Review on 💪 Boost Nitric Oxide Levels with Ultra High Strength Beet Root Capsules - 4% Nitrates - 1400mg - Natural NO Booster - Highly Concentrated & Bioavailable - 120 Capsules by Susan King

They're not kidding when they say this beet supplement has the highest nitrate content, but it might not be great. After taking 2 pills I felt like I was going to have a heart attack, it was too intense. However, I take another supplement called Beet Elite and don't feel as bad as this one and it really helps increase my nitric oxide levels to feel more oxygen during exercise. This supplement only seems to increase heart rate, but I don't know if it's very helpful. YMMV but they just made me sick and didn't boost my workout.