Calan
Verapamil film-coated tablets from 40mg to 240mg, used in the management of hypertension, angina pectoris and supraventricular tachycardia.
- Category
- Heart & Blood Pressure
- Active ingredient
- Verapamil
- Route
- Oral use
- Form
- Film-coated tablet
- Strengths
- 40 · 80 · 120 · 240mg
You will receive a quality generic equivalent, depending on stock.
No prescription needed: we place your order for Calan on your behalf.
- Conditions
- Hypertension · Angina Pectoris · Supraventricular Tachycardia
- Alternative names
- Cordilox; Securon
- Therapeutic class
- Calcium Channel Blocker
- Pharmacological class
- Phenylalkylamine Calcium Channel Blocker
- Known off-label uses
- cluster headache
- Precautions and warnings
- inform your doctor before any planned surgery; may cause or worsen constipation
- Minor side effects
- constipation; dizziness; nausea
- Moderate side effects
- peripheral oedema; flushing; hypotension
- Dosage forms
- Film-coated tablet
- Administration route
- Oral use
- Originator
- Pfizer
- Onset Time
- 1–2 hours
- Duration
- 6–8 hours
- Storage instructions
- Store below 25°C, keep the container tightly closed.
- Drug interactions
- grapefruit; digoxin; beta-blockers
- Age restrictions
- Dosage adaptation may be required for elderly patients.
Contraindications
hypersensitivity to verapamil; severe left ventricular dysfunction; cardiogenic shock; sick sinus syndrome
Serious side effects
atrial fibrillation, requires immediate medical attention; liver function abnormalities, requires immediate medical attention
Patient summary
Verapamil film-coated tablets from 40mg to 240mg, used in the management of hypertension, angina pectoris and supraventricular tachycardia.
Mechanism of action
This medication functions by inhibiting the movement of calcium ions into heart and smooth muscle cells. This action causes relaxation of arterial blood vessels and reduces the contractility of the heart, effectively lowering blood pressure and improving oxygen supply to the heart.
Pregnancy and breastfeeding
Pregnancy: Consult a specialist before use. Breastfeeding: Verapamil is present in human milk; discuss usage with a physician.
Calan is a well-known brand of Verapamil, a medication used for hypertension, angina pectoris and supraventricular tachycardia. Other popular versions of this ingredient include Cordilox and Securon. Pfizer supplies these in tablet form, available in strengths of 40, 80, 120 and 240mg for those requiring consistent cardiovascular support.
Buying Calan online
For expats and residents across the region, ordering generic Verapamil online offers an affordable alternative to the original brand, providing reliable access to maintenance therapy.
Is Calan from SGMeds the original brand?
No. SGMeds ships a generic with the same active ingredient (verapamil) at the strength you choose, not the original Calan made by Pfizer. We use the brand name so you can find the medicine, and the generic's manufacturer varies with stock.
How is Calan priced?
Calan comes in 40, 80, 120 and 240mg strengths, in packs of 30 to 360 tablets. Each option's price is shown on this page in Singapore dollars, converted from US dollars, so the exchange rate can change the final amount. Larger packs work out cheaper per tablet.
Payment and prices →What other brands contain the same active ingredient as Calan?
Other brand names for verapamil include Cordilox and Securon. SGMeds also lists Isoptin, Verampil, Isoptin SR and Arpamyl with the same active ingredient.
What is Calan used for?
Calan is used for high blood pressure (hypertension), angina pectoris and supraventricular tachycardia.
What side effects does Calan have?
The most common side effects of verapamil are constipation, dizziness and nausea. Less common ones are swelling of the legs or ankles (peripheral oedema), flushing and low blood pressure (hypotension). Serious side effects include atrial fibrillation and liver function abnormalities. Get medical help straight away if you notice one of these serious effects.
What does Calan interact with?
Verapamil can interact with grapefruit, digoxin and beta-blockers. Before you start Calan, tell your doctor or pharmacist about any medicines, supplements or herbal remedies you take.
When does Calan start to work?
Calan usually starts to work within 1 to 2 hours. This varies from person to person.
Can I order Calan without a prescription?
Yes. SGMeds does not ask for a prescription to order Calan: we place the order with our pharmacy partner, which prepares it and arranges delivery on your behalf.
Ordering without a prescription →Can I buy Calan online in Singapore?
Yes, here on SGMeds: choose the strength and pack, then check out. We deliver to Singapore and Malaysia. Express shipping is tracked and takes up to 1 week, and Regular shipping takes up to 3 weeks.
How ordering works →What you will receive
Calan is the originator brand name, made by Pfizer. We use it here to identify the medicine only; we are not affiliated with Pfizer and do not ship the original Calan.
- You receive a generic equivalent: the same active ingredient (Verapamil) at the same dose, mostly recognised Indian branded generics from vetted manufacturers.
- The exact brand supplied depends on what is in stock at the dispatching warehouse.
- A regulated generic matches the original ingredient for ingredient by legal standard.