Calnif Retard Tablet 10

Cadila Pharmaceuticals Ltd

Strip of 10 Units

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MRP ~~₹23.2~~

₹18.56

₹2.32/Units

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Prescription required for this medicine

Store Below 30^o C

Composition

Nifedipine (20 Mg)

Strength:

20 MG 10 MG

Calnif Retard Tablet 10 is used to manage hypertension in adults and is also effective in treating chest pain (angina pectoris). It helps improve blood flow and oxygen delivery to the heart, reducing the frequency and severity of angina episodes, especially during physical exertion or stress.

Consult your doctor for the correct dosage and frequency of this medicine. Inform your doctor about any pre-existing conditions or ongoing medications. If you experience any side effects, notify your doctor immediately and continue taking the medicine as prescribed for optimal results.

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Calnif Retard Tablet 10 is used to manage the following health conditions:

High blood pressure or hypertension
Angina pectoris: A type of chest pain caused by reduced blood flow to the heart

When taking Calnif Retard Tablet 10, follow these instructions:

Swallow the tablet whole with a glass of water.
Do not chew, break or crush the tablet.
Do not stop taking this medicine without consulting your doctor.
If you have any questions about how to take this medicine, consult your doctor.

Calnif Retard Tablet 10 is taken orally.

Calnif Retard Tablet 10 may cause the following common side effects:

Headache
Constipation
Swelling in legs and ankles

Managing the Side Effects:

Most side effects are temporary and generally harmless, and resolve upon discontinuing the use of Calnif Retard Tablet 10. However, if you experience any serious side effects or worsening of any of the symptoms, please consult your doctor. Here are some general guidelines for managing common side effects:

Headache: Take this medicine after food to reduce chances; stay hydrated, avoid alcohol.
Constipation: Eat high-fibre foods (fruits, vegetables), drink plenty of water.

Calnif Retard Tablet 10 contains nifedipine (20 mg), which works on your body in the following manner:

Nifedipine blocks the influx of calcium ions into the cells of your heart and blood vessels. By blocking these calcium ions, nifedipine causes the blood vessels to relax and widen. This reduction in resistance helps lower your arterial blood pressure. The relaxing and widening of the blood vessels also improves blood flow, which increases oxygen supply to your heart.

Pregnancy

While the use of Calnif Retard Tablet 10 during pregnancy should be guided by the benefits versus potential risks, it is best to consult your doctor before taking this medicine if you are pregnant.

Breastfeeding

Caution is advised while taking this medicine if you are breastfeeding. It is best to consult your doctor before taking this medicine.

Alcohol

Alcohol may enhance the blood pressure-lowering effect of this medicine, which could lead to dizziness or fainting. It's advisable to limit alcohol consumption while taking this medication.

Liver

Patients with liver disease should exercise caution when using this medicine, as it could amplify its effects and side effects due to slower metabolism. It is advised to discuss any liver-related concerns with your doctor before starting this medication.

Kidney

Do not take this tablet if you are on kidney dialysis. Consult your doctor before taking Calnif Retard Tablet 10.

Using Machines & Driving

Dizziness and fatigue are common side effects of this medicine which may affect your ability to drive or operate machinery. If you experience such effects, avoid driving or operating heavy machinery until you feel alert again.

Allergy

Do not take this medicine if you're allergic to nifedipine or any of its other components. If you have a history of medicine allergies, make sure to discuss this with your doctor before starting this medication.

Children

Calnif Retard Tablet 10 is not recommended for children below 18 years. Consult your doctor before giving any medicine to a child.

Older Patients

Older patients may have increased sensitivity to the effects of this medicine, particularly low blood pressure. If you are over 70 years of age, take this medicine under medical supervision as you may also have liver and kidney issues or be on other medication. Your doctor will guide you based on your health status.

Drug-Drug Interactions

Calnif Retard Tablet 10 interacts with the following medicines:

Antifungals: Medications like ketoconazole can lead to increased levels of Calnif Retard Tablet 10 in the bloodstream.
Anticonvulsants: Medicines such as phenytoin increase the metabolism of nifedipine, potentially reducing its effects.
Other Antihypertensive Medicines: When taken with Calnif Retard Tablet 10, medications like amlodipine or lisinopril can further decrease blood pressure.

Drug-Food Interactions

Calnif Retard Tablet 10 interacts with the following foods:

Grapefruit and grapefruit juice: Avoid grapefruit and grapefruit juice, it can significantly increase serum levels of nifedipine and may cause toxicity.

Drug-Disease Interactions

Calnif Retard Tablet 10 interacts with the following diseases:

Diabetes: The diabetes treatment may need to be adjusted if you are taking this medicine.
Heart Failure: Caution is advised when giving this medicine to patients with heart failure, as it may worsen the condition.

Daily Dose

Take the daily dose of Calnif Retard Tablet 10 as advised by your doctor. This advice will consider your specific condition and how well you're responding to the medication. Remember, it's essential never to alter your dosage without checking with your doctor first.

Over Dose

If you accidentally consume more this medicine than recommended, you might experience symptoms like excessive tiredness, feeling dizzy, or having a headache. If these symptoms persist or worsen, inform your doctor promptly.

Missed Dose

In case you forget to take a dose of Calnif Retard Tablet 10, take it as soon as you remember. However, if your next dose is due soon, skip the missed dose and continue with your regular schedule. Never increase the dosage without consulting your doctor.

Keep your this medicine in a cool, dry place, ideally at room temperature below 30°C.
Protect the medicine from light and moisture.
Make sure to keep this medicine out of reach of children.
Always check the expiry date before use and do not use if it has passed.

If you're using Calnif Retard Tablet 10 to manage high blood pressure, try cutting down on salt in your diet. Consuming less salt can help lower blood pressure.
For those dealing with chest pain or angina, engage in regular, moderate exercise as advised by your doctor. This can help improve your heart health.

Fact Box

Available Dosage Types	Tablet Er
Habit Forming	No
Ailment	Hypertension, Angina Pectoris
Drug Category	Calcium Channel Blocker
Therapeutic Category	Antihypertensive

What is Calnif Retard Tablet 10 used for?

Calnif Retard Tablet 10 is used to manage high blood pressure and angina pectoris, a type of chest pain caused by reduced blood flow to the heart.

How does Calnif Retard Tablet 10 work?

It contains nifedipine, which blocks calcium ions from entering heart and artery cells. This relaxes and widens your blood vessels, reducing blood pressure.

What are some side effects of Calnif Retard Tablet 10?

Common side effects include headache, flushing, dizziness, fatigue, nausea, constipation, and swelling of ankles or feet. Consult your doctor if they persist.

Is it safe to use Calnif Retard Tablet 10 during pregnancy?

Calnif Retard Tablet 10 should only be used during pregnancy if the potential benefit justifies the potential risk to the baby. Always consult your doctor first.

Can I take other medicines while on Calnif Retard Tablet 10?

Some medicines can affect how nifedipine works. Always consult your doctor before starting any new medicine while you're taking Calnif Retard Tablet 10.

Can I stop taking Calnif Retard Tablet 10 abruptly?

No, suddenly stopping this medicine can worsen angina. Always consult your doctor before making any changes to how you take it.

Last Updated On 26 Nov. 2025 | 8:26AM (IST)

Certified Content

Written by

Dr. Nikhil Ambatkar

Medical Content Reviewer | 8 years

PhD (Biotechnology)

Reviewed by

Dr. Betina Chandolia

Lead Medical Content Reviewer | 10 years

BDS, MDS, PGCCL, PGDMH

Check out Editorial Policy

Manufacturer details

5V74+4P2, Jay Prakash Nagar, Goregaon, Mumbai, Maharashtra 400063

Country of origin: INDIA

Expiry on or after: May 2026

In case of any issues, contact us:

support@truemeds.in|09240250346

Address: 6th floor, Urmi Corporate Park Solaris, Saki Vihar Road, Andheri East, Mumbai 400071

References

Pfizer Inc. (2010). PROCARDIA XL® (nifedipine) Extended Release Tablets. https://www.accessdata.fda.gov/drugsatfda_docs/label/2010/019684s023lbl.pdf
Bayer HealthCare Pharmaceuticals Inc. (2010). ADALAT CC (nifedipine) Extended Release Tablets. https://www.accessdata.fda.gov/drugsatfda_docs/label/2011/020198s023lbl.pdf
DailyMed - NIFEDIPINE tablet, extended release. (n.d.). https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=63f062f6-5669-434c-8ded-9801d8486dbf
Nifedipine: Uses, interactions, mechanism of action | DrugBank Online. (n.d.). DrugBank. https://go.drugbank.com/drugs/DB01115
Nifedipine: MedlinePlus drug information. (n.d.). https://medlineplus.gov/druginfo/meds/a684028.html

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Disclaimer

We, at Truemeds make a diligent attempt to deliver accurate, expert- drafted and thoroughly reviewed medicine related information to our consumers. However, it should, by no means, be considered a substitute for prescription from a certified doctor or a trustworthy doctor-patient relationship. In fact we detest any form of self medication without expert advice. The sole purpose of the information on our portal is to educate our consumers, which helps improve the communication between a doctor and a patient. The information by no means is complete in its entirety and should not be used to diagnose or treat any medical condition. No amount of information can replace the experience and expertise of a doctor, therefore his/her advice always holds priority and should be followed appropriately.

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