Echinacea Plus Vitamin C

Echinacea Plus Vitamin C and 293 near-identical products are sold under 140 different brand names — a near-twin Formula Twins cluster.

Product	Brand
Echinacea Plus Vitamin C	GNC Herbal Plus Standardized
Red Wine Extract	Sundown Naturals
Ultra-C Forte	Douglas Laboratories
Cran-C-Plex	Douglas Laboratories
Bio Complex C	VitaCeutical Labs
All Day C 500 mg	VitaCeutical Labs
Cranberry Concentrated 400 mg	Vitabase
C Extra 500 mg Plus 250 mg Bioflavonoids	Natural Factors
Sustained Release Vitamin C 500 mg	Bronson Laboratories
Vitamin E with Tocotrienols	Bronson Laboratories
Ultra-C Forte	Douglas Laboratories
DHEA 25 mg	Bronson Laboratories
TRC 500 Timed-Release Vitamin C	Douglas Laboratories
Ultra-C	Douglas Laboratories
Ultra-C	Douglas Laboratories
Cranberry Concentrate 400 mg with Vitamin C	Meijer Naturals
C-1000 Caps With 100 mg Bioflavonoids	NOW
Cap C-500 500 mg	Country Life
Maxi-C Caps 1000 mg	Country Life
Red Wine Complex 200 mg	Nature's Bounty
Digesta Guard Forte 10 Capsules	Perque
Cranberry Concentrate 400 mg With Vitamin C	Martin Avenue Pharmacy
Red Wine Extract with Vitamin C	up&up
C-1000 mg With Protective Bioflavonoids	Vitamin World
Timed Release C-500 mg	Vitamin World
Astragalus, Vitamin C & Elderberry	Vitamin World
Phosphatidylserine	Biotics Research Corporation
Maitake D-Fraction	DaVinci Laboratories Of Vermont
Best Camu Camu 4:1 Extract	Doctor's Best
Sustained Release Vitamin C 500 mg	Bronson Laboratories
Venous Support	Karuna
Vitamin C 250 mg	Kirkman
Vitality C	Natural Vitality
Red Wine Complex 200 mg	Spring Valley
Ultimate Eye II	Dr. Stan Guberman
Ambrotose AO	Mannatech
Ambrotose AO	Mannatech
Cap C-500 500 mg	Country Life
C 1000 mg	Thompson
C One Gram	Thompson
C 500 mg	Thompson
Pregnenolone 10 mg	Country Life
Vitamin C 1,000 mg	VitaCeutical Labs
Day Long C 500 mg	Vitamer Laboratories
HLC Uritol Maintenance	Pharmax
Glucosamine +MSM Forte	Douglas Laboratories
Glucosamine + MSM Forte	Douglas Laboratories
C-500 Complex 500 mg	The Vitamin Shoppe
Vitamin C 500 mg	The Vitamin Shoppe
Maxi-C 1000 mg	Country Life
Roziprofen Rose Hip Extract With Vitamin C	Nutrients for Health
TRC 500	Douglas Laboratories
Catechins 65 mg	Dr. Mercola
Super C-1000 Complex	Puritan's Pride
Vitamin C 1000 mg	The Vitamin Shoppe
Vitamin C 1000	Highland Laboratories
Chondro-Flx	Ortho Molecular Products
Probiotic Blend	Swanson
Vitamin C 500 mg	Bluebonnet
Ascorbyl Palmitate 500 mg	Bluebonnet
Ascorbyl Palmitate 500 mg	Bluebonnet
Vitamin C 500 mg	Bluebonnet
Vitamin C-500 mg Plus Rose Hips	Bluebonnet
Immune Glucans	Higher Nature
Immune Glucans	Higher Nature
Vitamin C-500 mg Plus Rose Hips	Bluebonnet
Cranberry	Spring Valley
Cranberry	Spring Valley
Heliocare Ultra	Ferndale Healthcare
C-1000 Complex 1000 mg	The Vitamin Shoppe
Vitamin C-500 mg	Major
C 500 mg	Swanson
C 1,000 mg	Swanson
Vitamin C with Echinacea	Amazon Elements
8 Hour Time Released Vitamin C 500 mg	Basic Vitamins
Buffer-C pH Controlled 500 mg	Country Life
Buffer-C pH Controlled 500 mg	Country Life
Bladder Balance	VitalMax
Gluta-Ascorbs with Vitamin C	Allergy Research Group
TG 100 Natural Glandulars	Allergy Research Group
Derma-Glo	Perricone MD Nutriceuticals
Histamine Block	Seeking Health
8 Hour Time Released Vitamin C 500 mg	Basic Vitamins
Sodium Alginate	Genestra Brands
Timed Release Vitamin C 500 mg	Sundown
Phytoceramides Extract from Rice	ZenVita Formulas
benaGene	AOR Advanced Orthomolecular Research Advanced
Pro-En-Zyme	Nutri-West
Sustained Release C-500 (Ascorbic Acid)	Windmill
Vitamin C with Rose Hips 1000 mg	Dr. Clark Store
Vitamin C 1,000 mg	Dr. Clark Store
C-1000	Bio-Tech Pharmacal
Lipoic 300 mg	Bio-Tech Pharmacal
Resveratrol 100 mg	tnvitamins
Vitamin C Complex 1000 mg	tnvitamins
Vitamin C Complex 1000 mg	tnvitamins
Rutin 250 mg	Natural Factors
C-500 Complex	The Vitamin Shoppe
C-1000 Complex	The Vitamin Shoppe
Vitamin C Capsules 600 mg	Nutrition Rescue
C-1000 Complex	The Vitamin Shoppe
C 500 mg	The Vitamin Shoppe
C 1000 mg	The Vitamin Shoppe
C 1000 mg	The Vitamin Shoppe
Hyaluronic Acid Capsules	Higher Nature Aeterna Gold
Vitamin C 1000 mg	Dr. Clark Research Association Dr. Clark Zentrum
Advanced Immune Support	Higher Nature
Fortify Optima Immune Probiotic 50 Billion	Nature's Way
Cranberry 400 mg	CHK Nutrition
Echinacea & Vitamin C	GNC Herbal Plus
Green Tea Extract 725 mg	Zenwise Health
Citrus Bergamot 500 mg	Whitaker Nutrition
Vitamin C Concepts With Bioflavonoids	Natural Healthy Concepts
Vitamin C + Echinacea	Healthy Directions
Glucosamine + MSM Forte	Douglas Laboratories
Glutathione with Vitamin C	NutriCology
Cranberry Extract 12:1 Plus Vitamin C	Viva Vitamins
Ultra Triple Strength Cranberry 15,000 mg	Spring Valley
Vitamin C 1,000 mg	Nature's Answer
Resilience	ATP Science
Time Released C 500 mg	Nature's Bounty
Cranberry Plus	Genestra Brands
Vitamin C 1000 mg	GNC
Vitamin C 500 mg	GNC
Vitamin C + Echinacea	GNC Herbal Plus
C 1000 mg	The Vitamin Shoppe
Amla C	Groovy Bee
C 500 mg	Mason Natural
Pycnogenol 30+	DC
Pure Radiance C	Pure Synergy
Effinex with C	HBC Health Solutions
Vitamin C	Pure
Baseline Vitamin C 500 mg	Nutra Sport
Ascorbic Acid (750 mg)	BulkSupplements.com
Ascorbyl Palmitate (Vitamin C Ester) (500 mg)	BulkSupplements.com
Vitamin C 1000 mg	Good State
Ascorbic Acid (750 mg)	BulkSupplements.com
Ascorbic Acid (750 mg)	BulkSupplements.com
Ascorbic Acid (750 mg)	BulkSupplements.com
Ascorbyl Palmitate (Vitamin C Ester) (500 mg)	BulkSupplements.com
Probiotic Supplement with Vitamin C	BIOHM
Lipid Soluble Ascorbyl Palmitate 500 mg	Solaray
Advanced Colon Scrub	NutriRise
Green Tea Extract	Zenwise
Vitamin C	Herbadiet
Green Tea with EGCG & Vitamin C	Herbadiet
Polyphenol-C 500	Allergy Research Group
Vitamin C 1000 mg Caps	VitalBulk
Vitamin C 500 mg Caps	VitalBulk
Non-GMO Vitamin C 500 with Berry Polyphenols	NurtiCology
Resveratrol Red Wine Complex	Wonder Laboratories
Resveratrol Red Wine Complex	Wonder Laboratories
Immune Boost	Wonder Laboratories
NuvoFlex	Juvenon
Immune Boost	Wonder Laboratories
Vitamin C	Muscle Feast
Bio C Caps Vitamin C with Bioflavonoids	Woodstock Vitamins
Bio C Caps Vitamin C with Bioflavonoids	Woodstock Vitamins
Bio C Caps Vitamin C with Bioflavonoids	Woodstock Vitamins
Pneumotrate	Progressive Professional from Progressive Laboratories
Vitamin C Caps 1,000 mg	Woodstock Vitamins
Redox C 300 mg	Lifted Naturals
Redox C 1000 mg	Lifted Naturals
C 1,000 mg	Swanson
Immune Boost	DC
Immune Boost	DC
Immune Boost	DC
C-1000 Caps	Twinlab
Vitamin C 1,000 mg with Rose Hips	Nutricost
Vitamin C-1000	Ecological Formulas
Vitamin C-1000 from Tapioca	Ecological Formulas
Vitamin C Quali-C	Lake Avenue Nutrition
Extra Strength Cranberry 15,000 mg	Spring Valley
Gold C Vitamin C 1000 mg	California Gold Nutrition
Gold C Vitamin C 500 mg	California Gold Nutrition
C-1000	Douglas Laboratories
Vitamin C Quali-C	Lake Avenue Nutrition
C-1000	Douglas Laboratories
Vita-C 500	Professional Botanicals
Vitamin C 500 mg Sustained Release	Nature's Blend
Total C Complex + Citrus Bioflavonoids & Rose Hips	California Gold Nutrition
Metabolic C 500 mg	Source Naturals
Total C Complex + Citrus Bioflavonoids & Rose Hips	California Gold Nutrition
RVB 300	RVB 300
Ascorbic Acid Capsules	Pure Encapsulations
Ascorbic Acid Capsules	Pure Encapsulations
Amayloid Armor	Roex
Vitamin C 500 mg	Bluebonnet
Vitamin C-500 mg & Rose Hips	Bluebonnet
Vitamin C-500 mg & Rose Hips	Bluebonnet
Vitamin C 500 mg	Bluebonnet
Vitamin C	Earthborn Elements
Antioxidant with Pycnogenol	Transformations Weight Loss
Vitamin C All Natural Food Form	Swiss BioEnergetics
Respiratory Support Formula + Vitamin C	Puritan's Pride
Ascorbic Acid (Vitamin C) 450 mg	TerraVita Premium Collection
Liposomal Vitamin C + 1500 mg	Herbtonics
Liposomal Vitamin C for Kids	Dr. Mercola
Histamine Block	Seeking Health
Ascorbyl Palmitate	Pure Encapsulations
Iron-C	Pure Encapsulations
Ascorbyl Palmitate	Pure Encapsulations
Daily Digestive Probiotic	Meijer
Iron-C	Pure Encapsulations
Methyl Folate 1360 mcg DFE	Lake Avenue Nutrition
Cranberry 15,000 mg plus Vitamin C	Windmill Natural Vitamins
Placenta	Ecological Formulas
Immune Support System Strength	Quantum Health
Acerola Cherry Extract GOLD (Natural Vitamin C)	CATALO
Acerola Cherry Extract GOLD (Natural Vitamin C)	CATALO
Leptin Manager	XYMOGEN
SynovX Metabolic	XYMOGEN
SynovX Metabolic	XYMOGEN
Pure-C-Bio Capsules	Maxi Health
Hesperidin	Cardiovascular Research
Organic Elderberry	Sunwarrior Be Well
SunActive IsoQ	Tomorrow's Nutrition
Vitamin C 1000 mg	GNC
Vitamin C 500 mg	GNC
Acute Injury	Pure TheraPro Rx
Vitamin C	Everyday Health
Vitamin C 1,000 mg with Rose Hips	Nutricost
Bifido Factor Dairy Free	Natren
Digesta-Lac Dairy Free	Natren
GY-NA-TREN Oral Capsule	Natren
Mega Dophilus	Natren
Mega Dophilus Dairy Free	Natren
Resveratrol	Jarrow Formulas
Resveratrol	Jarrow Formulas
Vitamin C Capsules 600 mg	Chief Originals
Vitamin C	Arms Race Nutrition
Acerola 500 mg	Swanson
Vital Joint Series Defend	Village Vitality
Vitamin C 1000 mg with Citrus Bioflavonoids & Rose Hips	Nature's Blend
Bromelain-Papain Complex	MBi Nutraceuticals
Cranberry Fruit Extract with Vitamin C	Bluebonnet
Immune Boost	Wonder Laboratories
Immune Boost	Wonder Laboratories
Vitamin C 1000 mg Capsules	NutriBiotic Immunity
Vitamin C 1000 mg Capsules	NutriBiotic Immunity
Vitamin C 1000 mg Capsules	NutriBiotic Immunity
Concentrated Cranberry 400 mg	Ron Teeguarden Nutraceuticals
Non-GMO Vitamin C 600 mg	Groovy Bee
Smooth	Sunwarrior Shape
Immune Plus Sleep	Puritan's Pride
Iron 15 mg with Vitamin C	Puritan's Pride
C-1000 mg with Bioflavonoids	Puritan's Pride
C-1000 mg with Bioflavonoids	Puritan's Pride
Ultra-Cee 500 mg Timed Release	Puritan's Pride
Gold C Vitamin C 1000 mg	California Gold Nutrition
Acerola Cherry	Earthborn Elements
Glutathione +BioPerine	Approved Science
Vital C LD	Sovereign Laboratories by GastroDefense
High Potency Vitamin C 1000 mg	NaturesPlus
Vitamin C	Wellness Resources
Histamine Digest with DAOgest 20,000 HDU	OmneDiem
Histamine Digest with DAOgest 20,000 HDU	OmneDiem
Vitamin C 1000 mg/caps	Naturgin Products USA
Histamine Block	Seeking Health
Histamine Digest	Seeking Health
Hyaluronic Acid 100 mg	ForestLeaf
Pure-C-Bio Capsules	Maxi Health
Resveratrol Red Wine Extract	21st Century
Pregnenolone 30 mg	Country Life
C-Plex	Karuna
Venous Support	Karuna
Ceramides for Skin Hydration 5 mg	Dr. Mercola
Achieve Sulforaphane	Neurobiologix
Vitamin C 1,000 mg with Rose Hips	Nature's Way
Vitamin C with Bioflavonoids 1,000 mg	Nature's Way
Essential Youth L-Ergothioneine 5 mg	Life Extension
Glutathione, Cysteine & C	Life Extension
L-Arginine Caps 700 mg	Life Extension
Broccoli Seed Extract	Thorne
Vitamin C with Flavonoids	Thorne
ViMulti A.M.	ViMulti
Age-Less Skin Formula	Bluebonnet
Age-Less Skin Formula	Bluebonnet
Cranberry Fruit Extract with Vitamin C	Bluebonnet
Vitamin C 1000 mg	Bluebonnet
Vitamin C 1000 mg	Bluebonnet
Vitamin C-1000 mg & Rose Hips	Bluebonnet
Vitamin C-1000 mg & Rose Hips	Bluebonnet
Vitamin C 1000 mg with Rose Hips	Nature's Way
Histamine Digest 15,000 HDU	OmneDiem
Histamine Digest 30,000 HDU	OmneDiem
Collagen Generator Plus	BioSil
OncoPLEX Plus Myrosinase	XYMOGEN
OncoPLEX Plus Myrosinase	XYMOGEN
Ascorbic Acid	Thorne
Iron 45 + Vitamin C	Celebrate
Iron 60 + Vitamin C	Celebrate
C-500 500 mg	Swanson
Vitamin C with Rose Hips & Acerola 500 mg	Solaray