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Basic Preventive 2 (Iron and Copper Free)

product on market Tablet or Pill Douglas Laboratories Safety: 95/100
95/100

This product looks safe

  • Niacin: 200mg is 5.7× the Tolerable Upper Intake Level (35mg)
  • Folate: 1333mg is 1333.0× the Tolerable Upper Intake Level (1.0mg)
  • Magnesium Complex: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)
  • Manganese: 20mg is 1.8× the Tolerable Upper Intake Level (11mg)
  • 72% of ingredients have research evidence
F Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains essential fat-soluble and water-soluble vitamins that support immune function and cellular health. Strong clinical evidence supports the roles of vitamins A, C, D3, E, and K1 in maintaining systemic homeostasis. The formulation maintains a high safety score, indicating a low risk of adverse effects for most users.

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

Alerts

Safety Alerts

Niacin: 200mg is 5.7× the Tolerable Upper Intake Level (35mg)

Folate: 1333mg is 1333.0× the Tolerable Upper Intake Level (1.0mg)

Magnesium Complex: 500mg is 1.4× the Tolerable Upper Intake Level (350mg)

Manganese: 20mg is 1.8× the Tolerable Upper Intake Level (11mg)

Label

Product Label

Label for Basic Preventive 2 (Iron and Copper Free)
Open Full PDF View on NIH DSLD →
Details

Label Data

6 Tablet(s)
Serving Size
30
Servings
Other Combinations
Product Type
72%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
7500 mcg (833% DV)
1200 mg (1333% DV)
13.3× RDA — above typical dose (UL: 2000 mg) 250 studies (A:6, B:97)
2.5 mcg (13% DV)
Within RDA (0.2× RDA) 608 studies (A:16, B:251)
268 mg (1787% DV)
17.9× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
60 mcg (50% DV)
Within RDA (0.5× RDA) 275 studies (A:9, B:175)
100 mg (8333% DV)
83.3× RDA — above typical dose 76 studies (A:0, B:33)
50 mg (3846% DV)
38.5× RDA — above typical dose 13 studies (A:0, B:1)
200 mg (1250% DV)
Exceeds UL by 5.7× (UL: 35 mg) 196 studies (A:5, B:63)
50 mg (2941% DV)
38.5× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
1333 mcg DFE (333% DV)
Exceeds UL by 1333.0× (UL: 1.0 mg) 226 studies (A:10, B:105)
100 mcg (4167% DV)
41.7× RDA — above typical dose 139 studies (A:1, B:44)
300 mcg (1000% DV)
10.0× RDA — above typical dose 27 studies (A:0, B:11)
400 mg (8000% DV)
80.0× RDA — above typical dose 2 studies — no high-quality reviews
60 mg (11% DV)
Within RDA (0.1× RDA) 38 studies (A:1, B:7)
Calcium
500 mg (38% DV)
150 mcg (100% DV)
Within RDA (1.0× RDA) 245 studies (A:4, B:133)
500 mg (119% DV)
Exceeds UL by 1.4× (UL: 350 mg) 316 studies (A:8, B:159)
20 mg (182% DV)
1.8× RDA — within safe limits 263 studies (A:6, B:134)
200 mcg (364% DV)
3.6× RDA — above typical dose (UL: 0.4 mg) 173 studies (A:0, B:67)
20 mg (870% DV)
Exceeds UL by 1.8× (UL: 11 mg) 9 studies — no high-quality reviews
200 mcg (571% DV)
5.7× RDA — above typical dose 199 studies (A:1, B:55)
150 mcg (333% DV)
3.3× RDA — above typical dose (UL: 2 mg) 3 studies — no high-quality reviews
99 mg (2% DV)
Market median: 4002.0mg (1 products) 21 studies (A:0, B:2)
50 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
39 mcg
Market median: 0.5mg (6 products) 1 studies (A:0, B:1)
2 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Raw Glandular Tissue Blend
180 mg

Other Ingredients

Microcrystalline Cellulose Croscarmellose Sodium Hydroxypropyl Cellulose Stearic Acid Silica Vegetable Stearate Tablet Coating
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Usage: As a dietary supplement, adults take 6 tablets daily with food or as directed by your health professional.

Warnings & Precautions

Warning: Consult a health professional prior to use if you are taking blood thinners, medications or have a medical condition. Due to Vitamin A dose, this product is not recommended for women who may become pregnant or of child bearing age.

Keep out of the reach of children.

Use only if safety seal is intact.

Formulation Notes

Gluten-free, Non-GMO

Daily wellness

Additional Information

Store in a cool, dry place.

Contents may not fill package in order to accommodate required labeling. Please rely on stated quantity. Scan to learn about our manufacturing excellence

Metadata

Product Details

UPC / SKU3 10539 03846 8
DSLD Entry Date2020-08-23
Product TypeOther Combinations
FormTablet or Pill
BrandDouglas Laboratories
DSLD ID230374
Data Updated2026-04-11
Research

Research Evidence

42
Research Sources
53
Avg Quality
20
Meta Analysis
10
Systematic Review
9
Rct
1
Observational
1
Regulatory Source
B Trace Elements and Risk of Immune-Mediated Skin Disease: A Systematic Review and Meta-analysis
Meta Analysis Nutrition reviews 2025 PubMed DOI
B Blood Trace Element Status in Multiple Sclerosis: a Systematic Review and Meta-analysis
Meta Analysis Biological trace element research 2022 PubMed DOI
B Micronutrient deficiency risk in long-term enterally fed patients: A systematic review
Systematic Review Clinical nutrition ESPEN 2022 PubMed DOI
B Essential Trace Element Status in Systemic Lupus Erythematosus: a Meta-analysis Based on Case-Control Studies
Meta Analysis Biological trace element research 2023 PubMed DOI
B Association between serum copper/zinc ratio and lung cancer: A systematic review with meta-analysis
Meta Analysis Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS) 2022 PubMed DOI
B Vacuolated Marrow Cytopenias from Copper Deficiency to UBA1-Mutant VEXAS: Molecular Landscape, Systematic Review, and Cost-Efficient Diagnostic Algorithm
Systematic Review International journal of molecular sciences 2025 PubMed DOI
B Parenteral trace element provision: recent clinical research and practical conclusions
Systematic Review European journal of clinical nutrition 2016 PubMed DOI
B Copper Deficiency: A Frequently Overlooked Complication After MBS-A Systematic Review and Meta-analysis
Meta Analysis Obesity surgery 2025 PubMed DOI
B Copper in colorectal cancer patients: a systematic review and meta-analysis
Meta Analysis Carcinogenesis 2025 PubMed DOI
B Zinc deficiency and zinc/copper ratio imbalance in autism spectrum disorder: a reanalysis of six multinational studies
Meta Analysis Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine 2026 PubMed DOI
View all evidence for Copper →
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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.