cold

This is not an exhaustive list of possible side effects. If you have questions or concerns, 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.
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Seek Immediate Medical Attention If You Experience:

  • Severe dizziness or lightheadedness, especially when standing up
  • Fainting spells
  • Unusual swelling of the hands, ankles, or feet (peripheral edema)
  • Difficulty breathing or chest pain
  • Symptoms of high potassium (e.g., muscle weakness, slow or irregular heartbeat)
  • Signs of an allergic reaction (e.g., rash, itching, swelling of face/lips/tongue/throat, severe dizziness, trouble breathing)
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Before Using This Medicine

Before Taking This Medication: Important Information to Share with Your Doctor

It is essential to inform your doctor about the following:

Any allergies you have, including allergies to this medication, its components, or other substances, such as foods or drugs. Be sure to describe the allergic reaction you experienced, including any symptoms that occurred.
If you have kidney disease, as this may affect how your body processes the medication.
If you are taking a medication that contains aliskiren, particularly if you also have diabetes or kidney problems, as this combination may increase the risk of adverse effects.
If you are breast-feeding, as you should not breast-feed while taking this medication.

This list is not exhaustive, and it is crucial to discuss all your medications, including prescription and over-the-counter drugs, natural products, and vitamins, with your doctor and pharmacist. They will help you determine if it is safe to take this medication with your other medications and health conditions.

Remember, do not start, stop, or change the dose of any medication without first consulting your doctor to ensure your safety.
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Precautions & Cautions

It is essential to inform all your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.

When starting this medication, be cautious when performing tasks that require alertness, such as driving, until you understand how it affects you. To minimize the risk of dizziness or fainting, rise slowly from a seated or lying position and exercise caution when navigating stairs.

Regularly monitor your blood pressure as directed by your healthcare provider. Additionally, adhere to the schedule for blood work and other laboratory tests as recommended by your doctor.

Be aware that this medication may rarely cause new or worsening chest pain, particularly when first initiated or when the dosage is increased. In some cases, it may also lead to a heart attack. This risk is potentially higher in individuals with severe heart blood vessel disease. It is crucial to discuss these risks with your doctor.

Before using any over-the-counter (OTC) products that may increase blood pressure, consult with your doctor. These products include cough or cold medications, diet pills, stimulants, non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen or naproxen, and certain natural products or aids.

If you are using a salt substitute containing potassium, a potassium-sparing diuretic, or a potassium product, inform your doctor. Similarly, if you are following a low-salt or salt-free diet, discuss this with your doctor to ensure safe management.

It may take several weeks to experience the full effects of this medication. Before consuming alcohol, consult with your doctor to understand any potential interactions.

In hot weather or during physical activity, be mindful of fluid loss and drink plenty of fluids to stay hydrated. If you experience excessive sweating, fluid loss, vomiting, or diarrhea, notify your doctor, as these conditions may lead to low blood pressure.

If you are 65 years or older, use this medication with caution, as you may be more susceptible to side effects.
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Overdose Information

Overdose Symptoms:

  • Profound hypotension (very low blood pressure)
  • Bradycardia (slow heart rate)
  • Tachycardia (fast heart rate)
  • Shock
  • Electrolyte imbalances (e.g., hyperkalemia)
  • Peripheral vasodilation with reflex tachycardia

What to Do:

Seek immediate medical attention. Call 911 or your local emergency number. For poison control, call 1-800-222-1222. Treatment is supportive and symptomatic. Intravenous fluids and vasopressors may be needed for hypotension. Calcium gluconate may reverse calcium channel blockade effects. Hemodialysis is not effective for amlodipine removal but can remove some valsartan.

Drug Interactions

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Contraindicated Interactions

  • Aliskiren (in patients with diabetes or renal impairment (eGFR <60 mL/min/1.73 m2))
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Major Interactions

  • Potassium-sparing diuretics (e.g., spironolactone, triamterene, amiloride)
  • Potassium supplements
  • Salt substitutes containing potassium
  • NSAIDs (including selective COX-2 inhibitors) - increased risk of renal impairment and reduced antihypertensive effect
  • Lithium (increased serum lithium concentrations and toxicity)
  • Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir, clarithromycin) - increased amlodipine exposure
  • Strong CYP3A4 inducers (e.g., rifampin, St. John's Wort) - decreased amlodipine exposure
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Moderate Interactions

  • Simvastatin (amlodipine increases simvastatin exposure; limit simvastatin dose to 20 mg daily)
  • Other antihypertensive agents (additive hypotensive effect)
  • Grapefruit juice (may increase amlodipine exposure)
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Minor Interactions

  • Not available

Monitoring

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Baseline Monitoring

Blood Pressure (BP)

Rationale: To establish baseline and guide therapy initiation.

Timing: Prior to initiation

Serum Electrolytes (especially Potassium)

Rationale: Valsartan can cause hyperkalemia. Amlodipine can cause peripheral edema.

Timing: Prior to initiation

Renal Function (BUN, Creatinine, eGFR)

Rationale: Valsartan can impair renal function, especially in patients with pre-existing renal impairment or volume depletion.

Timing: Prior to initiation

Liver Function Tests (LFTs)

Rationale: Amlodipine is extensively metabolized by the liver; valsartan is minimally metabolized.

Timing: Prior to initiation

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Routine Monitoring

Blood Pressure (BP)

Frequency: Regularly (e.g., weekly initially, then monthly or as clinically indicated)

Target: <130/80 mmHg (individualized based on guidelines and patient comorbidities)

Action Threshold: If BP remains uncontrolled, consider dose adjustment or additional therapy. If hypotensive, reduce dose.

Serum Electrolytes (Potassium)

Frequency: Periodically (e.g., every 3-6 months, more frequently in patients at risk for hyperkalemia or with renal impairment)

Target: 3.5-5.0 mEq/L

Action Threshold: If K+ >5.5 mEq/L, consider dose reduction or discontinuation. If K+ <3.5 mEq/L, investigate cause and supplement if needed.

Renal Function (BUN, Creatinine, eGFR)

Frequency: Periodically (e.g., every 3-6 months, more frequently in patients with pre-existing renal impairment, heart failure, or on concomitant NSAIDs)

Target: Stable within patient's baseline

Action Threshold: If significant increase in creatinine or decrease in eGFR, investigate cause and consider dose adjustment or discontinuation.

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Symptom Monitoring

  • Dizziness
  • Lightheadedness
  • Fainting (syncope)
  • Peripheral edema (swelling of ankles/feet)
  • Fatigue
  • Headache
  • Flushing
  • Palpitations
  • Symptoms of hyperkalemia (muscle weakness, irregular heartbeat, fatigue)
  • Signs of angioedema (swelling of face, lips, tongue, throat, difficulty breathing)

Special Patient Groups

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Pregnancy

Contraindicated in the second and third trimesters of pregnancy due to the risk of fetal injury and death associated with valsartan. Discontinue as soon as pregnancy is detected.

Trimester-Specific Risks:

First Trimester: Limited data, but risk cannot be excluded. Consider alternative agents.
Second Trimester: High risk of fetal injury (e.g., oligohydramnios, fetal lung hypoplasia, skeletal deformities, anuria, renal failure, death).
Third Trimester: High risk of fetal injury (e.g., oligohydramnios, fetal lung hypoplasia, skeletal deformities, anuria, renal failure, death).
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Lactation

Not recommended during breastfeeding. Both amlodipine and valsartan are excreted into breast milk in small amounts. Due to the potential for serious adverse effects in the infant (e.g., hypotension, hyperkalemia), a decision should be made whether to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother.

Infant Risk: Risk of hypotension, hyperkalemia, and other cardiovascular effects in the infant. Monitor for adverse effects.
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Pediatric Use

Safety and effectiveness have not been established in pediatric patients. Not recommended for use in children.

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Geriatric Use

No overall differences in effectiveness or safety were observed between elderly (â‰Ĩ65 years) and younger patients. However, greater sensitivity of some older individuals cannot be ruled out. Initiate at the lower end of the dosing range and monitor renal function and electrolytes closely, especially in those with impaired renal function or concomitant conditions.

Clinical Information

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Clinical Pearls

  • This combination is typically used when monotherapy with either amlodipine or valsartan is insufficient to control blood pressure.
  • Take the medication at approximately the same time each day to maintain consistent blood levels.
  • Patients should be advised to report any swelling of the hands, ankles, or feet, as peripheral edema is a common side effect of amlodipine.
  • Monitor for symptoms of hyperkalemia (e.g., muscle weakness, fatigue, irregular heartbeat) due to the valsartan component, especially in patients with renal impairment or those taking potassium-sparing diuretics or potassium supplements.
  • Educate patients on the importance of avoiding potassium-containing salt substitutes without consulting their physician.
  • Counsel women of childbearing potential about the risks of fetal exposure and the need to use effective contraception.
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Alternative Therapies

  • Other Angiotensin Receptor Blockers (ARBs) (e.g., losartan, irbesartan, candesartan)
  • Other Calcium Channel Blockers (CCBs) (e.g., nifedipine, felodipine, diltiazem, verapamil)
  • ACE Inhibitors (e.g., lisinopril, enalapril, ramipril)
  • Thiazide Diuretics (e.g., hydrochlorothiazide, chlorthalidone)
  • Beta-blockers (e.g., metoprolol, carvedilol)
  • Alpha-blockers (e.g., prazosin, doxazosin)
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Cost & Coverage

Average Cost: Variable, typically $30-$150 per 30 tablets
Generic Available: Yes
Insurance Coverage: Generic versions are typically Tier 1 or Tier 2. Brand name may be Tier 3 or higher.
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General Drug Facts

If your symptoms or health issues persist or worsen, it's essential to contact your doctor for further guidance. To ensure your safety, never share your medication with others or take someone else's medication. Some medications may come with an additional patient information leaflet, so be sure to check with your pharmacist for more details. If you have any questions or concerns about your medication, don't hesitate to reach out to your doctor, nurse, pharmacist, or other healthcare provider. In the event of a suspected overdose, immediately call your local poison control center or seek medical attention. When seeking help, be prepared to provide information about the medication taken, the amount, and the time it happened.