Beta-blockers used to control hypertension. These are actually not steroids but are performance-enhancing drugs. If you want to endure your muscle and would be kept for future reservoirs then go for beta blockers. Beta blockers work by blocking the effects of epinephrine, a hormone secreted by the adrenal glands that increases blood circulation. People who take beta blockers have a slower heart rate and more relaxed blood vessels, conditions that help reduce blood pressure. That why it is used to control hypertension.
But always do medical prescription before taking beta blockers.