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Isradipine: uses, dosing, side effects & brands

Isradipine is a medicine sold in the U.S. under 2 brand and generic names. Below: what the FDA label says, every product that contains it, what the pills look like, and its recall record.

By the pharmaranks editorial teamReviewed against the FDA (openFDA label, NDC Directory & Enforcement) sourcesUpdated Jul 24, 2026How we research

Key facts

Available as
Tablet, extended release · Capsule
Sold as
2 products — Dynacirc CR and Dynacirc
Prescription?
Prescription only
Generic available?
Not in our catalog
What the pharmacy pays
about $50 for a 30-count supply — not your price

Every isradipine product we track (2)

Same active ingredient — different manufacturer, form, price and FDA recall record. That last one is what our independent score measures.

Isradipine products
#DrugRatingPharmacy pays
172/100$50View →
2Not yet rated$50View →

What isradipine pills look like

Imprint codes, colour and shape from the FDA’s labelling data. Match the imprint on your pill — or search any imprint.

Isradipine pill imprints
ImprintStrengthColourShape
IS;2;52.5 mgbrowncapsule
IS;55 mgbrowncapsule
IS;2;52.5 mgbrowncapsule
A2632.5 mgwhitecapsule
A2645 mgbrowncapsule
IS;55 mgbrowncapsule

How long isradipine keeps

No isradipine label we read sets a separate limit for after opening, but they do specify how it must be stored — and the stability behind any date assumes those conditions.

What people report to the FDA about isradipine

The FDA Adverse Event Reporting System (FAERS) collects reports from patients and clinicians. It holds 606 reports naming isradipine, and the FDA flagged 82% of those reports as serious. The effects reported most often — leaving out reports about overdose, misuse or the condition being treated, which dominate the raw list for common medicines:

  • hypertension34 reports
  • dyspnoea32 reports
  • nausea29 reports
  • acute kidney injury26 reports
  • asthenia25 reports
  • renal failure24 reports
  • diarrhoea23 reports
  • hypotension22 reports

Read these as a signal, not a rate. A report does not mean isradipine caused the effect — anyone can file one, and many describe people taking several medicines for several conditions. Crucially there is no denominator: FAERS does not record how many people took the drug, so these counts cannot be turned into “X% of patients” — a bigger number often just means a more widely used or more talked-about drug. Duplicates exist, and publicity drives reporting. For what is actually established, read the FDA label.

Source: openFDA drug/event (FAERS), retrieved September 25, 2026.

Related calculators

Frequently asked questions

Can you take isradipine with other medicines?

It depends on the medicine. We check it against the FDA labels rather than guessing: our interaction checker searches each drug's own label for the other and quotes what it says, naming the section it came from. Run isradipine against whatever else you take — and remember that a label not naming a drug is not the same as that combination being safe.

What brand names is isradipine sold under?

We track 2 isradipine-containing products in the U.S.: Dynacirc CR and Dynacirc. They are the same active ingredient; they differ in form, manufacturer, price and FDA recall record.

What forms does isradipine come in?

Across the brands we track, isradipine is currently marketed as tablet, extended release and capsule, per the FDA's National Drug Code Directory. Each form is dosed differently — follow the label for the exact product you were prescribed.

Is there a generic isradipine?

We do not currently list a generic-labelled isradipine product. That does not always mean none exists — it means none appears under a generic name in the FDA data we track. Ask your pharmacist.

Cite this page
APA
pharmaranks. (2026, July 24). Isradipine: uses, dosing, side effects & brands. https://pharmaranks.com/drugs/isradipine
MLA
“Isradipine: uses, dosing, side effects & brands.” pharmaranks, 24 July 2026, https://pharmaranks.com/drugs/isradipine.

We summarise public FDA and NIH sources — for a clinical claim, cite the primary source we link to as well.

Sources: FDA openFDA drug label, National Drug Code Directory, and Enforcement (recall) database. This page reproduces public FDA data and is not medical advice. Dosing is set by your prescriber.

Read the full FDA label for isradipine on DailyMed (NIH) ↗.