The credentialed experts behind every review, recommendation, and article
VitalGuide is a health and supplement resource built on a simple premise: every claim we publish has to earn its place. That means primary research, named credentials, and transparency about what the evidence actually shows — including when it’s weak or mixed. Our editorial team is small and intentional. We’d rather have one expert who knows supplement science deeply than ten generalists who summarize other summaries.
Lead Supplement Editor | Registered Dietitian Nutritionist
Sarah Mitchell is a Registered Dietitian Nutritionist (MS, RDN) with over 12 years of clinical experience in integrative nutrition. She is the primary reviewer and author for all supplement content at VitalGuide. Her clinical background spans outpatient practice, functional medicine settings, and direct client consulting — with a specialization in evidence-based supplementation, sleep health, cognitive nutrition, metabolic health, and hormonal support.
Credentials: MS, Nutritional Sciences • RDN, Commission on Dietetic Registration • 12+ years clinical practice
Specialties: Supplement science, sleep health, cognitive nutrition, metabolic health, sports dietetics, hormonal health, micronutrient assessment
Sports Performance Editor | Certified Strength and Conditioning Specialist
James Harrington is a Certified Strength and Conditioning Specialist (CSCS) with 12 years of experience coaching competitive athletes and recreational lifters across strength sports, endurance events, and team sports. He covers performance supplementation, pre-workout formulations, and training nutrition at VitalGuide.
Credentials: CSCS, National Strength and Conditioning Association (NSCA) • 12 years coaching competitive and recreational athletes
Specialties: Pre-workout formulations, creatine and phosphocreatine metabolism, beta-alanine, caffeine optimization, training periodization and supplementation
Every VitalGuide article follows the same evidence-based review process before publication:
We start with PubMed, Google Scholar, and Cochrane for systematic reviews and randomized controlled trials. We do not base claims on review articles, influencer content, or brand white papers.
Supplement recommendations reference the doses actually studied in clinical trials — not label doses optimized for manufacturing costs.
Where form matters (magnesium glycinate vs. oxide, D3 vs. D2, methylfolate vs. folic acid), we specify the clinically relevant form and explain why.
We disclose known contraindications, drug interactions, and population-specific risks. We do not minimize safety concerns to make a product easier to recommend.
Product selections are based on formulation quality and clinical evidence. Commission rates do not influence rankings. We disclose all affiliate relationships on every article.
VitalGuide earns revenue through affiliate commissions when readers purchase products through our links (primarily Amazon Associates). This revenue funds our research and editorial operations. Our affiliate relationships do not influence product rankings or editorial assessments.
Products are ranked based on formulation quality, clinical evidence supporting ingredients, manufacturing transparency and certifications (NSF, USP, Informed Sport), and value relative to quality. See our How We Review and Affiliate Disclosure pages for full details.
VitalGuide content is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider before starting any supplement regimen.