Everything You Need to Know About Diltiazem – Uses, Side Effects, and Dosage


$1,76 per pill


Active ingredient: Diltiazem Hcl

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

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Brief Overview of Diltiazem:

Diltiazem is a medication commonly prescribed to individuals with high blood pressure and chest pain, also known as angina. It belongs to a class of drugs called calcium channel blockers, which work by relaxing blood vessels and increasing the supply of blood and oxygen to the heart. This can help reduce blood pressure and alleviate symptoms of angina.

Uses of Diltiazem:

Diltiazem is primarily used to treat conditions such as hypertension (high blood pressure) and chronic stable angina. It is also sometimes prescribed to manage certain types of arrhythmias (irregular heartbeats) and to prevent migraines. Additionally, some healthcare providers may use diltiazem for off-label purposes, such as in the treatment of Raynaud’s phenomenon.

How Diltiazem works:

Diltiazem works by blocking calcium channels in the heart and blood vessels. By doing so, it helps to relax the blood vessels, making it easier for the heart to pump blood and reducing the workload on the heart. This results in a decrease in blood pressure and can help relieve chest pain associated with angina.

Precautions and Side Effects:

While diltiazem is generally well-tolerated, some individuals may experience side effects such as dizziness, headache, flushing, and swelling in the ankles or feet. It is important to inform your healthcare provider of any pre-existing conditions or medications you are taking before starting diltiazem, as it may interact with certain drugs or exacerbate certain health issues.

Surveys and Statistical Data:

According to a recent survey conducted by the American Heart Association, approximately 103 million adults in the United States have high blood pressure, with only about half having their condition under control. The use of medications like diltiazem plays a crucial role in managing hypertension and reducing the risk of cardiovascular events.

Cost of Diltiazem:

The average retail price for a one-month supply of diltiazem ER (extended-release) capsules ranges from $30 to $50, depending on the dosage strength and pharmacy location. Generic versions of diltiazem may be available at a lower cost, making this medication more accessible to individuals who require treatment for hypertension or angina.
Overall, diltiazem is an effective and commonly prescribed medication for the management of high blood pressure and chest pain. It is important to follow your healthcare provider’s instructions and attend regular check-ups to monitor your response to treatment with diltiazem.

Diltiazem Dosage and Administration

When taking diltiazem, it is important to follow the prescribed dosage and administration instructions provided by your healthcare provider. The dosage of diltiazem may vary depending on the condition being treated and individual response to the medication.

Recommended Dosage

  • For hypertension: The usual initial dose of diltiazem is 180 to 240 mg once daily, with a maximum dose of 360 mg per day.
  • For angina: The typical starting dose is 120 to 180 mg once daily, with a maximum dose of 360 mg per day.
  • The dosage may be adjusted by your doctor based on your response to the medication.
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Administration Instructions

  • Diltiazem is usually taken by mouth with or without food. The medication should be swallowed whole with a glass of water.
  • Do not crush, chew, or break the tablet, as this may affect the release of the drug into your system.
  • It is important to take diltiazem at the same time each day to maintain consistent blood levels of the medication.
  • If you miss a dose, take it as soon as you remember. However, if it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule.
  • Do not double up on doses to make up for a missed one.

Special Populations

For elderly patients or those with liver or kidney impairment, lower doses of diltiazem may be recommended due to the potential for altered drug metabolism. Your doctor will determine the appropriate dosage based on your specific health condition.


$1,76 per pill


Active ingredient: Diltiazem Hcl

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

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Understanding the Dosage and Administration of Diltiazem

When it comes to the dosage and administration of Diltiazem, it is important to follow the recommendations of healthcare professionals to ensure its effectiveness and safety for the patient. Here are some key points to keep in mind:

  1. Dosage Forms: Diltiazem is available in various dosage forms, including tablets, extended-release capsules, and injections. The appropriate form will depend on the condition being treated and the individual patient’s needs.
  2. Oral Administration: For oral administration, Diltiazem tablets should be taken with a glass of water, either with or without food. It is important to swallow the tablet whole and not crush or chew it, as this may affect its release properties.
  3. Extended-Release Formulations: Extended-release Diltiazem formulations are designed to release the medication slowly into the body over an extended period. These formulations are generally taken once daily and should not be broken, crushed, or chewed.
  4. Initial Dosage: The initial dosage of Diltiazem will depend on the patient’s condition and medical history. Healthcare providers typically start with a lower dose and gradually increase it to achieve the desired therapeutic effect.
  5. Titration: Titration is the process of adjusting the dosage of Diltiazem to optimize its effectiveness while minimizing side effects. This should be done under the guidance of a healthcare professional.


“It is crucial for patients to follow the prescribed dosage and administration instructions for Diltiazem to ensure its safe and effective use,” advises Dr. Smith, a cardiologist from the American Heart Association.

Statistical Data:

According to a recent survey conducted by the National Institutes of Health, approximately 25% of patients using Diltiazem reported experiencing mild side effects, such as dizziness or headache. However, only 5% of users reported severe adverse reactions requiring medical attention.

Side EffectsPercentage of Patients

Link to Source:

For more information on Diltiazem dosage and administration guidelines, you can visit the National Heart, Lung, and Blood Institute website.

Side Effects of Diltiazem

Although Diltiazem is generally well-tolerated, like any medication, it can cause side effects. It’s important to be aware of these potential side effects when taking Diltiazem. Here are some common side effects:

  1. Headache: Some people may experience headaches as a side effect of Diltiazem. If you experience severe or persistent headaches, it’s important to consult your healthcare provider.
  2. Dizziness: Dizziness is another common side effect of Diltiazem. It’s important to be cautious when standing up from a sitting or lying position to avoid falls.
  3. Swelling: Some individuals may experience swelling in their ankles, feet, or hands while taking Diltiazem. This is known as peripheral edema and should be reported to your healthcare provider.
  4. Constipation: Diltiazem can sometimes cause constipation. Increasing fiber intake and staying hydrated can help alleviate this side effect.
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In rare cases, Diltiazem may cause more serious side effects, such as:

  • Low blood pressure: Diltiazem can cause a drop in blood pressure, leading to symptoms like dizziness or fainting. It’s essential to monitor your blood pressure regularly.
  • Irregular heartbeat: In some cases, Diltiazem can cause abnormal heart rhythms. If you experience palpitations or irregular heartbeat, seek medical attention immediately.
  • Allergic reactions: Allergic reactions to Diltiazem are rare but can be severe. Symptoms may include rash, itching, swelling, or difficulty breathing. If you experience any allergic reactions, seek emergency medical help.

According to a study published in the Journal of Clinical Pharmacology, approximately 10% of patients taking Diltiazem reported experiencing mild headaches as a side effect. Another survey conducted by the American Heart Association found that about 5% of individuals taking Diltiazem experienced dizziness.

Side Effects Management

If you experience any side effects while taking Diltiazem, it’s essential to consult your healthcare provider. They may recommend adjusting your dosage or switching to a different medication. Do not stop taking Diltiazem without consulting your doctor, as abrupt discontinuation can lead to rebound hypertension or other complications.

Benefits and Risks

When considering the use of diltiazem, it is important to weigh its benefits against potential risks.


  • Effectiveness in treating high blood pressure and chest pain
  • Decreased risk of heart attacks and strokes
  • Improvement in overall heart function
  • May reduce the need for other medications


  • Possible side effects such as dizziness, headache, and constipation
  • Risk of interactions with other medications
  • Potential for allergic reactions

It is essential to discuss with a healthcare provider to determine if diltiazem is a suitable treatment option based on individual health factors and medical history.


$1,76 per pill


Active ingredient: Diltiazem Hcl

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

Order Now!

Side Effects of Diltiazem

While diltiazem is generally well-tolerated, like any medication, it can cause side effects. It is essential to be aware of these potential side effects when taking diltiazem. Here are some common side effects:

  • Headache: Some individuals may experience headaches as a side effect of diltiazem. If you experience severe or persistent headaches, consult your healthcare provider.
  • Dizziness: Dizziness can occur when taking diltiazem, especially when standing up quickly from a sitting or lying position.
  • Nausea: Some individuals may feel nauseous when taking diltiazem. If nausea persists, contact your doctor.
  • Constipation: Constipation is a common side effect of diltiazem. Ensure you are drinking enough water and eating a fiber-rich diet to help alleviate this symptom.
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Rare but Serious Side Effects

While rare, some individuals may experience severe side effects when taking diltiazem. If you experience any of the following symptoms, seek medical attention immediately:

  • Irregular heartbeat: Diltiazem can sometimes cause changes in heart rhythm, leading to palpitations or irregular heartbeat.
  • Swelling: In rare cases, diltiazem can cause severe swelling in the hands, feet, or ankles. This may indicate a serious allergic reaction.
  • Shortness of breath: If you experience sudden shortness of breath while taking diltiazem, it could be a sign of a severe reaction. Seek immediate medical help.

Monitoring and Reporting Side Effects

It is crucial to monitor your symptoms while taking diltiazem and report any side effects to your healthcare provider. Keeping track of how you feel can help your doctor adjust your medication or provide additional support if needed. Remember, always consult a healthcare professional before making any changes to your treatment plan.

The Efficacy of Diltiazem in Treating High Blood Pressure

Diltiazem, a calcium channel blocker, has been shown to be an effective medication in managing high blood pressure. Clinical studies have demonstrated the beneficial effects of diltiazem in reducing blood pressure levels in patients with hypertension. According to a study published in the Journal of Hypertension, diltiazem was found to significantly lower systolic blood pressure by an average of 10 mmHg and diastolic blood pressure by 6 mmHg in hypertensive individuals over a 12-week period. These findings highlight the efficacy of diltiazem as an antihypertensive agent.
Moreover, diltiazem has also been shown to have additional benefits beyond just lowering blood pressure. A meta-analysis conducted by the American Heart Association concluded that diltiazem was associated with a reduced risk of cardiovascular events, such as heart attacks and strokes, in patients with hypertension. This suggests that diltiazem may provide cardiovascular protection in addition to its antihypertensive effects.
In terms of safety and tolerability, diltiazem is generally well-tolerated by most patients. Common side effects include dizziness, headache, and constipation, but these are usually mild and transient. Serious adverse effects such as allergic reactions or heart rhythm disturbances are rare but can occur in some individuals. It is important for patients to consult with their healthcare provider before starting diltiazem therapy to ensure that the medication is appropriate for their condition.
Overall, diltiazem is a valuable option for the treatment of high blood pressure, with proven efficacy in reducing blood pressure levels and potentially offering cardiovascular benefits to patients. By working with their healthcare provider to monitor their blood pressure and make necessary lifestyle changes, individuals can effectively manage their hypertension with the help of diltiazem. To learn more about diltiazem and its use in treating high blood pressure, visit the American College of Cardiology’s website: American College of Cardiology.