Calaptin 40 mg
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Calaptin 40 mg


Calaptin 40 mg is often used in the treatment of angina and high blood pressure. It contains Verapamil as an active ingredient.

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A tablet that is used to treat high blood pressure (hypertension) and angina (heart-related chest pain). In any case, healthcare providers may prescribe this medicine to treat arrhythmia and other conditions not listed in this document. While the active ingredient is Verapamil, it contains other inactive ingredients such as colloidal silicon dioxide, dibasic calcium phosphate, magnesium stearate, titanium dioxide, hypromellose, and others. Calaptin 40 mg belongs to a group of medicines called calcium channel blockers. It works by relaxing the blood vessels, which helps blood flow more easily. This effect helps to decrease blood pressure and strain on the heart.

The manufacturer of Calaptin 40 mg is Abbott Healthcare Pvt. Ltd.


The recommended dose is usually once daily in the morning or as directed by your healthcare professional. Administer the tablet whole by mouth with a glass of water preferably on an empty stomach. While swallowing, you should not split, chew, or break the pill because you may notice an unpleasant taste in your mouth. Moreover, avoid alcoholic drinks to administer this medicine because it may increase your risk of adverse effects. You can administer the tablet with low-fat food or milk if you experience nausea or stomach upset. To get the most benefit from Calaptin 40 mg, administer it at evenly spaced times.

Additionally, Verapamil will not treat your condition faster if you decide to use it more frequently than is prescribed by the doctor. In any case, your physician may gradually increase the dosage for several weeks if you do not notice the desired result.

Using the liquid form of Verapamil requires a special measuring device or spoon. Otherwise, you may get the wrong dose, which may also increase your risk of adverse effects. Immediately contact a doctor if your condition does not improve or if it worsens.


The dosages usually fluctuate among patients. It depends on the severity of your health condition, other drugs you may use, response to treatment, and age. Thus, physicians prescribe different dosages for their patients. Avoid using Calaptin 40 mg or consult a doctor if you have doubts about what dosage is better for you.

  • Calaptin 40 mg

Missed Dose

It is not advised to miss a dose because it may lead to a return of the symptoms. Hence, your disease may become worse or more difficult to treat. However, if you miss one, healthcare providers recommend administering the pill as soon as possible. Skip the missed dose, if it is time for the next dose. Do not take a double dose the next time trying to catch up because your risk of severe side effects may increase.


Rarely, if you are administering more tablets than are allowed, you may notice an overdose. Overdose symptoms include severe dizziness, slow or shallow breathing, fast or pounding heartbeat, passing out, and others. In case you notice any of the symptoms listed above, stop using this medicine and get medical help right away. Ask your healthcare provider if you have any questions.

Side Effects of Calaptin 40 mg

Calaptin 40 mg like other drugs may give you certain side effects during treatment. Overdose and allergy are some factors that can cause adverse effects. There are three types of side effects: mild, moderate, and severe.

Mild Side Effects

Commonly, most patients ignore this category of side effects but it is advised to tell your doctor if any of them appear. Check below some examples:

Moderate Side Effects

Patients usually can continue safely the treatment even if experience any of the following side effects. Moreover, your physician may help you to avoid or prevent side effects. For example:

  • Constipation
  • Dizziness
  • Tiredness
  • Lightheadedness

Severe Side Effects

In rare cases, you may notice this category of side effects usually due to an increased dose of Verapamil. Therefore, you should interrupt taking Calaptin 40 mg and consult a doctor at once if you experience any of the following negative effects. Check below some examples:

  • Hypotension (low blood pressure)
  • Swelling of the feet or ankles
  • Very slow heartbeat
  • Loss of appetite
  • Sudden weight gain
  • Extreme fatigue

Consult a doctor if you experience any of the adverse reactions listed above or both of them at the same time.

Drug Interaction

Verapamil may interact with some substances and medications and decrease the effectiveness of Calaptin 40 mg or increase your risk of adverse effects. Before taking this medicine, share with your doctor a list of products that you are using. For example herbal products, prescription medicines, over-the-counter medicines, supplements, vitamins, and others. Check below some examples:

  • Clonidine
  • Disopyramide
  • Dofetilide
  • Lithium
  • Aliskiren
  • Fingolimod
  • Rifampin
  • Erythromycin
  • Ritonavir
  • St. John’s Wort
  • Triazolam
  • Colchicine
  • Alcohol
  • Ivabradine
  • Naproxen
  • Ibuprofen
  • Lomitapide
  • Flibanserin
  • Midazolam
  • Fezolinetant
  • Elacestrant
  • Asunaprevir
  • Amlodipine
  • Benidipine
  • Amiodarone

Discuss with a healthcare professional before using this drug because this article does not contain a complete list of drug interactions. Furthermore, you should not stop, start, or change the dosages without the doctor’s approval because it may lead to unpleasant results.


Inform your physician if you are allergic to the ingredients of the drug or if you have any other allergies. Moreover, do not use this medicine if any of the following cases occur. For example:

  • Certain types of heart rhythm problems (such as sick sinus syndrome, Wolff-Parkinson-White syndrome, Lown-Ganong-Levine syndrome, and others)
  • Cancer
  • Surgery
  • Diabetes
  • Some muscle or nerve disorders (such as muscular dystrophy, myasthenia gravis, and others)
  • Liver or kidney disease
  • Heart disease (such as coronary artery disease, heart failure, and others)

Verapamil may make you sleepy or dizzy. Limit or avoid alcohol and marijuana (cannabis) while you are on treatment with Calaptin 40 mg because these effects may increase. Moreover, you should not drive or operate machinery during treatment until you can do it safely.


  • You may find certain differences between this article and the doctor’s prescription. Therefore, to treat your conditions fast and safely, it is advised to follow the physician’s recommendations only.
  • It is not allowed to use Calaptin 40 mg after its shelf life because it may cause severe side effects.
  • Do not share Verapamil with others, especially with children because it may be harmful to them.

Additional information

Active Ingredient



Abbott Healthcare Pvt. Ltd.


10 tabs/blister




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