True Nano H₂ with L-Citrulline — Blood Flow & Pump Support
L-citrulline is the gold standard for nitric oxide support, and nitric oxide is what drives blood flow. Paired here with molecular hydrogen for circulation and recovery support.
- Molecular hydrogen plus L-citrulline in one capsule
- Supports nitric oxide production and healthy blood flow
- Supports training pump and exercise performance
- Selective antioxidant action preserves nitric oxide signalling
- Made in the USA in an FDA-registered, cGMP facility
Ships from Amazon. Best for: Pre-workout use, circulation-focused routines, and anyone stacking for blood flow support.
About H₂ + L-Citrulline
L-citrulline is converted in the kidneys to L-arginine, which is the direct precursor to nitric oxide. Counterintuitively, supplementing citrulline raises circulating arginine more effectively than supplementing arginine itself, because arginine taken orally is largely broken down before it reaches circulation. This is why citrulline displaced arginine as the preferred pre-workout ingredient.
Nitric oxide relaxes the smooth muscle lining blood vessels, which supports healthy blood flow — the mechanism behind the training pump, and the reason this ingredient shows up in nearly every serious pre-workout formula.
Molecular hydrogen complements this rather than duplicating it. Nitric oxide is itself a beneficial signalling molecule, and because H₂ is a *selective* antioxidant that preferentially targets hydroxyl radicals, it supports oxidative balance without indiscriminately scavenging the nitric oxide you are working to produce. That selectivity is precisely why this pairing makes sense where a broad-spectrum antioxidant would work against itself.
Specifications
| Serving size | 1 capsule |
|---|---|
| Key pairing | L-citrulline |
| Count | 60 capsules |
| Focus | Circulation and performance |
| Made in | USA — FDA-registered, cGMP facility |
Frequently asked questions
When should I take this for training?
Roughly 30 to 60 minutes before a session is the common pattern, which lines up with the conversion of citrulline to arginine and the resulting rise in nitric oxide.
Does molecular hydrogen cancel out nitric oxide?
No, and this is the specific reason H₂ pairs well here. Unlike broad-spectrum antioxidants, molecular hydrogen is selective — it preferentially targets the hydroxyl radical and leaves beneficial signalling molecules like nitric oxide alone.
How is a hydrogen capsule different from a dissolvable hydrogen tablet?
Both work by the same chemistry — magnesium reacting with acid to generate hydrogen gas (Mg + 2H⁺ → Mg²⁺ + H₂). The difference is where that reaction happens. A dissolvable tablet carries its own acid, so it reacts in a glass of water on your counter, and hydrogen starts escaping into the air immediately because H₂ is the smallest molecule there is. A True Nano H₂ capsule carries no acid — it uses the hydrochloric acid already in your stomach, so the hydrogen is generated inside you, at the point of absorption. There is nothing to mix, nothing to time, and nothing lost to the room.
Can I just open the capsule and mix it into water?
No, and it will not work the way you expect. The reaction needs acid. Magnesium reacts only slowly with neutral water, because it quickly forms a magnesium hydroxide layer on its surface that stalls the reaction — that passivation is exactly why dissolvable tablets have to include their own food-grade acid to work in a glass. Stomach acid strips that layer and drives the reaction properly. Open the capsule into water and you get a slow, incomplete reaction, and whatever hydrogen does come off escapes into the air instead of into you. Swallow the capsule.
When should I take it?
One to two capsules, one to three times daily, with or without food. Many people prefer the morning for daytime energy support, or roughly 30 minutes before training when they are using it around exercise. There is no loading phase.
Does molecular hydrogen have a taste or smell?
No. Molecular hydrogen is odourless and tasteless, and the capsules are designed to be easy to swallow. This is one of the practical advantages over hydrogen water, which some people find flat or metallic depending on the source water.
Where are these made?
In the USA, in an FDA-registered facility operating under Good Manufacturing Practice (cGMP) standards.
Also in the True Nano line
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.