British wellbeing brand Doctor Seaweed has secured a significant new listing with Costco UK, which is set to stock two of its bestselling supplements, Pure Seaweed and Menopause+, from July 2026.

The listing marks a significant milestone for the brand and helps brings seaweed-based nutrition to a wider, mainstream audience.

“This is a defining moment not just for Doctor Seaweed, but for the seaweed category as a whole,” says Dr Craig Rose, founder of Doctor Seaweed.

“Costco is an incredible retail partner. To have Pure Seaweed and Menopause+ on its shelves means millions of UK consumers will, many for the first time, discover the genuine nutritional power of British seaweed. 

“To have Pure Seaweed and Menopause+ on its shelves means millions of UK consumers will, many for the first time, discover the genuine nutritional power of British seaweed”

This listing signals something bigger: seaweed supplementation is moving beyond specialist health retail and firmly into the mainstream.”

While this launch is focused on the UK market, Doctor Seaweed sees a wider opportunity, with Costco’s international infrastructure and strong influence on global retail trends create potential for for category expansion across North America, Asia and Europe.

Doctor Seaweed says the Costco listing represents “the next phase of growth for a brand built around one clear mission: helping more people access the nutritional benefits of seaweed in simple, effective and scientifically credible ways”.