Drug class
Calcium Channel Blockers: medications in this class
Blood pressure medications that relax blood vessel walls.
Overview
Calcium channel blockers reduce calcium entry into muscle cells in blood vessel walls and the heart. The dihydropyridines, amlodipine and nifedipine, act mainly on blood vessels and are first-line for high blood pressure; the non-dihydropyridines, diltiazem and verapamil, also slow the heart and are used for angina and to control the rate in atrial fibrillation.
Amlodipine is one of the most prescribed drugs in the country: once daily, long-acting, with few interactions. Ankle swelling is its characteristic side effect; flushing and headache are others. Diltiazem and verapamil can cause constipation and slow the heart too far, and they interact with several other medicines.
Amlodipine is also sold combined with an ARB (valsartan, olmesartan), with benazepril and with atorvastatin.
How the drugs in this class differ when you pay cash
Amlodipine tablets are a commodity generic and appear on nearly every flat-price list; the cash price is the dispensing fee. Nifedipine extended-release, diltiazem extended-release capsules and verapamil extended-release are generic but cost pharmacies more and vary in price by manufacturer and strength, so quotes differ more between pharmacies. Diltiazem in particular comes in several extended-release products that are not interchangeable at the counter.
Brand Norvasc is amlodipine at a higher price. The amlodipine combinations with an ARB are generic and worth quoting both ways.
Nifedipine is sold as immediate-release capsules, which are used rarely now, and as extended-release tablets, which are the usual prescription; the two are not interchangeable. Diltiazem extended-release products are named differently by manufacturer, and a pharmacy may need to confirm with the prescriber before substituting one for another, which can delay a fill.
When paying cash beats a copay, and when it does not
For amlodipine a cash quote is almost always at or below a copay. For the extended-release diltiazem and verapamil products, compare, because the spread between pharmacies is wide and insurance sometimes wins.
Conditions treated
- High Blood Pressure
- Angina
Medications
Which of these is right for a given person is a decision for the prescriber. The guides explain what each drug is, how it is supplied, and why its cash price varies between pharmacies. No page on this site shows a price; prices come from pharmacies responding to your actual prescription.
Questions worth asking
- What should I do about ankle swelling?
- If I take diltiazem or verapamil, which of my other medicines interact?
- Is this the exact extended-release product on my prescription?
- Is a ninety-day prescription appropriate?
- Can I take it with grapefruit?
How Script Unlock gets you a cash price for a Calcium Channel Blockers prescription
Prices on this site come from pharmacies responding to a real prescription. We do not publish estimated, average or "typical" prices, because none of those would be your price.
- 1You upload your prescription
A photo of your a Calcium Channel Blockers prescription prescription is enough. Nothing is sold on the site; you are asking pharmacies to quote.
- 2Licensed pharmacies respond
Pharmacies that Script Unlock has verified see the request and each can reply with its own cash price for your exact drug, strength and quantity.
- 3You choose and pay the pharmacy
You compare the responses, pick a pharmacy, and pay that pharmacy directly when you collect. Script Unlock never takes a patient payment and never sets the price.
Sources
- National Heart, Lung, and Blood Institute
- MedlinePlus drug information (National Library of Medicine)
- FDA Orange Book (approved generics and therapeutic equivalence)
Written by the Script Unlock editorial team from the sources above. Not yet reviewed by an independent pharmacist. Last checked 2026-10-03.
Script Unlock is a marketplace that lets licensed pharmacies quote a cash price on your prescription. It does not prescribe, dispense or sell medication, does not process patient payments, and does not give medical advice. Always follow the instructions of your prescriber and pharmacist and read the medication guide supplied with your medicine.