Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Felodipine ER (Plendil) and isradipine (Dynacirc) are both calcium channel blockers used to treat high blood pressure. Felodipine ER is typically taken once daily as a tablet, while isradipine is usually taken twice daily as a capsule. Felodipine ER is available as a lower-cost generic, but the brand name Plendil has been discontinued. Similarly, the brand name Dynacirc for isradipine is no longer available, but the generic form is still on the market. Common side effects for both medications include swelling, headache, and dizziness. Both medications can be taken with or without food, but it's important to be consistent with how you take it. Both medications require careful monitoring of blood pressure and have specific instructions regarding missed doses and potential interactions with other medications.
Felodipine er (Plendil)
Isradipine
Felodipine er (Plendil)
Isradipine
Summary of Plendil vs. Dynacirc
Summary for Calcium channel blocker (CCB)
Prescription only
Felodipine ER (Plendil) is a calcium channel blocker. It lowers blood pressure by relaxing your blood vessels. This medication is one of the first-choice options for treating high blood pressure in adults. It's taken by mouth, typically once daily. Some side effects of this medication include swelling, headache, and flushing. Brand name Plendil has been discontinued.
Summary for Calcium channel blocker (CCB)
Prescription only
Isradipine is used to lower blood pressure. The long-acting version and the brand name version of isradipine have been discontinued. But the generic is still available as a capsule that's taken by mouth, typically twice daily. Like all calcium channel blockers, some common side effects of isradipine include swelling, dizziness, and headache.