L-Arginine
The nitric oxide precursor behind MemoHoney's circulation-first mechanism.
| Amount per capsule | 500 mg* |
|---|---|
| Category | Amino acid |
| Stimulant? | No |
What it is
L-Arginine is a semi-essential amino acid, meaning the body can produce some on its own but often benefits from additional dietary intake, especially under physical or metabolic stress. It's classified as a nitric oxide precursor — the raw material an enzyme called eNOS uses to produce nitric oxide (NO).
How it works
Nitric oxide is a signaling molecule that tells the smooth muscle lining blood vessels to relax, a process called vasodilation. Wider, more relaxed blood vessels reduce resistance to blood flow, which supports more consistent delivery of oxygen and glucose to metabolically active tissue — including the brain, which uses a disproportionately large share of the body's oxygen supply relative to its size.
Why it's paired with L-Citrulline
Taken alone, arginine is broken down relatively quickly in the gut and liver, which limits how much reaches systemic circulation and how long its effect lasts. That's the specific gap L-Citrulline is included to close — see the L-Citrulline profile for how the two work as a pair.
Where it's commonly studied
- Cardiovascular and blood-pressure research, where vasodilation is the primary mechanism of interest
- Sports nutrition and exercise performance, often marketed as a "pre-workout" pump ingredient
- General circulatory-support formulations, including cognitive-wellness products like MemoHoney
Safety notes
Because arginine affects blood vessel relaxation, anyone taking blood pressure medication, nitrates, or other vasodilating drugs should talk to a doctor before adding a supplemental source. It is not recommended during pregnancy or nursing without medical guidance, and generally healthy adults are the intended audience for this ingredient at supplement-level doses.