Gosh, I'm really sorry to hear about your son's blood pressure issues to begin with. He's a young man. We have familial hypertension in my family. I'm prone to it. Mine is directly connected to my weight. I gain weight, my bp goes up. Not great as I'm an emotional eater. So, it's a battle. That is awesome that he is so good about working out and doing cardio (most important for the heart). Was he always or did it increase with the BP concerns? He's seen a cardiologist? Or is this is primary care doctor prescribing this? If it were my 27 year old son, I'd want him to see a cardiologist. Because this will clearly be a life long battle for him. Now that he is on the medication, is his blood pressure stable, controlled and lower? Does he still have the facial flushing? Each class of blood pressure medication is a little different. This article goes through all the different options of types of medications. https://www.mayoclinic.org/diseases-conditions/high-blood-pressure/in-depth/high-blood-pressure-medication/art-20046280 He is currently prescribed a beta blocker, correct? https://www.medicinenet.com/beta-blockers_vs_calcium_channel_blockers/article.htm#what_are_the_different_types_of_beta_blockers_and_calcium_channel_blockers I think all of these drugs have side effects and the risk to benefit ration has to be applied. Beta blockers slow adrenaline. Beta blockers are also commonly given for facial flushing. So, I'm sure that is why they chose the med. Is your son having any side effects from taking it?