Benefits
Blood Pressure Within Normal Range — UC Davis Trials
Two placebo-controlled human clinical trials at UC Davis School of Medicine Department of Preventative Cardiology found MegaNatural-BP supports blood pressure within normal range. Metabolic Syndrome trial showed 12 mmHg systolic / 8 mmHg diastolic reductions; prehypertension trial showed 8 mmHg systolic / 5 mmHg diastolic reductions at 300 mg/day.
Three Placebo-Controlled Human Clinical Trials
Backed by THREE placebo-controlled human clinical trials — distinguishes from many grape seed extracts with weaker evidence.
Endothelial Function Improvement
Improves endothelial function and overall vascular health in multiple RCTs.
Athletic Performance via Blood Flow
9 clinical studies showing improvements in blood flow and athletic performance — relevant pre-workout ingredient for endurance.
Six-Week Onset
Clinical studies show benefits after just 6 weeks — practical timeline for consumer applications.
Patented Hot-Water Extraction
Distinctive manufacturing process produces unique structure and composition vs solvent-extracted generics.
Sustainable California Origin
Made in California from special seed blend from unfermented red and white wine grape seeds — sustainable byproduct upcycling from E. & J. Gallo Winery.
Mechanism of action
Proanthocyanidin (PAC) Vascular Effects
Grape seed proanthocyanidins enhance endothelial nitric oxide synthase (eNOS); improve vasodilation; modest BP effects.
Antioxidant ORAC Activity
>90% proanthocyanidin content provides high ORAC antioxidant capacity; quenches vascular reactive oxygen species.
ACE Inhibition (Modest)
Modest angiotensin-converting enzyme inhibition; relevant to BP effects.
Hot-Water Extraction Distinction
Polyphenolics' patented hot-water process produces specific PAC profile distinct from solvent-extracted alternatives.
Capillary Integrity
PACs support capillary integrity broadly relevant to vascular health.
Clinical trials
Placebo-controlled trial of MegaNatural-BP in metabolic syndrome patients at UC Davis Department of Preventative Cardiology.
Metabolic syndrome patients with elevated BP.
12 mmHg systolic / 8 mmHg diastolic reductions vs placebo. Significant BP reductions.
RCT of MegaNatural-BP 300 mg/day for 2 months in prehypertension patients.
Prehypertensive adults.
8 mmHg systolic / 5 mmHg diastolic reductions vs placebo. Established prehypertension evidence.
RCT in pre- and stage I hypertension at 300 mg/day.
Pre- and stage I hypertensive adults.
Improved ambulatory blood pressure measurements.
About this ingredient
MEGANATURAL®-BP is a PATENTED GRAPE SEED EXTRACT developed by POLYPHENOLICS — DIVISION of CALIFORNIA NATURAL COLOR and E. & J. GALLO WINERY (distributed by PLT Health Solutions).
KEY DISTINCTIONS: (1) PATENTED hot-water extraction process; (2) UNIQUE structure and composition vs other grape seed extracts; (3) >90% PROANTHOCYANIDIN content; (4) THREE placebo-controlled human clinical trials at UC DAVIS; (5) FROST & SULLIVAN 2010 North American Product Differentiation Excellence of the Year Award; (6) FDA GRAS no-objection; (7) MADE IN CALIFORNIA from unfermented red and white varietal wine grape seeds; (8) Sustainable agriculture (Gallo winery byproduct upcycling); (9) HPLC-verified consistency batch-to-batch; (10) Millions of capsules sold over 5+ years confirming safety.
EVIDENCE-BASED USES: (1) BLOOD PRESSURE WITHIN NORMAL RANGE — established UC Davis evidence; (2) Endothelial function; (3) Vascular health; (4) Athletic performance and blood flow; (5) Antioxidant defense.
CRITICAL CAUTIONS: (1) BLOOD PRESSURE MEDICAL EVALUATION — significant elevated BP warrants medical evaluation and treatment; MegaNatural-BP is for blood pressure SUPPORT WITHIN NORMAL RANGE or as adjunct; not replacement for hypertension medications when needed; (2) ANTIHYPERTENSIVE MEDICATIONS — additive BP-lowering effects; consult; (3) ANTICOAGULANTS — modest antiplatelet effects; (4) PRE-SURGERY — discontinue 1-2 weeks; (5) DOSE — 150-300 mg/day MegaNatural-BP research-validated; (6) DURATION — BP effects build over 6 weeks; consistent use needed; (7) PREGNANCY — culinary grape safe; concentrated supplementation limited specific data; (8) MEGANATURAL-BP vs GENERIC GRAPE SEED EXTRACT — extensive evidence base distinguishes; specific patented process; many generic GSE products do not match clinical evidence; (9) MEGANATURAL-BP vs LEUCOSELECT (Indena) — both branded GSE; LEUCOSELECT has phytosome technology; MEGANATURAL-BP has hot-water extraction with UC Davis trials; both have evidence; (10) FOR COMPREHENSIVE CARDIOVASCULAR HEALTH — diet (especially Mediterranean/DASH), exercise, weight management, medications when warranted; supplements adjunct; (11) FOR ATHLETIC PERFORMANCE — blood flow improvements relevant to endurance; pre-workout applications; (12) BRAND VERIFICATION — MegaNatural®-BP is Polyphenolics trademark (distributed by PLT Health Solutions); specific patented extraction; clinical evidence on this branded form; (13) Among the most evidence-based grape seed extracts globally.