Doctor's Best

Overview

Doctor’s Best is a science-based supplement brand founded over 30 years ago by physicians in California. The brand is known for using clinically-studied, branded ingredients and has become particularly recognized for its CoQ10 (Coenzyme Q10) products.

In June 2016, Doctor’s Best was acquired by Xiamen Kingdomway Group Company, a Chinese high-tech enterprise listed on the Shenzhen Stock Exchange. The company operates through its US subsidiary, Kingdomway USA Corp.

Key Facts

• Founded: ~1990 (30+ years ago)
• Founders: Ken Halvorsrude, Gale Bensussen
• Headquarters: Tustin, California, USA
• CEO: Gale Bensussen
• Parent Company: Kingdomway USA Corp. (since 2016)
• Ultimate Parent: Xiamen Kingdomway Group (Shenzhen: 002626)
• DSLD Products: 883 products
• E-commerce Ranking:
  • iHerb: #3 by total ratings (2,232,373 ratings)

Corporate History

Ownership Structure

Xiamen Kingdomway Group Company (China)
│   • High-tech enterprise (National Torch Project)
│   • Listed: Shenzhen Stock Exchange (002626)
│   • Since: October 28, 2011
│   • Focus: Vitamin production, biotech
│
└── Kingdomway USA Corp. (US Subsidiary)
    │   • US holding company
    │
    └── Doctor's Best, Inc. (acquired 2016)
        │   • Headquarters: Tustin, CA
        │   • CEO: Gale Bensussen
        │   • Focus: Science-based supplements
        │
        └── Brand Portfolio
            ├── Doctor's Best (main brand)
            ├── Doc's Kids (children's line)
            └── Viactiv (acquired 2024)

Brand Portfolio

Main Brand: Doctor’s Best

DSLD Brand ID: 71 Products: 879

Core product categories:

• Coenzyme Q10 (CoQ10) - flagship category
• Vitamins & minerals
• Herbal supplements
• Specialty formulas
• Branded ingredients

Sub-brands

Product Philosophy

Science-Based Approach

1. Branded Ingredients: Uses trademarked, clinically-studied ingredients
2. Research-Backed: Formulas based on published clinical research
3. Quality Testing: Third-party testing and verification
4. Physician Founded: Medical expertise in formulation

Key Branded Ingredients Used

• Kaneka Ubiquinol - Bioactive CoQ10
• Curcumin C3 Complex - Turmeric extract
• Albion Minerals - Chelated minerals
• Ferrochel - Iron bisglycinate
• Suntheanine - L-Theanine

Market Position

Competitive Advantages

1. CoQ10 Leadership: Record sales for CoQ10 products
2. Science Credibility: Physician-founded heritage
3. Branded Ingredients: Premium ingredient sourcing
4. iHerb Dominance: #3 brand on iHerb platform
5. Value Pricing: Quality at accessible price points

E-commerce Performance

Key Products (iHerb)

Top performers by rating count:

1. High Absorption CoQ10
2. Vitamin D3 supplements
3. Magnesium supplements
4. Curcumin products
5. Collagen peptides

Manufacturing

Headquarters: Tustin, California

Doctor’s Best products are manufactured in:

• FDA-registered facilities
• GMP-certified facilities
• Third-party tested

Parent Company: Xiamen Kingdomway

Company Profile

• Name: Xiamen Kingdomway Group Company (厦门金达威集团)
• Stock Code: Shenzhen 002626
• Listed: October 28, 2011
• Status: National Torch Project high-tech enterprise
• Focus: Vitamin production, CoQ10, NMN

Strategic Fit

Kingdomway is a major vitamin manufacturer, making Doctor’s Best acquisition strategic for:

• Vertical integration (ingredient supply)
• CoQ10 leadership (Kingdomway is major CoQ10 producer)
• US market access
• Brand distribution

Recent Developments

Viactiv Acquisition (2024)

• Date: May 31, 2024
• Price: $17.2 million (cash)
• Seller: Guardion Health Sciences
• Product: Calcium supplement chews
• Strategic Value: Women’s health category expansion

Influencer Partnership (2025)

• Partnership with Dr. Tania Elliott
• Focus on health education and awareness
• Social media presence expansion

Related Companies

Kingdomway Portfolio

Competitors

Data Sources

1. Doctor’s Best Official Website
2. PitchBook Company Profile
3. NutraIngredients - CoQ10 Sales
4. Crunchbase
5. DSLD Database (brand_id: 71, 879 products)

Generated by DogTag System | Last verified: 2025-12-20