King Nitric Oxide

product on market Capsule Top Shelf 🟢 Safety: 95/100
Brand: Top Shelf
🟢 95/100

This product looks safe

  • Vitamin D3: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)
  • 29% of ingredients have research evidence
C Label Compliance Grade

Product Label

Label for King Nitric Oxide
📄 Open Full PDF View on NIH DSLD →
📸

Have a supplement label? Find it here.

Upload a photo of any supplement label to search our database of 92,312 products.

Safety Alerts

⚠️ Vitamin D3: 0.125mg is 1.2× the Tolerable Upper Intake Level (0.1mg)

Label Data

4 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
29% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
200 mg (222% DV)
125 mcg (625% DV)
⚠️ Exceeds Tolerable Upper Intake Level by 1.2× (UL: 0.1 mg) 📚 604 studies (Tier A: 16, B: 251)
RDA 0.015mg This product: 0.125mg UL 0.1mg
1000 mg
📊 Market median: 2000.0mg (275 products)
Median 2000.0mg This product: 1000mg
Nitrosigine
750 mg
Cistanche tubulosa Stem Extract
500 mg
Setria
100 mg
100 mcg
✅ Within RDA (0.8× RDA of 0.12 mg) 📚 273 studies (Tier A: 9, B: 175)
RDA 0.12mg This product: 0.1mg

Other Ingredients

Hypromellose Magnesium Stearate Silicon Dioxide Microcrystalline Cellulose

Label Claims — Verification

❓ All Other
❓ Structure/Function
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

🧪 Formulation Notes

More size / More blood flow / Less fatigue Science backed 2-in-1 performance Commitment to quality

GMP Certified Third-party Tested Premium ingredients

Additional Information

Viral on Tiktok Your kingdom will come

Product Details

DSLD Entry Date 2025-01-23
Product Type Other Combinations
Form Capsule
Brand Top Shelf
DSLD ID 321883
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
148 Meta Analysis
82 Systematic Review
71 Rct
62 Clinical Trial
2 Regulatory Source
1 Cochrane Review
1 Narrative Review
1 Other
1 Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015
PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020
PubMed DOI Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024
PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024
PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021
PubMed DOI
View all evidence for Vitamin C →

Compare Similar Products

Vitamin C Ester Ascorbyl Palmitate OL Olympian Labs 100
Vitamin C 1000 mg
Vitamin C 1000 mg PurHEALTH 100
Ultra C Buffered New Sun 100
Black Elderbarry with Liposomal Vitamin C & Zinc
Black Elderbarry with Liposomal Vitamin C & Zinc SunVita Health 100
Natural Vitamin C Herbadiet 100
View all Vitamin C products →
Vitamin C research & evidence Best Vitamin C rankings All Vitamin C products More from Top Shelf View on NIH DSLD →