QUALITY IN EVERY DETAIL

DNA-Verified Ashwagandha

Discover natural support for stress, memory & sleep.

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Jamieson Complete Gut Health and Jamieson 100% Pure Magnesium Bisglycinate on a green background. The BrandSpark emblem for 2026 Best New Product voted by consumers is displayed in the corner. Subtext reads "Best New Product for Gut Health Probiotic and Magnesium Supplement in a 2026 BrandSpark® survey".

100% Pure
Magnesium L-Threonate

Superior absorption for bone health & muscle function.
Johnson's Magnesium L-Threonate supplement bottle on a green background
QUALITY IN EVERY DETAIL

DNA-Verified Ashwagandha for Stress & Sleep

Shop Now
QUALITY IN EVERY DETAIL

100% Pure Magnesium L-Threonate

Shop Now

ABOUT JAMIESON

Proudly Canadian Since 1922

For over 100 years, Jamieson has been dedicated to supporting the health and wellness of Canadians.

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Frequently asked questions

Yes. Jamieson operates under our 360 Quality Promise, which includes over 500,000 quality tests per year, multi‑stage ingredient verification, and strict standards for purity, potency, and safety—exceeding many regulatory requirements.

Our approach is uniquely end‑to‑end, covering sourcing, testing, formulation, and ongoing monitoring.

Jamieson prioritizes ethically sourced, traceable raw ingredients, screened to avoid contaminants, pesticides, and adulterants before entering production. Jamieson distinguishes itself through a fully integrated, traceability‑first supply chain.

You can learn more about our ingredient sourcing here.

Yes. Every Jamieson product follows Health Canada‑licensed Good Manufacturing Practices (GMP). All our consumable natural health products hold a Health Canada Natural Product Number (NPN), which confirms evaluation for safety, efficacy, and quality.

Jamieson performs multi‑stage potency testing from raw ingredients to final products, helping guarantee that what's on the label is exactly what’s in the bottle.

Jamieson provides one of Canada’s most extensive supplement portfolios, covering vitamins, minerals, herbals, probiotics, omegas, and targeted health blends for all ages.

You can explore our full range of products here.

Trusted For Over 100 Years

Jamieson has been a Canadian wellness leader since 1922 and is consistently recognized as Canada’s most trusted vitamin brand, with over 100 years of credibility behind every product. Jamieson Vitamins quality is backed by rigorous quality standards, scientific oversight, and a century-long commitment to safe, effective natural health products.

360 Quality Promise

Jamieson’s 360 Quality Promise ensures every product is:

  • Tested at every stage (raw materials → manufacturing → final product)
  • Safe, with strict screening for contaminants and adulterants
  • Effective, backed by science-driven formulations

We perform more than 500,000 quality tests each year to validate purity, potency, and safety — a level of rigor that exceeds many regulatory requirements.

Natural Health Products For Every Life Stage

From foundational vitamins & minerals to advanced probiotics and targeted health blends, Jamieson offers a comprehensive portfolio designed for Canadians of all ages and life stages. Discover our range of natural health products for infants, children, adults, women, men, and adults 50+.