Skip to main content
NOW Foods, AMINO_ACID, analyzed by IngredientMD

NOW L-Arginine 1000mg

1 ingredient documented, every dose read against the trials. The verdict set below is generated by the engine. NOW Foods can't edit it, and neither can we.

1 ingredient documentedRead line by lineLabel on file
NOW Foods NOW L-Arginine 1000mg, front of pack
Front of pack, photograph on file
The verdict
Ritual over dose.
For general wellness buyers.

L-Arginine at 1000mg is only 33% of the 3000mg minimum effective dose and 17% of the 6000mg optimal. Someone buying this for blood flow or performance will need 3-6 capsules per serving to get clinical benefits. Severely underdosed for its core purpose.

Also earned
Trusted GMP manufacturerClean single-ingredient profileHighly affordable

The set is generated, never written by the brand.

The read

NOW Foods NOW L-Arginine 1000mg: a solid everyday formula. Lead: L-Arginine at 1000mg. L-Arginine at 1000mg is only 33% of the 3000mg minimum effective dose and 17% of the 6000mg optimal. The primary is covered; some supporting doses sit below the studied amounts.

Nitric oxide support for blood flow and exercise recovery.. L-Arginine needs much higher doses to be effective for blood flow. Most clinical studies use 5 to 6 grams, so a single 1000mg pill is just a fraction of what you actually need. You'll likely need to swallow half the bottle to see the results you're looking for.

NOW Foods NOW L-Arginine 1000mg, front of packWhat's in this, per 2 veg capsules
✓ dose matches what trials used

1 of 1 shown

Also on the label (inactive): Hypromellose (cellulose capsule), Stearic Acid (vegetable source), Silicon Dioxide

NOW L-Arginine 1000mg supplement facts
What we analyzed

This read comes from the product's own supplement facts panel. Every dose was cross-referenced with published clinical trials to see whether it matches what the studies actually used.

1 ingredient read
The source label →
Work at NOW Foods? Put your own evidence on your product pages →
Capsules arranged in a tray
Behind every ingredient on this label
Read the evidence itself.

Every active in NOW L-Arginine 1000mg has its own page: doses, forms, interactions, cautions, and the studies behind them.

Browse the library