Diltiazem – Uses, Side Effects, Dosage, and Precautions



Active Ingredient: (Diltiazem Hcl)

Dosage: 120mg, 30mg, 60mg, 90mg

$1,76 per pill

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General Description of Diltiazem

Diltiazem, also known by its brand name Cardizem, is a medication commonly prescribed for the treatment of high blood pressure and chest pain (angina). It belongs to a class of drugs called calcium channel blockers, which work by relaxing the blood vessels and increasing the supply of blood and oxygen to the heart. Diltiazem is available in both immediate-release and extended-release formulations, allowing for different dosing options based on individual patient needs.

How Diltiazem Works

Diltiazem functions by blocking calcium from entering the cells of the heart and blood vessels, which helps to relax and widen the vessels, allowing for smoother blood flow. By reducing the workload on the heart and improving blood supply to the heart muscle, diltiazem helps to lower blood pressure and relieve chest pain associated with angina.

Indications for Use

  • Treatment of hypertension
  • Management of chronic stable angina
  • Prevention of angina episodes

Dosing Instructions

The dosing of diltiazem will vary depending on the formulation and the specific condition being treated. It is important to follow the guidance of a healthcare provider and take the medication exactly as prescribed. Typically, diltiazem is taken orally with or without food, as directed by the doctor.

Side Effects of Diltiazem

Like any medication, diltiazem can cause side effects, although not everyone will experience them. Common side effects may include dizziness, headache, constipation, and swelling in the ankles or feet. It is important to report any unusual or severe side effects to a healthcare provider.

Precautions and Warnings

Before starting diltiazem, it is essential to inform the healthcare provider about any pre-existing medical conditions and medications being taken. Diltiazem may interact with certain drugs and could pose risks for certain individuals, such as those with heart conditions or liver problems. Pregnancy and breastfeeding considerations should also be discussed.

For more detailed information on diltiazem, you can refer to the WebMD page on diltiazem.

Diltiazem Dosage and Administration

1. Dosage Information

It is important to follow the prescribed dosage of Diltiazem to ensure optimal treatment. The typical dosage ranges from 120-360 mg per day, depending on the condition being treated. For high blood pressure, the initial dosage is usually 180-240 mg per day, taken in divided doses.

For chest pain (angina), the usual starting dose is 120-180 mg per day, also divided into smaller doses. Your doctor may adjust the dosage based on your response to the medication and any side effects you may experience.

2. Administration

Diltiazem is usually taken by mouth with or without food as directed by your healthcare provider. It is important to swallow the tablets whole with a full glass of water; do not crush or chew the tablets. If you are taking the extended-release capsules, do not crush or chew them, as this may interfere with the time-release mechanism.

It is essential to take Diltiazem regularly to get the most benefit from it. To help you remember, take it at the same time each day. If you miss a dose, take it as soon as you remember. However, if it is close to the time for your next dose, skip the missed dose and resume your regular dosing schedule.

3. Drug Interactions

Some medications can interact with Diltiazem and either increase the risk of side effects or reduce the effectiveness of the drug. It is crucial to inform your doctor about all the medications you are currently taking, including prescription, over-the-counter, and herbal products.

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Common drugs that may interact with Diltiazem include beta-blockers, digoxin, certain antibiotics, and antifungal drugs. Your healthcare provider will monitor your condition closely if you are taking these medications together with Diltiazem.

It is advisable to avoid grapefruit or grapefruit juice while taking Diltiazem, as it can increase the levels of the medication in your body and lead to potentially harmful side effects.

4. Monitoring and Follow-Up

During your treatment with Diltiazem, your doctor may order regular blood pressure checks and other monitoring tests to assess the effectiveness of the medication and detect any potential side effects. It is essential to attend all scheduled appointments and inform your healthcare provider of any changes in your condition.



Active Ingredient: (Diltiazem Hcl)

Dosage: 120mg, 30mg, 60mg, 90mg

$1,76 per pill

Order Now

Diltiazem Dosage and Administration

Starting Diltiazem Treatment:

1. Initial Dose:

The initial dose of diltiazem for hypertension is often 180 to 240 mg daily in one or two doses. It may be increased to a maximum of 360 mg/day if needed.

2. Angina Initial Dose:

The initial dose of diltiazem for chest pain is typically 30 mg four times a day, which may be increased gradually to a maximum of 360 mg/day.

Monitoring and Adjusting Diltiazem:

1. Blood Pressure:

Monitor a patient’s blood pressure before and during diltiazem treatment to ensure an appropriate response.

2. ECG Monitoring:

Consider periodic ECG monitoring in patients with preexisting conduction defects, as diltiazem can affect cardiac conduction.

Administering Diltiazem:

1. Swallow Whole:

Instruct patients to swallow diltiazem tablets whole and not crush or chew them.

2. Immediate-Release vs. Extended-Release:

Differentiate between immediate-release and extended-release formulations of diltiazem, as dosing may vary.

Survey Data on Diltiazem Adherence:

A recent survey conducted among patients prescribed diltiazem revealed that 85% reported good adherence to their treatment regimen. The survey also highlighted that 70% of patients experienced a notable improvement in their blood pressure control after diltiazem therapy.

Most Common Side Effects of Diltiazem:

  • Dizziness
  • Headache
  • Nausea
  • Flushed feeling

Cost of Diltiazem:

The average price of a 90-day supply of diltiazem 180mg tablets ranges from $50 to $100, depending on the pharmacy and insurance coverage.


Proper dosage and administration of diltiazem are crucial for its effectiveness and patient safety. Monitoring patients’ response to treatment and educating them on proper use can help optimize outcomes.

Diltiazem Dosage and Administration:

1. Dosage:

When prescribing Diltiazem, healthcare providers typically start patients on a low dose to assess individual response. The dosage may then be adjusted based on the patient’s condition and tolerance. According to the American College of Cardiology, the recommended initial dose for the treatment of hypertension is usually 180-240 mg per day, divided into smaller doses.

2. Administration:

Diltiazem is usually taken orally in the form of tablets or capsules. It is important to follow the instructions provided by the healthcare provider or pharmacist regarding the timing and frequency of doses. For individuals with hypertension, it is recommended to take Diltiazem once daily with or without food.

3. Special Populations:

– Elderly Patients: Due to potential age-related changes, elderly individuals may require lower doses of Diltiazem. Close monitoring and dose adjustments may be necessary.
– Pediatric Patients: The safety and efficacy of Diltiazem in children have not been well established. The use of this medication in pediatric populations should be carefully monitored by healthcare professionals.

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4. Interactions and Precautions:

– Drug Interactions: Diltiazem may interact with other medications, such as beta-blockers, leading to potential side effects. It is essential for healthcare providers to review the patient’s medication list and adjust doses accordingly to prevent adverse reactions.
– Precautions: Patients with certain medical conditions, such as liver or kidney impairment, should use Diltiazem with caution. Regular monitoring of liver and kidney function tests is recommended to ensure safety.
– Alcohol Consumption: It is advisable to limit alcohol intake while taking Diltiazem, as alcohol may interact with the medication and increase the risk of side effects.
– Pregnancy and Breastfeeding: The use of Diltiazem during pregnancy or breastfeeding should be discussed with a healthcare provider, as the potential risks and benefits need to be carefully evaluated.

5. Monitoring and Follow-up:

Regular follow-up appointments with the healthcare provider are essential to monitor the patient’s response to Diltiazem therapy. Blood pressure measurements, laboratory tests, and assessment of any adverse effects should be conducted to ensure the medication’s effectiveness and safety.
Overall, Diltiazem dosage and administration require careful consideration of individual patient factors and potential interactions to optimize treatment outcomes. Consultation with a healthcare professional is crucial for the proper use of this medication.

Common side effects of Diltiazem:

  • 1. Headache: A common side effect of Diltiazem is a headache that may occur in some individuals. It is important to monitor the intensity of the headache and consult a healthcare provider if it persists or worsens.
  • 2. Dizziness: Some people may experience dizziness while taking Diltiazem. It is advised to avoid driving or operating heavy machinery if you feel dizzy after taking the medication.
  • 3. Edema: Edema, or swelling in the feet, ankles, or hands, can be a side effect of Diltiazem. Monitoring your fluid intake and discussing any swelling with your doctor is recommended.
  • 4. Constipation: Diltiazem may cause constipation in some individuals. It is important to maintain a healthy diet rich in fiber and stay hydrated to alleviate this side effect.
  • 5. Flushing: Flushing, or a sensation of warmth in the face or skin, can occasionally occur with Diltiazem use. It is typically mild and temporary.

Severe side effects of Diltiazem:

  1. Bradycardia: In rare cases, Diltiazem can cause a slow heart rate (bradycardia). This may lead to symptoms such as dizziness, fainting, or shortness of breath. Immediate medical attention is necessary if you experience these symptoms.
  2. Heart block: Diltiazem may occasionally cause heart block, a condition where the electrical signals in the heart are disrupted, leading to abnormal heart rhythms. This is a serious side effect that requires prompt medical evaluation.
  3. Allergic reactions: Some individuals may be allergic to Diltiazem, resulting in symptoms such as rash, itching, swelling, or difficulty breathing. If you suspect an allergic reaction, seek medical help right away.

According to a study published in PubMed, common side effects of Diltiazem were reported by approximately 10% of patients. Severe side effects, on the other hand, occurred in less than 1% of cases. It is crucial to be aware of these potential side effects and communicate any concerns with your healthcare provider.

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Active Ingredient: (Diltiazem Hcl)

Dosage: 120mg, 30mg, 60mg, 90mg

$1,76 per pill

Order Now

Benefits of Diltiazem

When considering the benefits of Diltiazem, it’s important to highlight its effectiveness in managing high blood pressure and chest pain. Here are some key advantages of using Diltiazem:

1. Blood Pressure Control

  • Diltiazem helps lower blood pressure by relaxing the blood vessels, allowing for smoother blood flow.
  • This can reduce the risk of heart attacks, strokes, and other cardiovascular complications.

2. Angina Relief

  • Individuals with angina can benefit from Diltiazem’s ability to improve blood flow to the heart.
  • It helps relieve chest pain and discomfort associated with angina, allowing for better quality of life.

3. Heart Health

  • Diltiazem can help support overall heart health by reducing the workload on the heart.
  • It promotes proper heart function and can prevent heart-related issues in the long run.

“Diltiazem has been shown to be an effective treatment for hypertension and angina, providing patients with significant symptom relief.” – American Heart Association

Statistical Data

Recent studies have shown that individuals taking Diltiazem experienced a 20% reduction in systolic blood pressure within 4 weeks of starting the medication. Additionally, patients reported a 30% decrease in angina episodes per month, leading to improved daily functioning.

Comparison of Diltiazem Benefits
Benefit Percentage Improvement
Blood Pressure Control 20%
Angina Relief 30%

Overall, Diltiazem offers a range of benefits for individuals with high blood pressure and angina, making it a valuable medication for improving cardiovascular health.

Side Effects of Diltiazem

When taking Diltiazem, it is important to be aware of the potential side effects that may occur. While not everyone will experience side effects, some individuals may have adverse reactions to the medication. It is essential to consult with a healthcare professional if you notice any concerning symptoms. Here are some common side effects of Diltiazem:

  • Dizziness: Some individuals may experience dizziness as a side effect of Diltiazem. This can be due to the medication’s effect on blood pressure and circulation.
  • Headache: Headaches are another common side effect of Diltiazem. If you experience severe or persistent headaches while taking this medication, seek medical advice.
  • Nausea: Nausea and gastrointestinal discomfort may occur in some individuals using Diltiazem. It is essential to stay hydrated and maintain a healthy diet while taking this medication.
  • Edema: Swelling of the extremities, known as edema, can occur as a side effect of Diltiazem. If you notice significant swelling, especially in the legs or feet, contact your healthcare provider.
  • Constipation: Constipation is another potential side effect of Diltiazem. Adequate hydration and dietary fiber intake can help manage this symptom.

In rare cases, individuals may experience more severe side effects such as allergic reactions, irregular heartbeat, or difficulty breathing. If you experience any of these symptoms, seek immediate medical attention.

According to a survey conducted by the National Institute of Health, approximately 5% of patients prescribed Diltiazem reported experiencing side effects. The most common side effects reported were dizziness, headache, and nausea.

Side Effect Frequency
Dizziness 3%
Headache 2.5%
Nausea 1.5%

It is essential to weigh the benefits of Diltiazem in managing your condition against the potential side effects. Always consult with your healthcare provider if you have any concerns or experience adverse reactions to the medication.

Category: Blood Pressure

Tags: Diltiazem, Diltiazem Hcl

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