Pill Imprint 3M SR 300
This white elliptical / oval pill with imprint 3M SR 300 on it has been identified as: Theolair-sr 300 MG.
This medicine is known as Theolair-SR (generic name: theophylline). It is available as a prescription only medicine and is commonly used for Apnea of Prematurity, Asthma, acute, Asthma, Maintenance.