Nitric Oxide 1200mg — direct answers
What is it? Vitality Supplements Nitric Oxide is a food supplement providing a 1200mg L-Arginine & L-Citrulline amino acid complex per 2-capsule serving, plus 80mg Beta-Alanine, with Niacin (Vitamin B3).
How much per serving? 400mg L-Arginine (base), 400mg L-Arginine AKG, 200mg L-Citrulline HCl, 200mg L-Citrulline Malate, 80mg Beta-Alanine, 15mg NE Niacin (94% NRV).
Why two forms of Arginine and Citrulline? The free-form amino acid is combined with a bound salt form (Alpha-Ketoglutarate, Hydrochloride, Malate) for solubility and stability in a capsule. This describes the formulation, not an effect on the body.
How many capsules? 60 capsules per pouch — 30 servings, a 30-day supply at two capsules daily.
How is it taken? As a food supplement, adults take 2 capsules daily with water, preferably with food, or as directed by a healthcare professional. Do not exceed the stated recommended daily dose.
Is it tested? It is third-party tested for identity and purity.
Where is it made? Manufactured in the United Kingdom.
Is it vegan? Yes. The capsule shell is Hydroxypropyl Methylcellulose (HPMC).
Who should not take it? Not for under-18s. If pregnant, breastfeeding, taking medication or under medical supervision, consult a healthcare professional before use.
Does it carry any authorised nitric oxide, pump or performance claim? No. There are no authorised UK/GB health claims for L-Arginine, L-Citrulline or Beta-Alanine. The only authorised claim on this pack belongs to Niacin: it contributes to the reduction of tiredness and fatigue, and to normal energy-yielding metabolism.
Pricing and terms. Free UK delivery; 60-day money-back guarantee; subscribe and save is available on the single pouch with the option to skip, pause or cancel at any time.
Nitric Oxide1200mg Amino Complex
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Three amino acids,
one full-dose complex.
L-Arginine and L-Citrulline are amino acids the body uses across a range of metabolic pathways, including the nitric oxide synthesis pathway. Beta-Alanine is a precursor of carnosine, stored in skeletal muscle. This is a description of what these amino acids are, not a claim about what this product does in the body — we cover the rules in depth in our guide to nitric oxide amino complexes.
L-Citrulline complex
per serving
per serving
Five ingredients,
one exact ratio.
A straightforward, factual walk-through of how this complex is formulated and produced.
Five actives. Full-dose transparency.
No fillers hiding the dose. No proprietary blend. Every milligram printed on the label.
Four actives — the complete breakdown.
No fillers beyond what holds the capsule together. Full-dose transparency on the label.
What is L-Arginine?
L-Arginine is a conditionally essential amino acid involved in a range of metabolic pathways, including as a substrate in the body's nitric oxide synthesis pathway. This product provides it in two forms: the free-form base and Alpha-Ketoglutarate (AKG), a salt form bound to alpha-ketoglutaric acid.
This product is standardised to a consistent dose per serving and third-party tested for identity and purity. For what separates one amino complex from another, see how to choose.
- 400mg L-Arginine (base) per serving
- 400mg L-Arginine Alpha-Ketoglutarate (2:1) per serving
- 800mg combined Arginine per 2-capsule serving
- No authorised UK/GB health claim at any dose
What is L-Citrulline?
L-Citrulline is a non-essential amino acid, part of the body's urea cycle, that is converted to L-arginine in the kidneys. This product combines L-Citrulline Hydrochloride and L-Citrulline Malate.
Combined with the Arginine complex above, this gives 1200mg of L-Arginine and L-Citrulline per serving — the full amino dose printed on the label.
- 200mg L-Citrulline Hydrochloride per serving
- 200mg L-Citrulline Malate per serving
- 400mg combined Citrulline per 2-capsule serving
- No authorised UK/GB health claim at any dose
What is Beta-Alanine?
Beta-Alanine is a non-proteinogenic amino acid and the rate-limiting precursor of carnosine synthesis in skeletal muscle. It is commonly reported to cause a temporary, harmless tingling sensation (paraesthesia) — see the FAQ below.
- 80mg Beta-Alanine per 2-capsule serving
- No authorised UK/GB health claim at any dose
- May cause temporary tingling (paraesthesia) — harmless and self-resolving
What does Niacin do?
Niacin is a water-soluble B vitamin. It is the one ingredient on this pack with an authorised UK/GB health claim: it contributes to the reduction of tiredness and fatigue, and to normal energy-yielding metabolism.
- 15mg NE Niacin (as Nicotinamide) per serving — 94% NRV
- Contributes to the reduction of tiredness and fatigue*
- Contributes to normal energy-yielding metabolism*
- *Authorised EU/GB health claim, at the stated NRV
| Composition | Per 2 capsules | %NRV |
|---|---|---|
| Niacin (as Nicotinamide) | 15 mg NE | 94% |
| Calcium (as Carbonate) | 36 mg | 4.5% |
| L-Arginine (base) | 400 mg | † |
| L-Arginine AKG (2:1) | 400 mg | † |
| L-Citrulline HCl | 200 mg | † |
| L-Citrulline Malate | 200 mg | † |
| Beta-Alanine | 80 mg | † |
Ingredients: L-Arginine, L-Arginine Alpha-Ketoglutarate (2:1), L-Citrulline Hydrochloride, L-Citrulline Malate, Calcium Carbonate, Beta-Alanine, capsule shell (Hydroxypropyl Methylcellulose), Nicotinamide (Vitamin B3), anti-caking agents (Silicon Dioxide, Magnesium Stearate). Free from gluten, dairy, soy, nuts, artificial colours and preservatives. Vegan capsule shell. Manufactured in a UK facility.
How we compare.
Specification comparison vs typical UK-available nitric oxide / amino complex supplements (spec-sheet analysis, 2026).
| Feature | Vitality Nitric Oxide | Typical UK amino complexes |
|---|---|---|
| Dose per serving | ✓ 1200mg Arginine & Citrulline | Often hidden in a proprietary blend |
| Format | ✓ Capsules — no scooping or mixing | Usually powder, requires mixing |
| Stimulant content | ✓ None — caffeine-free | Often stimulant-based |
| Third-party testing | ✓ Identity & purity, every batch | ✗ Rarely per-batch |
| UK manufacturing | ✓ UK manufactured | Often overseas |
| Capsule shell | ✓ Vegan (HPMC) | Varies — gelatin common |
| Proprietary blends | ✓ None — full transparency | Sometimes used to hide dose |
| Money-back guarantee | ✓ 60-day satisfaction guarantee | Varies — often 14 days or none |
What we can say —
and what we can’t.
Most of this category sells “nitric oxide” on claims that aren’t authorised in Great Britain. We’d rather show you the rule and where we sit against it.
- •The dose: 1200mg L-Arginine & L-Citrulline per serving
- •The composition: plus 80mg Beta-Alanine, no proprietary blend
- •Niacin’s authorised claim: reduction of tiredness and fatigue
- •The forms used: base + AKG arginine, HCl + malate citrulline
- •The testing: identity and purity, verified independently
- •Anything about nitric oxide levels, blood flow or vasodilation
- •Anything about exercise performance, pumps or endurance
- •Anything about muscle recovery or growth
- •Anything about cardiovascular or blood pressure effects
- •Any claim to treat, prevent or cure a disease
There is a Great Britain authorised health claim for Niacin: that it contributes to the reduction of tiredness and fatigue, and to normal energy-yielding metabolism. This product provides 15mg NE per serving — 94% of the Nutrient Reference Value. That claim belongs to the Niacin in this formula, not to the L-Arginine, L-Citrulline or Beta-Alanine alongside it.
If you see a nitric oxide or pre-workout amino product making pump, blood flow or performance claims, that is worth questioning — none of those are currently authorised in Great Britain for these ingredients. We explain the rules in full in our guide to nitric oxide amino complexes.
The protocol.
Simple and consistent.
Frequently asked questions.
What is this Nitric Oxide Amino Complex?
+A food supplement combining L-Arginine, L-Citrulline and Beta-Alanine — three amino acids the body uses across a range of metabolic pathways — together with Niacin (Vitamin B3). This product is a food supplement, not a medicine, and is not intended to diagnose, treat, cure or prevent any disease.
What's in each serving?
+Each 2-capsule serving provides a 1200mg L-Arginine and L-Citrulline complex (400mg L-Arginine base, 400mg L-Arginine AKG, 200mg L-Citrulline HCl, 200mg L-Citrulline Malate), plus 80mg Beta-Alanine and Niacin at 94% NRV. The full breakdown is printed on the supplement-facts panel; there is no proprietary blend.
Why two forms of L-Arginine and L-Citrulline?
+Manufacturers commonly combine the free-form amino acid with a bound or salt form — here, Arginine Alpha-Ketoglutarate and Citrulline Malate/HCl — for solubility and stability in a capsule. This is a description of the formulation, not a claim about how it performs in the body.
Does this qualify for any nitric oxide, pump or performance claim?
+No. There are no authorised UK/GB health claims for L-Arginine, L-Citrulline or Beta-Alanine. The only authorised health claim on this pack belongs to Niacin, so we do not make nitric oxide, blood flow, pump or performance claims on this listing.
What does the Niacin do?
+Niacin (Vitamin B3) contributes to the reduction of tiredness and fatigue, and to normal energy-yielding metabolism. This product provides 15mg NE per serving, 94% of the Nutrient Reference Value.
When and how should I take it?
+As a food supplement, adults take 2 capsules daily with water, preferably with food, or as directed by a healthcare professional. Do not exceed the stated recommended daily dose.
Is it vegan?
+Yes. The capsule shell is Hydroxypropyl Methylcellulose (HPMC), a vegan capsule shell.
What are the full ingredients and allergen information?
+L-Arginine, L-Arginine Alpha-Ketoglutarate (2:1), L-Citrulline Hydrochloride, L-Citrulline Malate, Calcium Carbonate, Beta-Alanine, capsule shell (Hydroxypropyl Methylcellulose), Nicotinamide (Vitamin B3), anti-caking agents (Silicon Dioxide, Magnesium Stearate). Free from gluten, dairy, soy, nuts, artificial colours and preservatives. Manufactured in a UK facility.
Is it safe? Are there any cautions?
+Food supplements must not replace a varied, balanced diet and healthy lifestyle. If pregnant, breastfeeding or on medication, consult a doctor before use. Keep out of reach of children and store in a cool, dry place. Discontinue use and consult a doctor if adverse reactions occur.
Will Beta-Alanine cause a tingling sensation?
+Beta-Alanine can cause a temporary tingling sensation (paraesthesia) in some people, typically in the face, neck or hands. It is harmless and usually fades within an hour. Splitting the two capsules across the day rather than taking them together can reduce the effect.
What does third-party tested mean here?
+An independent laboratory tests finished-product batches for identity and purity before release.
Can I take it alongside other supplements or medication?
+There are no widely reported interactions between these amino acids and common medications, but as a general precaution, tell your GP or pharmacist about all supplements you take, and consult them if you are on prescribed medication or have a medical condition.
What is your returns and satisfaction guarantee policy?
+We offer a 60-day satisfaction guarantee. Email us within 60 days of delivery for a full refund — no return required, no restocking fee. Your statutory rights under the Consumer Rights Act 2015 apply in addition and are unaffected.
Why does this product use a vegan capsule shell?
+This SKU is formulated with a Hydroxypropyl Methylcellulose (HPMC) capsule shell, suitable for vegans and vegetarians, in line with the rest of the range.
Learn before you commit.
Written for people who want to understand what they’re taking.
The Annual Supply.
One full year of Nitric Oxide at the lowest per-day cost — just 42p a day. For those who already know that consistency is the whole point.
- The lowest per-day cost of any pack
- Free priority UK delivery
- Same third-party testing on every batch
- Backed by the 60-day satisfaction guarantee
1200mg Nitric Oxide.
Every milligram on the label.
L-Arginine & L-Citrulline amino complex, plus Beta-Alanine and Niacin · 60 vegan capsules · 30 servings. Third-party tested. UK manufactured. 60-day guarantee.
