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D5

product on market Tablet or Pill CHK Nutrition Safety: 95/100
95/100

This product looks safe

  • Folate: 340mg is 340.0× the Tolerable Upper Intake Level (1.0mg)
  • 50% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains Vitamin C, B6, folate, and calcium, which are supported by strong evidence for immune function and metabolic health. L-lysine is included for protein synthesis, though overall evidence coverage for this specific combination is limited. The profile maintains a high safety score.

AI-generated summary based on research evidence. Not medical advice.

Alerts

Safety Alerts

Folate: 340mg is 340.0× the Tolerable Upper Intake Level (1.0mg)

Label

Product Label

Label for D5
Open Full PDF View on NIH DSLD →
Details

Label Data

4 Tablet(s)
Serving Size
60
Servings
Other Combinations
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
500 mg (556% DV)
37.5 mg (2206% DV)
28.8× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
340 mcg DFE (85% DV)
Exceeds UL by 340.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
Calcium
110 mg (8% DV)
250 mg
Market median: 500.0mg (159 products)
Market median: 100.0mg (116 products) 18 studies (A:0, B:3)
1500 mg
Market median: 500.0mg (223 products) 24 studies (A:0, B:1)
Mucuna pruriens extract
300 mg

Other Ingredients

Stearic Acid Cellulose Dicalcium Phosphate Croscarmellose Sodium Magnesium Stearate Silicon Dioxide Hypromellose Hydroxypropyl Cellulose Polyethylene Glycol micronized Wax
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: Take 4 tablets twice per day.

Warnings & Precautions

Use only under the supervision of a licensed healthcare practitioner.

If you are pregnant or nursing consult your health care practitioner before use.

Keep away from children

Formulation Notes

98% + Pure 5-HTP

GF Gluten-free

Additional Information

Keep away from direct sunlight

This product is manufactured in a cGMP certified facility.

Metadata

Product Details

DSLD Entry Date2021-08-23
Product TypeOther Combinations
FormTablet or Pill
BrandCHK Nutrition
DSLD ID252890
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
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
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
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
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
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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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.