Epicatechin is a flavonoid found naturally in cocoa, green tea, and apples. When taken as a supplement, it boosts nitric oxide production. This helps widen blood vessels and support steady circulation. Many people use it before training to aid muscle recovery and sustain physical performance.
You can find it in capsule or powder form. A common timing is 30 to 60 minutes before exercise, or alongside a meal. Stick to the dose on the label unless your doctor says otherwise.
Be careful if you take blood thinners like warfarin. Epicatechin can also lower blood pressure on its own. Get medical clearance before using it if you are on heart medication or scheduled for surgery.