Is nifedipine (calcium channel blocker) extended-release (ER) available in a liquid formulation?

Nifedipine ER Liquid Formulation Availability

No, nifedipine extended-release (ER) is not available in a liquid formulation and must be swallowed whole as an intact tablet. 1

Formulation Requirements

• Extended-release nifedipine tablets must be swallowed whole and cannot be crushed, split, or dissolved, as this would destroy the controlled-release mechanism and potentially cause dangerous rapid drug release 1

• The ER formulation relies on specific tablet technology (such as the GITS system) to provide gradual, sustained drug delivery over 24 hours, which cannot be replicated in liquid form 2, 3, 4

Alternative Formulations for Patients Unable to Swallow Tablets

If a patient cannot swallow extended-release tablets, consider these alternatives:

• Immediate-release nifedipine can be used, though it requires more frequent dosing (typically TID-QID) and has a less favorable side effect profile with more reflex tachycardia 2, 5

• Other calcium channel blockers like amlodipine or isradipine can be compounded into stable extemporaneous liquid suspensions 1

• Amlodipine is specifically noted as being able to be compounded into stable suspensions and offers once-daily dosing 1

Critical Safety Consideration

• Immediate-release nifedipine should not be used without concomitant beta-blockade in patients with cardiovascular disease due to increased risk of adverse cardiovascular events 6, 7

• The short-acting capsule formulation of nifedipine should no longer be prescribed due to safety concerns 8