Anti-anginalPrescription only
Ranolazine
Extended-release tablet
Quick Summary
Ranolazine improves how heart muscle uses energy.
Chronic angina
Medical Uses
Chronic angina: Add-on treatment.
How it's taken
Swallow tablets whole, twice daily.
Your doctor decides the right dose for you and how long to take it.
Your doctor decides the right dose for you. Follow their instructions and the label.
Common Side Effects
Dizziness
Sometimes.
Constipation
Common.
Nausea
Sometimes.
Interactions
Some antifungals and antibiotics
Raise levels.
Digoxin and simvastatin
Levels rise.
Critical Warnings
Heart rhythm
Can affect rhythm.
Kidney problems
Monitoring needed.
Sources and further reading
Last updated 21 October 2026. For more detail, see these trusted health organisations.
- Ranolazine: drug information(opens in a new tab) · MedlinePlus, US National Library of Medicine