Exforge HCT 5-160-12.5mg Tablets
Overview
What is this medicine?
How to Use This Medicine
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. Continue taking your medication as directed by your doctor or healthcare provider, even if you start feeling well. To establish a routine, take your medication at the same time every day.
Note that this medication may increase the frequency of urination. To minimize sleep disturbances, try to avoid taking your medication too close to bedtime. Unless your doctor advises you to limit fluid intake, drink plenty of non-caffeinated liquids to stay hydrated.
Storing and Disposing of Your Medication
Store your medication at room temperature in a dry location, avoiding the bathroom. Keep all medications in a safe place, out of the 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. If you have questions about disposing of your medication, consult your pharmacist. You may also want to check if there are drug take-back programs available 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 resume your regular dosing schedule. Do not take two doses at the same time or take extra doses to make up for the missed one.
Lifestyle & Tips
- Take this medication exactly as prescribed, usually once daily with or without food.
- Do not stop taking this medication without consulting your doctor, even if you feel well.
- Continue to follow a low-sodium diet as recommended by your doctor.
- Engage in regular physical activity as advised by your healthcare provider.
- Limit alcohol consumption.
- Avoid grapefruit and grapefruit juice while taking this medication, as it can interact with amlodipine.
- Monitor your blood pressure regularly at home as instructed by your doctor.
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 medical attention right away:
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 high blood sugar, including:
+ Confusion
+ Feeling sleepy
+ Unusual thirst or hunger
+ Passing urine more often
+ Flushing
+ Fast breathing
+ Breath that smells like fruit
Signs of fluid and electrolyte problems, such as:
+ Mood changes
+ Confusion
+ Muscle pain or weakness
+ Fast or abnormal heartbeat
+ Severe dizziness or passing out
+ Increased thirst
+ Seizures
+ Feeling very tired or weak
+ Decreased appetite
+ Unable to pass urine or change in the amount of urine produced
+ Dry mouth
+ Dry eyes
+ Severe upset stomach or throwing up
Signs of kidney problems, including:
+ Unable to pass urine
+ Change in how much urine is passed
+ Blood in the urine
+ Significant weight gain
Signs of liver problems, such as:
+ Dark urine
+ Tiredness
+ Decreased appetite
+ Upset stomach or stomach pain
+ Light-colored stools
+ Throwing up
+ Yellow skin or eyes
Muscle spasm
Chest pain that is new or worsening
Restlessness
Swelling in the arms or legs
Stiff muscles, shakiness, or abnormal muscle movements
Eye problems, such as changes in vision or eye pain, which can lead to permanent vision loss if left untreated. If you experience any eye problems, contact your doctor right away.
Rare but Serious Side Effects
Rarely, people taking hydrochlorothiazide may develop certain types of skin cancer. To minimize your risk, protect your skin from the sun and follow your doctor's instructions for skin checks. If you notice any changes in the color or size of a mole, or any new or changing skin lump or growth, contact your doctor immediately.
Other Side Effects
Most people do not experience serious side effects, and many have only minor or no side effects at all. However, if you experience any of the following side effects, contact your doctor or seek medical attention if they bother you or do not go away:
Feeling dizzy, tired, or weak
Headache
Upset stomach
* Back pain
This is not an exhaustive list of possible side effects. If you have questions or concerns about side effects, contact 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 (especially when standing up)
- Swelling of the face, lips, tongue, or throat (signs of angioedema - seek emergency medical help immediately)
- Difficulty breathing or swallowing
- Signs of electrolyte imbalance: unusual muscle weakness, cramps, irregular heartbeat, excessive thirst, dry mouth, nausea, vomiting
- Signs of kidney problems: little or no urination, swelling in your feet or ankles, feeling tired or short of breath
- Signs of liver problems: yellowing of skin or eyes (jaundice), dark urine, persistent nausea/vomiting, severe stomach pain
- Unexplained weight gain or swelling (worsening edema)
Before Using This Medicine
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.
A known sulfa allergy.
Current or planned use of dofetilide.
Presence of kidney disease or liver disease.
Inability to urinate.
Use of a medication containing aliskiren, particularly if you have diabetes or kidney problems.
* Breastfeeding status, 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 issues with your doctor and pharmacist. They will help determine the safety of taking this medication with your other drugs and health conditions. Never start, stop, or adjust the dose of any medication without first consulting your doctor.
Precautions & Cautions
It is crucial that you inform all of your healthcare providers, including doctors, nurses, pharmacists, and dentists, that you are taking this medication.
Caution with Daily Activities
Until you understand how this medication affects you, avoid driving and other tasks that require your full attention. To minimize the risk of dizziness or fainting, stand up slowly after sitting or lying down, and be cautious when climbing stairs.
Monitoring Your Condition
If you have diabetes, closely monitor your blood sugar levels. Check your blood pressure as directed by your healthcare provider, and undergo blood tests as scheduled. Be aware that this medication may interfere with certain laboratory tests, so inform all healthcare providers and lab personnel that you are taking this medication.
Interactions with Other Substances
If you are using a salt substitute containing potassium, a potassium-sparing diuretic, or a potassium product, consult with your doctor. Additionally, if you are on a low-salt or salt-free diet, discuss this with your doctor.
Potential Side Effects and Risks
It may take several weeks to experience the full effects of this medication. Although rare, new or worsening chest pain can occur after starting or increasing the dose of this medication, which may increase the risk of heart attack, particularly in individuals with severe heart blood vessel disease. Discuss this risk with your doctor.
Over-the-Counter Products and Substances
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, or certain natural products, consult with your doctor. Also, discuss the use of alcohol, marijuana or other cannabis products, or prescription and over-the-counter medications that may cause drowsiness with your doctor.
Precautions in Hot Weather and with Physical Activity
Be cautious in hot weather or during physical activity, and drink plenty of fluids to prevent dehydration. If you experience excessive sweating, fluid loss, vomiting, or diarrhea, inform your doctor, as these symptoms may lead to low blood pressure.
Interactions with Other Medications
If you take cholestyramine or colestipol, consult with your pharmacist about how to take these medications with your current medication. Be aware of the potential for gout attacks.
Special Considerations
If you have lupus, this medication may cause your condition to become active or worsen. Inform your doctor immediately if you experience any new or worsening symptoms. Liver problems have been associated with this medication, and in some cases, hospitalization has been necessary. Discuss this risk with your doctor.
Use in Older Adults
If you are 65 or older, use this medication with caution, as you may be more susceptible to side effects.
Overdose Information
Overdose Symptoms:
- Severe hypotension (dizziness, fainting)
- Bradycardia (slow heart rate)
- Tachycardia (fast heart rate)
- Peripheral vasodilation (flushing, shock)
- Electrolyte disturbances (e.g., hypokalemia, hyponatremia)
- Dehydration
What to Do:
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. Treatment is supportive and symptomatic. If ingestion is recent, gastric lavage or activated charcoal may be considered. Intravenous fluids and vasopressors may be needed for hypotension. Calcium gluconate may reverse the effects of calcium channel blockade. Hemodialysis is not effective for amlodipine or valsartan, but hydrochlorothiazide is dialyzable.
Drug Interactions
Contraindicated Interactions
- Aliskiren (in patients with diabetes or renal impairment)
- Potassium supplements or potassium-sparing diuretics (e.g., spironolactone, triamterene, amiloride) in combination with valsartan
- Lithium (due to increased lithium toxicity with HCTZ and valsartan)
Major Interactions
- NSAIDs (including COX-2 inhibitors) - may reduce antihypertensive effect and increase risk of renal impairment with valsartan and HCTZ
- CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, ritonavir) - may increase amlodipine exposure
- CYP3A4 inducers (e.g., rifampin, St. John's Wort) - may decrease amlodipine exposure
- Other antihypertensive agents - additive hypotensive effects
- Digoxin - increased risk of digitalis toxicity with HCTZ (due to hypokalemia)
- Corticosteroids - enhanced electrolyte depletion, particularly hypokalemia with HCTZ
- Cholestyramine and colestipol resins - may impair absorption of HCTZ
Moderate Interactions
- Alcohol - additive hypotensive effects
- Barbiturates, narcotics - additive hypotensive effects
- Insulin and oral antidiabetic agents - HCTZ may decrease glucose tolerance, requiring dose adjustment of antidiabetic agents
- Non-depolarizing skeletal muscle relaxants - HCTZ may potentiate their effect
- Pressor amines (e.g., norepinephrine) - HCTZ may decrease arterial responsiveness
- Allopurinol - increased risk of hypersensitivity reactions with HCTZ
- Calcium salts - increased serum calcium levels with HCTZ
- Cyclosporine - increased risk of hyperuricemia and gout with HCTZ
- Grapefruit juice - may increase amlodipine exposure
Minor Interactions
- Antacids - may decrease absorption of HCTZ (separate administration)
- Food - generally not clinically significant, but valsartan absorption is reduced
Monitoring
Baseline Monitoring
Rationale: To establish baseline and guide therapy
Timing: Prior to initiation
Rationale: To assess baseline electrolyte status, especially for HCTZ effects
Timing: Prior to initiation
Rationale: To assess baseline kidney function, crucial for valsartan and HCTZ
Timing: Prior to initiation
Rationale: To assess baseline hepatic function, especially for amlodipine and valsartan
Timing: Prior to initiation
Rationale: HCTZ can increase uric acid levels
Timing: Prior to initiation
Rationale: HCTZ can affect glucose metabolism
Timing: Prior to initiation
Routine Monitoring
Frequency: Regularly (e.g., weekly after initiation/dose change, then monthly or quarterly)
Target: <130/80 mmHg (individualized per guidelines)
Action Threshold: Persistent elevation above target or symptomatic hypotension
Frequency: Within 1-2 weeks of initiation/dose change, then periodically (e.g., every 3-6 months) or as clinically indicated
Target: Potassium: 3.5-5.0 mEq/L; Sodium: 135-145 mEq/L
Action Threshold: Hypokalemia (<3.5 mEq/L), Hyperkalemia (>5.5 mEq/L), Hyponatremia (<130 mEq/L)
Frequency: Within 1-2 weeks of initiation/dose change, then periodically (e.g., every 3-6 months) or as clinically indicated
Target: Stable baseline
Action Threshold: Significant increase in creatinine (>30% from baseline) or decrease in eGFR
Frequency: Periodically, especially in diabetic patients
Target: Individualized per diabetes management guidelines
Action Threshold: Significant hyperglycemia
Frequency: Periodically, especially in patients with history of gout or hyperuricemia
Target: Within normal limits
Action Threshold: Significant hyperuricemia or gout flares
Symptom Monitoring
- Dizziness or lightheadedness (especially upon standing)
- Swelling of ankles, feet, or hands (peripheral edema)
- Unusual fatigue or weakness
- Muscle cramps or weakness (signs of electrolyte imbalance)
- Excessive thirst or dry mouth
- Nausea or vomiting
- Signs of angioedema (swelling of face, lips, tongue, throat, difficulty breathing)
- Changes in urination (frequency, volume)
- Chest pain or palpitations
Special Patient Groups
Pregnancy
Contraindicated. Exforge HCT can cause fetal harm or death when administered to a pregnant woman. Discontinue as soon as pregnancy is detected.
Trimester-Specific Risks:
Lactation
Not recommended. Amlodipine, valsartan, and hydrochlorothiazide are excreted in human milk. Due to the potential for serious adverse reactions in breastfed infants (e.g., hypotension, hyperkalemia, electrolyte disturbances), a decision should be made whether to discontinue nursing or discontinue the drug, taking into account the importance of the drug to the mother.
Pediatric Use
Safety and effectiveness have not been established in pediatric patients. Not recommended for use in this population.
Geriatric Use
No overall differences in effectiveness or safety were observed between elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. Start with lower doses and titrate carefully, monitoring renal function and electrolytes closely due to increased susceptibility to adverse effects and potential for polypharmacy.
Clinical Information
Clinical Pearls
- Exforge HCT is a fixed-dose combination and should not be used for initial therapy of hypertension. It is intended for patients whose blood pressure is not adequately controlled on dual therapy or for whom triple therapy is appropriate.
- Monitor for signs of angioedema, especially in patients with a history of angioedema with ACE inhibitors or ARBs.
- Patients should be advised to report any symptoms of electrolyte imbalance (e.g., muscle cramps, weakness, irregular heartbeat).
- Due to the hydrochlorothiazide component, monitor for hyperuricemia and hyperglycemia, especially in patients with a history of gout or diabetes.
- Peripheral edema is a common side effect of amlodipine; it may be less pronounced in combination with an ARB like valsartan.
- Counsel patients on the importance of adherence and lifestyle modifications (diet, exercise) for optimal blood pressure control.
Alternative Therapies
- Individual components (Amlodipine, Valsartan, Hydrochlorothiazide) taken separately
- Other classes of antihypertensives (e.g., ACE inhibitors, Beta-blockers, Alpha-blockers, direct vasodilators)
- Dual therapy combinations (e.g., ARB + CCB, ARB + Diuretic, ACEI + Diuretic)