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Met-A-SynX-Pack

product on market Other (e.g. tea bag) Douglas Laboratories Safety: 90/100
90/100

This product looks safe

  • Niacin/Niacinamide: 48mg is 1.4× the Tolerable Upper Intake Level (35mg)
  • Contains proprietary blend — exact ingredient amounts not disclosed
  • 42% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This profile contains essential vitamins including A, C, D3, E, and thiamine, which support immune function and cellular health. There is strong research evidence supporting the physiological roles of these micronutrients in maintaining general wellness. 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/Niacinamide: 48mg is 1.4× the Tolerable Upper Intake Level (35mg)

Contains proprietary blend — exact ingredient amounts not disclosed

Label

Product Label

Label for Met-A-SynX-Pack
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Packet(s)
Serving Size
30
Servings
Other Combinations
Product Type
42%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin A
3750 IU (75% DV)
350 mg (583% DV)
3.9× RDA — above typical dose (UL: 2000 mg) 250 studies (A:6, B:97)
100 IU (25% DV)
Within RDA (0.2× RDA) 608 studies (A:16, B:251)
100 IU (333% DV)
4.5× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
25 mg (1667% DV)
20.8× RDA — above typical dose 76 studies (A:0, B:33)
13 mg (765% DV)
10.0× RDA — above typical dose 13 studies (A:0, B:1)
48 mg (240% DV)
Exceeds UL by 1.4× (UL: 35 mg) 196 studies (A:5, B:63)
Vitamin B-6 Complex
25 mg (1250% DV)
200 mcg (50% DV)
Within RDA (0.5× RDA) 226 studies (A:10, B:105)
63 mcg (1050% DV)
26.3× RDA — above typical dose 139 studies (A:1, B:44)
75 mcg (25% DV)
2.5× RDA — within safe limits 27 studies (A:0, B:11)
125 mg (1250% DV)
25.0× RDA — above typical dose 2 studies — no high-quality reviews
Calcium
125 mg (13% DV)
50 mcg (33% DV)
Within RDA (0.3× RDA) 245 studies (A:4, B:133)
125 mg (31% DV)
Within RDA (0.3× RDA) 316 studies (A:8, B:159)
6 mg (40% DV)
Within RDA (0.5× RDA) 263 studies (A:6, B:134)
50 mcg (71% DV)
Within RDA (0.9× RDA) 173 studies (A:0, B:67)
0.5 mg (25% DV)
Within RDA (0.6× RDA) 37 studies (A:0, B:11)
3 mg (150% DV)
1.3× RDA — within safe limits 9 studies — no high-quality reviews
250 mcg (208% DV)
7.1× RDA — above typical dose 199 studies (A:1, B:55)
25 mcg (33% DV)
Within RDA (0.6× RDA) 3 studies — no high-quality reviews
Potassium
25 mg (1% DV)
Market median: 600.0mg (321 products) 5 studies — no high-quality reviews
Plant Sterols
400 mg
Gymnema sylvestre extract
400 mg
Market median: 500.0mg (193 products) 7 studies — no high-quality reviews
Cinnulin PF Cinnamon extract
250 mg
Proprietary Blend
175 mg
Sytrinol
150 mg
Market median: 100.0mg (283 products) 144 studies (A:1, B:64)
Market median: 250.0mg (182 products) 10 studies (A:0, B:2)
L-Cysteine/N-Acetyl L-Cysteine
38 mg
29 mg
Market median: 496.0mg (192 products) 20 studies — no high-quality reviews
Rose Hips
25 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Blueberry
25 mg
25 mg
Market median: 500.0mg (497 products) 135 studies (A:0, B:40)
Broccoli
25 mg
Cauliflower
25 mg
25 mg
Market median: 200.0mg (107 products)
25 mg
Market median: 4.0mg (67 products)
Green Papaya extract
25 mg
25 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
15 mg
Market median: 125.0mg (294 products) 38 studies (A:1, B:7)
13 mg
Market median: 100.0mg (284 products) 10 studies (A:0, B:4)
Market median: 260.0mg (249 products) 158 studies (A:4, B:61)
sprouted Barley juice
13 mg
Wheat Grass juice
13 mg
Beet extract
13 mg
Apple Pectin
13 mg
13 mg
Market median: 500.0mg (9 products) 7 studies — no high-quality reviews
13 mg
Market median: 200.0mg (136 products) 3 studies — no high-quality reviews
Hesperidin
9 mg
6 mg
Market median: 500.0mg (19 products)
Glutamic Acid
5 mg
Market median: 500.0mg (193 products) 7 studies — no high-quality reviews
1.5 mg
Market median: 10.0mg (105 products) 2 studies (A:0, B:1)
1.5 mg
Market median: 10.0mg (35 products) 6 studies (A:0, B:2)
0.4 mg
Market median: 3.0mg (58 products) 3 studies — no high-quality reviews
0.25 mg
Market median: 4.0mg (32 products)
Trace Elements
25 mcg
13 mcg
Market median: 0.5mg (6 products) 1 studies (A:0, B:1)

Other Ingredients

Cellulose Mannitol Sorbitol Vegetable Stearate Gelatin Silica Citric Acid natural Lemon-Lime flavor natural Orange flavor Povidone
Claims

Label Claims — Verification

Unverified All Other
Info

Product Information

Directions for Use

Suggested Usage: As a dietary supplement, adults take 1 pack daily or as directed by your healthcare professional. This product is best taken with meals.

Warnings & Precautions

Tamper resistant package, do not use if outer seal is missing.

KEEP OUT OF REACH OF CHILDREN.

If you are pregnant, nursing, or have diabetes or any other medical condition for which you are under the care of a physician, consult your doctor before using this product.

Formulation Notes

Each Pack Contains: two oval shaped, dark speckled, olive green multi-vitamin tablets, two khaki colored natural vegetable capsules, two natural gelatin capsules containing light tan powder, two brown speckled, natural vegetable capsules and one round, yellow, uncoated tablet with specks.

This product contains NO yeast, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.

Additional Information

Sytrinol(TM)

Formula #64198

For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Metadata

Product Details

UPC / SKU3 10539 03181 0
DSLD Entry Date2012-06-25
Product TypeOther Combinations
FormOther (e.g. tea bag)
BrandDouglas Laboratories
DSLD ID9705
Data Updated2026-04-11
Research

Research Evidence

337
Research Sources
54
Avg Quality
161
Meta Analysis
68
Systematic Review
51
Rct
48
Clinical Trial
2
Other
2
Regulatory Source
1
Narrative Review
1
Cochrane Review
1
Guideline
1
Openfda Safety
A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection
Meta Analysis The Cochrane database of systematic reviews 2011 PubMed DOI
A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis
Meta Analysis BMJ (Clinical research ed.) 2011 PubMed DOI
A Fortification of staple foods with vitamin A for vitamin A deficiency
Systematic Review The Cochrane database of systematic reviews 2019 PubMed DOI
A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age
Narrative Review The Cochrane database of systematic reviews 2016 PubMed DOI
A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials
Meta Analysis Journal of sport and health science 2023 PubMed DOI
A Food fortification with multiple micronutrients: impact on health outcomes in general population
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
View all evidence for Vitamin A →
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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.