Enhanced Sleep Formula

product on market Capsule GNC Preventive Nutrition 🟢 Safety: 100/100
Brand: GNC Preventive Nutrition
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 44% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size
30 Servings
Other Combinations Product Type
44% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
30 mg (50% DV)
2 mg (100% DV)
✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)
RDA 1.3mg This product: 2mg UL 100mg
100 mcg (25% DV)
✅ Within RDA (0.2× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)
RDA 0.4mg This product: 0.1mg UL 1.0mg
20 mg (5% DV)
📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)
This product: 20mg
10 mg (67% DV)
✅ Within RDA (0.9× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)
RDA 11mg This product: 10mg UL 40mg
Calming & Relaxation Complex
Sleep Inducing Blend
Antioxidant Replenishment System
Circulation Optimizing Blend

Other Ingredients

Gelatin Cellulose L-Arginine Titanium Dioxide FD&C Blue #1

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) Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take two capsules before bedtime.

⚠️ Warnings & Precautions

KEEP OUT OF REACH OF CHILDREN.

WARNING: For adult use only at bedtime.

This product is not to be taken by pregnant or lactating women. If you are taking medication or have a medical condition, consult a physician before using this product.

Do not use in conjunction with alcoholic beverages, when driving a vehicle, or while operating machinery.

🧪 Formulation Notes

No Sugar, No Artificial Flavors, No Wheat, No Gluten, No Soy, No Dairy.

Additional Information

Store in a cool, dry place.

PHYSICIAN ENDORSED

CODE 714512 ING

Conforms to USP <2091> for weight. Meets USP <2040> disintegration.

Lot No./Best By:

PHYSICIAN FORMULATED NUTRITION SYSTEMS - Features premium, clinically studied ingredients that support restful sleep - Provides extended sleep support with sustained release melatonin

Product Details

UPC / SKU 0 48107 11842 6
DSLD Entry Date 2013-11-25
Product Type Other Combinations
Form Capsule
Brand GNC Preventive Nutrition
DSLD ID 27312
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 →

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