Propranolol SR

Let’s talk about Propranolol SR. In my practice, it’s one of those foundational tools that never really left the toolkit, even with all the newer agents that have come along. We’re discussing the sustained-release formulation of propranolol hydrochloride. It’s not a dietary supplement; it’s a prescription medication, a non-selective beta-adrenergic receptor blocker. The “SR” is the critical part—it stands for Sustained Release, meaning the tablet is engineered to release the active drug slowly and continuously over about 24 hours.