Other ingredients
Cellulose; Rice Flour
Image: NIH Office of Dietary Supplements, Dietary Supplement Label Database — No separate image reuse license stated
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Nitric Oxide
Capsule
Serving size3 Capsule(s)
Servings per containerNot listed
Package90 Capsule(s)
Data retrievedJul 28, 2026
Supplement Facts
Serving size 3 Capsule(s)
Nitri-Syl Proprietary L-Arginine Blend1680 mgDV not established
Arginine Alpha Keto-Glutarate1350 mgDV not established
MONO255 mgDV not established
Malate60 mgDV not established
Arginine Ketoisocaproate15 mgDV not established
L-Citrulline480 mgDV not established
Pine Bark Extract30 mgDV not established
Quercetin30 mgDV not established
Longjack Extract30 mgDV not established
BioPerine5 mgDV not established
Label directions
Suggested use: For best results; on workout days; take three capsules in the morning (before breakfast) and three capsules 30 minutes before workouts; and on non-workout days; take three capsules in the morning (before breakfast); and three capsules at night (before dinner).
Label warnings
Warning: Pregnant or nursing mothers children under the age of 18 and individuals with a known medical condition should consult with a physician before taking this or any other dietary supplement. Warning: Pregnant or nursing mothers children under the age of 18 and individuals with a known medical condition should consult with a physician before taking this or any other dietary supplement. Keep out of the reach of children. Do not use this product if outer seal around cap is missing or broken.
Identity and label version
NIH label record335677
Entered into NIH DSLDSep 25, 2025
UPC / GTINNot listed
Manufacturer / distributor on labelPremium Certified
Market statusOn market in the source data
“Entered into NIH DSLD” is the database entry date for this label record. It is not a manufacturer launch date or a label effective date.
NIH label history (1)
Current labelNIH record 335677Entered Sep 25, 2025
Nitri-Syl Proprietary L-Arginine Blend1680 mg
Arginine Alpha Keto-Glutarate1350 mg
MONO255 mg
Malate60 mg
Arginine Ketoisocaproate15 mg
L-Citrulline480 mg
Pine Bark Extract30 mg
Quercetin30 mg
Longjack Extract30 mg
BioPerine5 mg
Label warning: Warning: Pregnant or nursing mothers children under the age of 18 and individuals with a known medical condition should consult with a physician before taking this or any other dietary supplement. Warning: Pregnant or nursing mothers children under the age of 18 and individuals with a known medical condition should consult with a physician before taking this or any other dietary supplement. Keep out of the reach of children. Do not use this product if outer seal around cap is missing or broken.
Sources and traceability
- NIH Dietary Supplement Label DatabaseData retrieved Jul 28, 2026Open source ↗
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Data comes from product labels or official public sources. It does not mean Safmira, NIH, or FDA approves, certifies, or recommends this product. Label amounts are not laboratory measurements.