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Compare our L-Arginine with other brands.
See the difference for yourself. Compare what’s inside, spot the added extras, and see what sets Crown Supplements apart.
| Brand & product | L-Arginine per capsule | Added bulking or flow ingredients |
|---|---|---|
| Crown SupplementsL-Arginine | 520mg | None added by Crown Supplements |
| Holland & BarrettPrecision Engineered L-Arginine 500mg | 500mg | YESSilicon dioxide, magnesium stearate |
| SolgarL-Arginine 500mg | 500mg | YESMicrocrystalline cellulose, Magnesium stearate |
| NOW FoodsL-Arginine 500mg | 500mg | YESStearic acid, silicon dioxide |
| SwansonL-Arginine 500mg | 500mg | YESMagnesium stearate |
520mg L-Arginine. More in each capsule.
20mg more L-Arginine per capsule than each 500mg product compared in the table. No fillers, binders or machine flow agents added by Crown Supplements.
Your formula at a glance
Know what goes into your L-Arginine.
Crown Supplements puts 520mg of L-Arginine in each capsule. The comparison above pairs the amino acid amount with the named production ingredients, so both differences are easy to see.
Compare each capsule
520mg against 500mg: a direct comparison of the same amino acid amount.
Check the added ingredients.
The table names the bulking and flow agents in four competing products. No fillers, binders or machine flow agents added by Crown Supplements.
Make your choice on the details.
Read the actual amount
The ingredient weight is stated separately from the capsule shell and accompanying ingredients.
See the ingredient test
The raw-material certificate records 99.2% assay.
Choose by ingredients
Compare the named formula additions before choosing your supplement.
Six details worth checking.
Named ingredient
L-Arginine.
Measured amount
1,040mg across 2 capsules.
Documented material
99.2% raw-material assay.
Additional ingredients
Psyllium husk extract.
Our formulation
No fillers, binders or machine flow agents added by Crown Supplements.
Same formula, four sizes
Choose 90, 180, 270 or 360 capsules.
The formula comes first.
No fillers, binders or machine flow agents added by Crown Supplements.
Choose your pouch.
The same formula in every size.
L-Arginine Capsules — product details.
How to use and store.
Frequently asked questions.
Choose the formula that fits your standards.
20mg more L-Arginine per capsule than each 500mg product compared in the table.
No fillers, binders or machine flow agents added by Crown Supplements.
Crown Supplements. Named ingredients. Clearly stated amounts.
Great quality supplements !
I found l-arginine has helped my angina
Went a week without as run out and heart spasms came back SO will definitely continue with this FANTASTIC product
Thank you 🙏
Gym sessions have felt noticeably better since adding l arginine. I get a better pump and dont seem to fade as quickly halfway through training, plus recovery has felt a bit easier afterwards. ive tried a couple of arginine products before that upset my stomach but these have been fine. happy I found a straightforward uk option
Seems great at the minute i alternate from 1 and 2 capsules a day it suits me consuming them that way never had a problem with anything i’ve bought also everything gets delivered very quick
arginine has been useful before training. I feel a bit more warmed up during sets and the capsules are easier than powder
No strong smell with these l arginine capsules, which was a plus. the order arrived fine and they were simple to take
A full glass of water works best for me with l arginine. the capsules are larger but manageable
before gym sessions, these are simple to take with water. i have not noticed any stomach bother from them, which is what i was mainly checking
Increased stamina allows me to push through intensive exercise sessions better is that it promotes heart health, which is really important to me that encourages improved blood flow, improves workout performance boosts cardiovascular health.
L Arginine capsules are easy to use around training days. They have helped me keep that part of my routine consistent, and I like the simple capsule format