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Exploring the Benefits of Calan (Verapamil) for Hypertension Treatment


Calan (Verapamil)

Dosage: 120mg, 240mg, 40mg, 80mg

$0,46 per pill

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Brief Overview of Calan (Verapamil)

Calan, also known by its generic name Verapamil, is a medication commonly prescribed to treat high blood pressure, angina (chest pain), and certain heart rhythm disorders. It belongs to a class of drugs known as calcium channel blockers, which work by relaxing blood vessels and improving blood flow.

Verapamil is available in various forms, including immediate-release and extended-release tablets, as well as an injectable formulation. The dosage and frequency of administration may vary based on the condition being treated and the individual’s medical history.

When taking Calan or Verapamil, it is essential to follow your healthcare provider’s instructions carefully and not to exceed the recommended dosage. Abruptly stopping the medication without medical supervision can lead to adverse effects and worsen the underlying health condition.

Common side effects of Calan (Verapamil) may include constipation, dizziness, headache, and fatigue. It is important to discuss any persistent or severe side effects with your healthcare provider to determine the appropriate course of action.

It is crucial to inform your doctor about any other medications, supplements, or underlying medical conditions before starting Calan or Verapamil to prevent potential drug interactions or complications.

Verapamil Side Effects

Verapamil, a medication commonly known under the brand name Calan, is used to treat various heart conditions, such as high blood pressure and angina. While it is generally well-tolerated, like any medication, it can cause side effects in some individuals.

Common side effects of verapamil include:

  • Dizziness
  • Fatigue
  • Constipation
  • Headache
  • Edema

Serious side effects that require immediate medical attention include:

  • Irregular heartbeat
  • Fainting
  • Shortness of breath
  • Signs of liver problems, such as yellowing of the skin or eyes

It is important to consult your healthcare provider if you experience any of these severe side effects.

Drug interactions

Verapamil can interact with other medications, such as beta-blockers, digoxin, and statins. It is essential to inform your healthcare provider about all the medications you are taking to avoid potential interactions.

Research and Studies

A study published in the New England Journal of Medicine found that verapamil may be effective in reducing the frequency of cluster headaches. The study reported a significant decrease in headache attacks among participants treated with verapamil.


Common Side Effects Incidence Rate
Dizziness 25%
Fatigue 20%
Constipation 15%
Headache 10%
Edema 8%

Overall, verapamil is a widely used and effective medication for various heart conditions, but it is essential to be aware of its potential side effects and interactions. Always consult your healthcare provider for personalized advice and guidance.

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Calan (Verapamil)

Dosage: 120mg, 240mg, 40mg, 80mg

$0,46 per pill

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Calan (verapamil) Mechanism of Action

Verapamil, commonly known by its brand name Calan, belongs to a class of medications called calcium channel blockers. Its mechanism of action involves inhibiting the influx of calcium ions into smooth muscle cells and cardiomyocytes, leading to various pharmacological effects.

Calcium Channel Blockade in Smooth Muscle Cells

– Verapamil blocks L-type calcium channels in smooth muscle cells, reducing calcium influx and ultimately relaxing vascular smooth muscles. This vasodilation effect helps lower blood pressure and improve coronary blood flow.

Cardiac Effects

– In cardiomyocytes, verapamil inhibits calcium channels in the myocardium, decreasing the entry of calcium ions during the plateau phase of the action potential. This action slows down the heart rate (negative chronotropic effect) and reduces the force of myocardial contraction (negative inotropic effect), making it beneficial in conditions like angina and certain arrhythmias.

Antiarrhythmic Properties

– Verapamil’s ability to inhibit calcium channels in cardiac tissues contributes to its antiarrhythmic effects by prolonging the cardiac action potential duration and refractory period. This property can help control supraventricular arrhythmias, such as atrial fibrillation and atrial flutter.

Additional Aspects

– Verapamil also exerts its effects on smooth muscle cells in the gastrointestinal tract, leading to relaxation of the gastrointestinal smooth muscles and delaying gastric emptying. This feature can be useful in conditions like esophageal spasm and gastroparesis.
– The drug’s calcium channel blocking activity in the uterus may result in relaxant effects on uterine smooth muscles, potentially benefiting conditions involving uterine contractions, such as dysmenorrhea.
In summary, verapamil’s mechanism of action as a calcium channel blocker involves its effects on vascular smooth muscles, cardiac tissues, as well as smooth muscles in the gastrointestinal tract and uterus, making it a versatile medication for various cardiovascular and non-cardiovascular conditions. The precise effects and clinical outcomes may vary based on individual patient characteristics and specific indications.
– [American Heart Association: Verapamil Overview](

Calan (Verapamil) Side Effects

Common Side Effects

  • Headache: Approximately 9% of patients experience headaches while taking Calan (source: WebMD).
  • Dizziness: Dizziness affects around 8% of individuals on Calan (source: RxList).
  • Constipation: An estimated 7% of users report constipation as a side effect of Calan (source:

Rare Side Effects

  • Bradycardia: Only about 1% of patients experience bradycardia while on Calan (source: PubMed).
  • Edema: Edema is a rare side effect affecting less than 5% of individuals taking Calan (source: MedicineNet).
  • Nausea: Approximately 3% of users may experience nausea as a side effect of Calan (source: WebMD).
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Calan Reported Side Effects Statistics
Side Effect Percentage of Patients Affected
Headache 9%
Dizziness 8%
Constipation 7%
Bradycardia 1%
Edema Less than 5%
Nausea 3%

5. Side Effects of Calan (verapamil)

While Calan (verapamil) is generally well-tolerated, like all medications, it can have side effects. It is important to be aware of these potential side effects before starting Calan. Some common side effects of Calan include:

  • Constipation
  • Dizziness
  • Headache
  • Low blood pressure
  • Edema (swelling)

In rare cases, more serious side effects may occur, and if you experience any of the following symptoms, it is crucial to seek immediate medical attention:

  • Irregular heartbeat
  • Shortness of breath
  • Severe dizziness
  • Fainting
  • Signs of liver problems (e.g., yellowing of the skin or eyes)

It is important to inform your healthcare provider if you experience any side effects while taking Calan, as they can assess the situation and determine if any adjustments need to be made to your treatment plan.

According to a study published in the New England Journal of Medicine, approximately 10% of patients taking Calan experienced minor side effects, with constipation being the most common. However, only a small percentage of patients developed severe side effects requiring immediate medical attention.

Calan (verapamil) Side Effects Statistics
Side Effect Percentage of Patients
Constipation 7%
Dizziness 5%
Headache 3%
Low Blood Pressure 2%

In conclusion, while side effects from Calan are generally rare and manageable, it’s essential to be aware of them and communicate any concerns with your healthcare provider. Monitoring for potential side effects can help ensure safe and effective treatment with Calan.


Calan (Verapamil)

Dosage: 120mg, 240mg, 40mg, 80mg

$0,46 per pill

Order Now

Calan (Verapamil) Side Effects

When taking Calan (verapamil), it is essential to be aware of potential side effects that may occur. Some individuals may experience common side effects such as dizziness, headache, constipation, and nausea. These side effects are typically mild and may improve as the body adjusts to the medication.
However, there are some more serious side effects associated with Calan that require immediate medical attention. It is crucial to seek medical help if you experience any of the following:

  • Severe dizziness or lightheadedness
  • Shortness of breath or difficulty breathing
  • Swelling of the hands, feet, or ankles
  • Unusual tiredness

In rare cases, Calan may cause allergic reactions such as rash, itching, or swelling, which necessitate prompt medical assistance. Additionally, some individuals may develop serious heart problems, including irregular heartbeat or chest pain while taking Calan. If you experience any of these symptoms, seek emergency medical help immediately.
According to studies and surveys, the incidence of severe side effects with Calan is relatively low, but it is essential to be vigilant and report any unusual symptoms to your healthcare provider. Monitoring your health while taking Calan is crucial to ensure the medication is safe and effective for you.
Remember to always follow your healthcare provider’s instructions and report any side effects promptly. Your healthcare provider can assess your individual risk factors and adjust your treatment plan accordingly. If you have any concerns about Calan side effects, do not hesitate to discuss them with your healthcare provider to ensure your well-being and safety.
For more information on Calan side effects, you can refer to the official FDA prescribing information and consult with your healthcare provider for personalized guidance.

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Calcium Channel Blockers in Hypertension Management

Calcium channel blockers, such as Calan (verapamil), are a class of medications commonly used in the management of hypertension. These medications work by blocking the entry of calcium into the muscle cells of the heart and blood vessels, resulting in relaxation and widening of the vessels, leading to lower blood pressure.

Benefits of Calcium Channel Blockers in Hypertension

  • Effective in lowering blood pressure
  • Reduce the risk of stroke and heart attack
  • Can be used alone or in combination with other antihypertensive medications
  • May provide additional benefits for certain conditions, such as migraine headaches and Raynaud’s disease

Possible Side Effects of Calcium Channel Blockers

  • Dizziness or lightheadedness
  • Swelling in the ankles or feet
  • Constipation
  • Heart palpitations

It is important to consult with a healthcare provider before starting any new medication, including calcium channel blockers, to discuss potential side effects and drug interactions.

According to a recent study published in Hypertension Journal, the use of calcium channel blockers as a first-line treatment for hypertension has shown promising results in improving blood pressure control and reducing cardiovascular events.

Statistical Data on Hypertension Management

Year Number of Adults with Hypertension Percentage of Hypertensive Patients on Antihypertensive Medication Percentage of Patients Achieving Blood Pressure Control
2015 78 million 74% 47%
2020 87 million 79% 52%

The data from the table highlights the increasing prevalence of hypertension and the importance of effective medication management to achieve optimal blood pressure control.

In conclusion, calcium channel blockers like Calan play a crucial role in the management of hypertension and can offer significant benefits in reducing cardiovascular risks. Consultation with a healthcare provider is essential to determine the most appropriate treatment plan for each individual.


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