Niferin SR 30mg Tablet
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Prescription Required
Overview
Niferin SR 30mg Tablet contains nifedipine 30mg in a sustained-release (SR) formulation, a dihydropyridine calcium channel blocker used to treat high blood pressure (hypertension). The sustained-release design releases the medicine at a controlled, constant rate over 24 hours rather than all at once.
Nifedipine works by blocking calcium channels in the smooth muscle of blood vessel walls, preventing calcium from entering these cells. This relaxes and widens the arteries, lowering blood pressure. The sustained-release formulation avoids the sharp peaks and troughs in blood level seen with immediate-release nifedipine, giving smoother 24-hour blood pressure control.
How it Works
Nifedipine selectively blocks L-type calcium channels in vascular smooth muscle, reducing calcium influx and causing the arteries to relax and widen. The sustained-release matrix in this tablet releases nifedipine gradually as it passes through the digestive tract, maintaining a steady blood level and smoother blood-pressure-lowering effect over 24 hours.
Directions for Use
Take Niferin SR 30mg Tablet once daily, at about the same time each day, with or without food. Swallow the tablet whole with a glass of water – do not crush, chew, or split it, as this would disrupt the sustained-release mechanism and could cause too much of the medicine to be released at once.
Dosage
The usual starting dose of Niferin SR 30mg Tablet is 30mg once daily, which your doctor may increase depending on your blood pressure response, typically up to a maximum of 90mg daily. Your doctor will determine the right dose for your condition.
Shelf Life
Use this product before the expiry date stated on the packaging. Do not use the medicine if the expiry date has passed.
Storage Instructions
Store below 30°C in a dry place, away from direct sunlight and out of reach of children.
Side Effects
- Dizziness or lightheadedness
- Swelling in the ankles or feet
- Headache
- Flushing (warmth or redness in face)
- Nausea
- Constipation
- Fatigue
Contraindications
- Known hypersensitivity to nifedipine or other dihydropyridine calcium channel blockers
- Cardiogenic shock
- Unstable angina or within one month of an acute heart attack (particularly for immediate-release forms)
- Significant aortic stenosis
- Severe hypotension
Drug / Food Interactions
- Grapefruit and grapefruit juice significantly increase nifedipine blood levels and should be avoided
- Beta-blockers may need careful monitoring when combined, as both can lower blood pressure and heart function
- Strong CYP3A4 inhibitors (e.g. ketoconazole, clarithromycin) can increase nifedipine levels and the risk of side effects
- Other antihypertensive medicines may enhance the blood-pressure-lowering effect, increasing the risk of hypotension
Quick Tips
- Swallow the tablet whole – never crush, chew, or split a sustained-release tablet
- Avoid grapefruit and grapefruit juice while taking this medicine
- Monitor your blood pressure regularly as advised by your doctor
- Report new or worsening ankle swelling, or a fast or irregular heartbeat, to your doctor
- Do not stop this medicine abruptly without medical advice
Frequently Asked Questions
What is Niferin SR 30mg Tablet used for?
Niferin SR 30mg Tablet is used to treat high blood pressure, and sometimes chronic stable angina, using a sustained-release formulation that provides steady, 24-hour blood pressure control from a single daily dose.
Why must I swallow this tablet whole?
The sustained-release formulation is designed to release nifedipine gradually over 24 hours. Crushing, chewing, or splitting the tablet can destroy this mechanism and cause too much medicine to be released at once, increasing the risk of side effects.
Can I drink grapefruit juice while taking this medicine?
No, grapefruit and grapefruit juice can significantly increase nifedipine blood levels, raising the risk of side effects such as low blood pressure, flushing, and headache. It is best to avoid them while on this medicine.
Why do my ankles swell since starting this medicine?
Ankle or foot swelling (peripheral oedema) is a well-recognised, dose-related side effect of calcium channel blockers like nifedipine, caused by their effect on blood vessels. Mention it to your doctor if it is bothersome or worsening.
Can I stop taking this medicine if my blood pressure normalises?
No, do not stop without consulting your doctor, as high blood pressure often has no symptoms and stopping suddenly can cause it to rise again.
What should I do if I miss a dose of Niferin SR 30mg Tablet?
Take the missed dose as soon as you remember, unless it is almost time for your next dose – in that case, skip the missed dose and continue your regular schedule. Do not double the dose.
Can I buy Niferin SR 30mg Tablet from DoctorOnCall?
Yes, Niferin SR 30mg Tablet is available through DoctorOnCall, a licensed online pharmacy serving our Malaysian and Singaporean customers. As this is a prescription medicine, you will need to complete an online consultation so a doctor can assess your suitability and issue a valid prescription before the order is processed. This ensures the medicine is appropriate for your condition and used under proper medical supervision, whether you are ordering from Malaysia or Singapore.
Is the medication provided by DoctorOnCall genuine and safe to use?
DoctorOnCall sources its medicines through appropriate licensed pharmacy supply channels for our Malaysian and Singaporean customers. All orders are dispensed and checked by a registered pharmacist before delivery. Always use Niferin SR 30mg Tablet according to your doctor’s instructions and the information provided with the product.
What payment methods does DoctorOnCall accept?
We accept payment via Online Banking, Credit Card, and e-Wallets (Boost, GrabPay) for our Malaysian and Singaporean customers, so you can choose whichever method is most convenient for you at checkout.
Does DoctorOnCall provide an installment payment plan for Niferin SR 30mg Tablet?
DoctorOnCall provides an installment payment plan for eligible Malaysian and Singaporean customers, where applicable. Available plans, eligibility, and terms can vary by market, so please contact DoctorOnCall Customer Service for the latest information on installment options for your order.
Is delivery free, and how much does shipping for Niferin SR 30mg Tablet cost?
Delivery charges may vary for our Malaysian and Singaporean customers depending on your delivery location and the applicable order terms at the time of purchase. For the most accurate and up-to-date delivery fee information, please contact DoctorOnCall Customer Service before placing your order.
How long does delivery take for Niferin SR 30mg Tablet?
Our Malaysian customers can generally expect delivery within 3-5 working days, while our Singaporean customers generally receive their orders within 5-7 working days. These are expected timeframes rather than guarantees, and actual delivery time may vary depending on your delivery location, order processing time, courier operations, and whether the order falls on a weekend or public holiday.
What is DoctorOnCall’s shipping, return, or cancellation policy for Niferin SR 30mg Tablet?
Shipping, return, and cancellation terms may vary for our Malaysian and Singaporean customers depending on the product and your order details. Please refer to DoctorOnCall’s Shipping & Delivery Policy and Return, Refund & Exchange Policy, or contact Customer Service, for the specific terms that apply to your order.
Ingredients / Active Ingredients
- Nifedipine 30mg (sustained-release)
Safety Advice
Pregnancy
This medicine should only be used during pregnancy if prescribed by a doctor after careful evaluation.
Breastfeeding
Limited data on excretion in breast milk. Consult a doctor before use.
Kidney
Generally safe, but caution may be required in some patients.
Liver
Use cautiously. Liver function monitoring may be required.
Alcohol
Caution is advised when consuming alcohol with this medicine.
Driving
Use caution while driving until you know how this medicine affects you.
Medical Review
