Hi,

Nitric oxide tells blood vessels to relax and widen, allowing more oxygen-rich blood to reach working muscles. SwissRX Nitric Oxide has been one of the most trusted ways to support that system, and for good reason: It works. A lot of athletes (Matt included) have made it a permanent part of their routine.

Berkeley Life Nitric Oxide Support is new to The Feed and takes a different route to the same result. It’s worth understanding the difference before you decide what’s best for you.

Two different pathways

Most nitric oxide supplements, including SwissRX Nitric Oxide's core formula, work by stimulating an enzyme called nitric oxide synthase (NOS), the body's natural NO-producing machinery. That approach works well, but the enzyme itself becomes less responsive with age, so its effectiveness can fade over time.

Berkeley Life skips that enzyme step entirely and uses the dietary nitrate pathway instead. Nitrate from beetroot and potassium nitrate converts directly into nitrite then into nitric oxide—a conversion that doesn't depend on enzyme activity and stays effective regardless of age. The dose is measured to match the nitrate equivalent of 7oz of beetroot, delivered in two capsules instead of a plate of vegetables.

Proof you can actually see

This is what truly sets it apart. Berkeley Life ships with saliva test strips. Take a baseline reading, consume the capsules, test again 90 minutes later, and watch the number move. It's the same clinical marker used in the double-blind research behind the formula, which showed a 12.5 mmHg drop in systolic blood pressure, a 378% increase in nitrate levels, and a 28% improvement in flow-mediated dilation, the medical measure of blood flow.

How to use it

Two capsules once daily (ideally in the morning with food) to set a vascular baseline for the day. Keep in mind, antiseptic mouthwash kills the oral bacteria that convert dietary nitrate into nitrite, so it can blunt the effect. Fluoride toothpaste is fine, just skip the antibacterial rinse if you’re using this daily.

To sum things up, Berkeley Life Nitric Oxide Support and SwissRX Nitric Oxide use two different mechanisms, but they’re both aimed at the same result. Whether one is a better fit than the other comes down to whether the enzyme-based approach still feels like it's working, or whether a measurable, nitrate-only formula is worth a try.

Shop 20% Off Berkeley Life Nitric Oxide Support

- The Feed.