- AARP
- American Academy of Family Physicians
- American Academy of Pediatrics
- American College of Obstetricians and Gynecologists
- American College of Physicians
- American College of Preventive Medicine
- American College of Sports Medicine
- American College of Surgeons
- American Diabetes Association
- American Dietetic Association
- American Heart Association
- American Medical Association
- American Red Cross
- American Urological Association
- Arthritis Foundation
- Centers For Disease Control and Prevention
- Clear Passage Therapies
- Council For Responsible Nutrition
- Drug Information Association
- Family Doctor
- Food and Drug Administration, U.S.
- Health Canada
- Jay Cutler
- Medline Plus
- Medscape
- U.S. Food and Drug Administration
- National Institutes of Health
- Natural Products Association
- NutraIngredients USA
- Personal Care Products Council
- PubMed
- Travelers' Health - Centers For Disease Control
- U.S. Department of Health & Human Services
- World Health Organization
