Patient: Hi! I’m Dion, 25years of age! I just want to find out if its safe and effective to use purblok 10mg for a fitness test. I’m a fit guy but sometimes my heart rate shoots up out of no where, which makes me scared I might fail my fitness test. So I basically want to find out if purblok 10 mg will help keep my heart rate low during the fitness test and if its safe to use it.