Home/ Supplements/ Grape Seed/ Masquelier's Tru-OPCs

Masquelier's Tru-OPCs

product on market Tablet or Pill Nature's Way Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 50% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Grape seed extract contains oligomeric proanthocyanidins, which are studied for their antioxidant properties and potential to support cardiovascular health. Current research provides moderate evidence for these effects. The product's ingredient profile maintains a high safety score.

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

Label

Product Label

Label for Masquelier's Tru-OPCs
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Tablet(s)
Serving Size
45
Servings
Botanical
Product Type
50%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Total Carbohydrates
1 Gram(s) (1% DV)
Market median: 100.0mg (284 products) 10 studies (A:0, B:4)

Other Ingredients

Cellulose Maltodextrin Sodium Croscarmellose Stearic Acid Hypromellose Silica Glycerin
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Recommendation: Take 2 tablets one to two times daily.

Warnings & Precautions

Caution: If you are pregnant, nursing, have a blood clotting disorder, or taking any medications, consult a healthcare professional before use.

Keep out of reach of children.

Safety sealed with printed inner seal. Do not use if seal is broken or missing.

Formulation Notes

Skin and vascular health

Tru-OPCs contain the combination of monomers and oligomers isolated by Dr. Jack Masquelier. Our Tru-OPCs are carefully tested and produced to superior quality standards.

Premium extract

Grape seed extract Masquelier's Tru-OPCs 150 mg per serving

Gluten free. No salt, yeast-derived ingredients, wheat, soy, dairy products, or artificial colors, flavors, or preservatives.

Vegan

Additional Information

Nature’s Way Since 1969

Bottles made from 97% post-consumer recycled plastic

Quality Global Sourcing Bottled & Tested In the USA

Metadata

Product Details

UPC / SKU0 33674 49131 7
DSLD Entry Date2020-02-26
Product TypeBotanical
FormTablet or Pill
BrandNature's Way
DSLD ID213482
Data Updated2026-04-11
Research

Research Evidence

14
Research Sources
50
Avg Quality
9
Rct
2
Meta Analysis
2
Clinical Trial
1
Systematic Review
B Low Dose Monacolin K Combined with Coenzyme Q10, Grape Seed, and Olive Leaf Extracts Lowers LDL Cholesterol in Patients with Mild Dyslipidemia: A Multicenter, Randomized Controlled Trial
Rct Nutrients 2023 PubMed DOI
B Efficacy of Bilberry and Grape Seed Extract Supplement Interventions to Improve Glucose and Cholesterol Metabolism and Blood Pressure in Different Populations-A Systematic Review of the Literature
Systematic Review Nutrients 2021 PubMed DOI
B The effect of grape seed extract on cardiovascular risk markers: a meta-analysis of randomized controlled trials
Meta Analysis Journal of the American Dietetic Association 2011 PubMed DOI
B The impact of grape seed extract treatment on blood pressure changes: A meta-analysis of 16 randomized controlled trials
Meta Analysis Medicine 2016 PubMed DOI
B Grape Seed Extract Positively Modulates Blood Pressure and Perceived Stress: A Randomized, Double-Blind, Placebo-Controlled Study in Healthy Volunteers
Rct Nutrients 2021 PubMed DOI
C Effects of grape seed extract beverage on blood pressure and metabolic indices in individuals with pre-hypertension: a randomised, double-blinded, two-arm, parallel, placebo-controlled trial
Rct The British journal of nutrition 2016 PubMed DOI
C Effect of grape seed extract on blood pressure in subjects with the metabolic syndrome
Rct Metabolism: clinical and experimental 2009 PubMed DOI
C Grape seed extract supplementation along with a restricted-calorie diet improves cardiovascular risk factors in obese or overweight adult individuals: A randomized, placebo-controlled trial
Rct Phytotherapy research : PTR 2021 PubMed DOI
C The effect of polyphenol-rich chardonnay seed supplements on peripheral endothelial function.
Rct European journal of nutrition PubMed DOI
C The effects of grape seed extract supplementation on cardiovascular risk factors, liver enzymes and hepatic steatosis in patients with non-alcoholic fatty liver disease: a randomised, double-blind, placebo-controlled study.
Rct BMC complementary medicine and therapies PubMed DOI
View all evidence for Grape Seed →
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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.