Exforge 5/160mg Tablets

Manufacturer NOVARTIS 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 (CCB) / Angiotensin II Receptor Blocker (ARB) Combination
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Pregnancy Category
Category D
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FDA Approved
Aug 2007
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DEA Schedule
Not Controlled

Overview

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What is this medicine?

Exforge is a combination medicine used to treat high blood pressure (hypertension). It contains two different drugs: Amlodipine, which relaxes blood vessels so blood can flow more easily, and Valsartan, which blocks a natural substance in the body that narrows blood vessels. Together, they help lower your blood pressure, which can reduce your risk of heart attack, stroke, and kidney problems.
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How to Use This Medicine

Taking Your Medication Correctly

To get the most benefit from your medication, follow your doctor's instructions carefully. Read all the information provided with your prescription and follow the instructions closely. You can take this medication with or without food, and it's best to take it at the same time every day. Continue taking your medication as directed by your doctor or healthcare provider, even if you start to feel better.

It's also important to stay hydrated by drinking plenty of non-caffeinated liquids, unless your doctor advises you to limit your fluid intake.

Storing and Disposing of Your Medication

To keep your medication safe and effective, store it at room temperature in a dry place, away from the bathroom. Keep all medications out of the reach of children and pets, and store them in a secure location. When you're finished with your medication or it's expired, dispose of it properly. Do not flush it down the toilet or pour it down the drain unless you're instructed to do so by your doctor or pharmacist. If you're unsure about how to dispose of your medication, ask your pharmacist for guidance. You may also want to check if there are any drug take-back programs in your area.

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 continue with your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for a missed one.
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Lifestyle & Tips

  • Take medication exactly as prescribed, usually once daily, with or without food.
  • Do not stop taking the medication without consulting your doctor, even if you feel well.
  • Monitor your blood pressure regularly at home as advised 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 intake.
  • Avoid potassium supplements or salt substitutes containing potassium unless directed by your doctor.
  • Inform your doctor or dentist that you are taking this medication before any surgery or dental procedures.

Dosing & Administration

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Adult Dosing

Standard Dose: Initial dose is typically 5/80 mg or 5/160 mg orally once daily. May be titrated up to a maximum of 10/320 mg once daily.
Dose Range: 5 - 320 mg

Condition-Specific Dosing:

hypertension: Initial dose 5/80 mg or 5/160 mg once daily. Dose may be increased after 1 to 2 weeks to a maximum of 10/320 mg once daily based on blood pressure response.
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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. Monitor renal function and potassium levels.
Severe: Not recommended (CrCl <30 mL/min) due to limited data and potential for increased valsartan exposure.
Dialysis: Not recommended. Valsartan is not significantly removed by hemodialysis.

Hepatic Impairment:

Mild: Caution advised. Consider lower starting dose of amlodipine (2.5 mg) if appropriate. Monitor closely.
Moderate: Caution advised. Not recommended for severe hepatic impairment. Valsartan exposure may be increased.
Severe: Not recommended due to lack of data and potential for increased exposure to both amlodipine and valsartan.

Pharmacology

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Mechanism of Action

Exforge is a combination of two antihypertensive agents: Amlodipine, a dihydropyridine calcium channel blocker (CCB), and Valsartan, an angiotensin II receptor blocker (ARB). Amlodipine inhibits the transmembrane influx of calcium ions into vascular smooth muscle and myocardial cells, leading to peripheral arterial vasodilation and reduction in peripheral vascular resistance, thereby lowering blood pressure. Valsartan selectively blocks the binding of angiotensin II to the AT1 receptor in various tissues, including vascular smooth muscle and the adrenal gland. This blockade inhibits the vasoconstrictor and aldosterone-secreting effects of angiotensin II, leading to vasodilation, decreased aldosterone secretion, and reduced 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: Not significantly affected by food; Valsartan: Food decreases AUC by 48% and Cmax by 59%, but does not significantly affect clinical efficacy.

Distribution:

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

Elimination:

HalfLife: Amlodipine: 30-50 hours; Valsartan: ~6 hours
Clearance: Amlodipine: Not readily dialyzable; Valsartan: ~2 L/hr
ExcretionRoute: Amlodipine: Urine (60% as metabolites, 10% unchanged), Feces (20-25%); Valsartan: Feces (83% unchanged), Urine (13% unchanged)
Unchanged: Amlodipine: ~10%; Valsartan: ~83% (feces), ~13% (urine)
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Pharmacodynamics

OnsetOfAction: Amlodipine: Gradual, full effect over several days; Valsartan: Within 2 hours
PeakEffect: Amlodipine: 6-12 hours; Valsartan: 2-4 hours
DurationOfAction: Amlodipine: >24 hours; Valsartan: >24 hours

Safety & Warnings

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BLACK BOX WARNING

When pregnancy is detected, discontinue Exforge 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

While rare, some people may experience severe and potentially life-threatening side effects when 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 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. Many people experience no side effects or only mild ones. If you notice 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
* Signs of a common cold

This is not a comprehensive list of all 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.
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Seek Immediate Medical Attention If You Experience:

  • Severe dizziness or fainting (signs of low blood pressure)
  • Swelling of the face, lips, tongue, or throat (signs of angioedema - seek immediate medical attention)
  • Difficulty breathing or swallowing (signs of angioedema - seek immediate medical attention)
  • Yellowing of the skin or eyes (jaundice), dark urine, or persistent nausea/vomiting (signs of liver problems)
  • Unusual tiredness, weakness, or muscle cramps (signs of high potassium)
  • Significant increase in swelling of ankles or feet
  • Signs of kidney problems (e.g., decreased urination, swelling in legs/feet)
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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. Be sure to describe the allergic reaction and its symptoms.
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 have diabetes or kidney problems, as this combination may increase the risk of adverse effects.
If you are breastfeeding, as you should not breastfeed while taking this medication.

This list is not exhaustive, and it is crucial to discuss all your medications (prescription, over-the-counter, natural products, and vitamins) and health conditions with your doctor and pharmacist. They will help you determine whether it is safe to take this medication in combination with your other medications and health conditions. Never start, stop, or change the dose of any medication without first consulting your doctor.
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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 driving or performing tasks that require alertness, as it may affect you. To minimize the risk of dizziness or fainting, get up slowly from a sitting or lying position, and be careful when climbing stairs.

Regularly check your blood pressure as directed by your healthcare provider. Additionally, have your blood work and other laboratory tests done as scheduled by your doctor.

Be aware that this medication may rarely cause new or worsening chest pain, which can increase the risk of a heart attack. This risk may be higher in individuals with severe heart blood vessel disease. Discuss this with your doctor.

Before using over-the-counter (OTC) 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, consult with your doctor.

If you are taking a salt substitute containing potassium, a potassium-sparing diuretic, or a potassium product, discuss this with your doctor. Also, if you are on a low-salt or salt-free diet, consult with your doctor.

It may take several weeks to experience the full effects of this medication. Before consuming alcohol, talk to your doctor.

In hot weather or during physical activity, be cautious and drink plenty of fluids to avoid dehydration. If you experience excessive sweating, fluid loss, vomiting, or diarrhea, inform your doctor, as these symptoms 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)
  • Peripheral vasodilation (extreme widening of blood vessels)
  • Shock with fatal outcome
  • Dizziness
  • Lightheadedness

What to Do:

Call 911 or Poison Control (1-800-222-1222) immediately. Support of the cardiovascular system is paramount. Place patient in supine position with legs elevated. If ingestion is recent, gastric lavage may be considered. Administer activated charcoal. Intravenous calcium gluconate may reverse the effects of calcium channel blockade. Vasopressors (e.g., norepinephrine) may be needed for persistent hypotension. Atropine for bradycardia. Hemodialysis is unlikely to be effective for amlodipine and minimally effective for valsartan.

Drug Interactions

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Contraindicated Interactions

  • Aliskiren (in patients with diabetes or renal impairment [GFR <60 mL/min/1.73 mΒ²])
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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)
  • Lithium
  • CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir, clarithromycin) - may increase amlodipine exposure
  • Simvastatin - amlodipine increases simvastatin exposure (limit simvastatin dose to 20 mg/day)
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Moderate Interactions

  • CYP3A4 inducers (e.g., rifampin, St. John's Wort, carbamazepine, phenobarbital, phenytoin) - may decrease amlodipine exposure
  • Other antihypertensive agents (additive hypotensive effect)
  • Grapefruit juice (may increase amlodipine exposure)
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Minor Interactions

  • Not typically listed as clinically significant for this combination

Monitoring

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Baseline Monitoring

Blood Pressure (BP)

Rationale: To establish baseline and guide initial dosing.

Timing: Prior to initiation

Heart Rate (HR)

Rationale: To establish baseline.

Timing: Prior to initiation

Serum Creatinine (SCr) and Blood Urea Nitrogen (BUN)

Rationale: To assess renal function, especially important with ARB component.

Timing: Prior to initiation

Serum Potassium (K+)

Rationale: To assess baseline electrolyte status, as ARBs can cause hyperkalemia.

Timing: Prior to initiation

Liver Function Tests (LFTs)

Rationale: To assess hepatic function, as both drugs are metabolized by the liver.

Timing: Prior to initiation (especially in patients with suspected impairment)

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Routine Monitoring

Blood Pressure (BP)

Frequency: Regularly, e.g., weekly after dose changes, then monthly/quarterly once stable

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

Action Threshold: If BP remains uncontrolled or drops excessively

Serum Creatinine (SCr) and Blood Urea Nitrogen (BUN)

Frequency: Periodically, e.g., 1-2 weeks after initiation or dose increase, then every 6-12 months

Target: Within normal limits or stable for patient

Action Threshold: Significant increase (e.g., >30% from baseline) or signs of acute kidney injury

Serum Potassium (K+)

Frequency: Periodically, e.g., 1-2 weeks after initiation or dose increase, then every 6-12 months

Target: 3.5-5.0 mEq/L

Action Threshold: K+ >5.5 mEq/L or rapid increase

Signs/Symptoms of Peripheral Edema

Frequency: At each visit

Target: Absence of significant edema

Action Threshold: New or worsening edema, especially if bothersome

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Symptom Monitoring

  • Dizziness
  • Lightheadedness
  • Fainting (syncope)
  • Swelling of ankles, feet, or hands (peripheral edema)
  • Unusual fatigue or weakness
  • Shortness of breath
  • Chest pain
  • Rapid or irregular heartbeat
  • Signs of angioedema (swelling of face, lips, tongue, throat, difficulty breathing or swallowing)

Special Patient Groups

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Pregnancy

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

Trimester-Specific Risks:

First Trimester: Limited data, but potential risk cannot be excluded. ARBs are generally avoided.
Second Trimester: Significant risk of fetal injury (e.g., oligohydramnios, fetal lung hypoplasia, skeletal deformations, anuria, renal failure, death).
Third Trimester: Significant risk of fetal injury (e.g., oligohydramnios, fetal lung hypoplasia, skeletal deformations, anuria, renal failure, death).
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Lactation

Caution is advised. Both amlodipine and valsartan are excreted in breast milk. Monitor breastfed infants for adverse effects (e.g., hypotension, lethargy). Consider the developmental and health benefits of breastfeeding along with the mother’s clinical need for Exforge and any potential adverse effects on the breastfed infant.

Infant Risk: L3 (Moderately safe; monitor infant for hypotension, lethargy, and other potential adverse effects).
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Pediatric Use

Safety and effectiveness have not been established in pediatric patients (under 18 years of age). Not recommended for use in this population.

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Geriatric Use

No overall differences in efficacy or safety were observed between elderly (β‰₯65 years) and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Start at the lower end of the dosing range and monitor renal function and potassium levels closely due to increased likelihood of decreased renal function in the elderly.

Clinical Information

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Clinical Pearls

  • Exforge is a fixed-dose combination and should not be used for initial therapy in patients with uncomplicated hypertension.
  • It is typically used when blood pressure is not adequately controlled with either amlodipine or valsartan monotherapy.
  • Peripheral edema is a common side effect of amlodipine; the valsartan component may help mitigate this effect in some patients.
  • Patients should be advised to report any signs of angioedema (swelling of face, lips, tongue, throat) immediately, as this is a rare but serious side effect of ARBs.
  • Monitor for hyperkalemia, especially in patients with renal impairment, diabetes, or those taking potassium-sparing diuretics or potassium supplements.
  • Avoid concomitant use with aliskiren in patients with diabetes or moderate to severe renal impairment.
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Alternative Therapies

  • ACE Inhibitors (e.g., Lisinopril, Enalapril)
  • Other Angiotensin Receptor Blockers (e.g., Losartan, Irbesartan)
  • Other Calcium Channel Blockers (e.g., Nifedipine, Diltiazem)
  • Thiazide Diuretics (e.g., Hydrochlorothiazide, Chlorthalidone)
  • Beta-blockers (e.g., Metoprolol, Carvedilol)
  • Alpha-blockers (e.g., Doxazosin, Terazosin)
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Cost & Coverage

Average Cost: $100 - $300+ per 30 tablets
Generic Available: Yes
Insurance Coverage: Tier 2 or Tier 3 (for brand name); Tier 1 (for generic)
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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 information. If you have any questions or concerns about this 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 emergency medical attention. When seeking help, be prepared to provide details about the medication, including the amount taken and the time it happened, to facilitate prompt and effective treatment.