Securon SR is a brand name for the medication verapamil hydrochloride, which is primarily used in the treatment of various cardiovascular conditions. It belongs to a class of drugs known as calcium channel blockers, which work by relaxing the muscles of the heart and blood vessels. This action helps to lower blood pressure, reduce chest pain (angina), and regulate heart rhythms. Securon SR is formulated as a sustained-release (SR) tablet, allowing for a gradual release of the medication into the bloodstream over time, which helps in maintaining a consistent level of the drug in the body. It is commonly prescribed for conditions such as hypertension (high blood pressure), angina pectoris, and certain types of arrhythmias. Patients are advised to follow their healthcare provider's instructions closely when taking Securon SR, as the dosage and treatment regimen can vary based on individual health needs and response to the medication.