Irish Oysters, 100% pure extract

Rind and Root Irish Oyster Extract is the nutrient dense marine superfood which contains zinc, copper, manganese, selenium and iodine in perfect synergy as nature intended. Our Oyster Extract is sourced exclusively from Ireland, where fresh oysters are gently processed to preserve their full bioactivity They are never freeze-dried; instead they undergo slow convection drying to maintain nutrient integrity. Each capsule contains just pure dried oyster meat extract without any fillers, flow agents, bulking agents or excipients.

Our oysters (Crassostrea gigas) grow for three full years in clean Irish waters before harvesting. 

Each batch is independently tested for heavy metals, purity and microbiology to ensure exceptional quality. 

Nutritional benefits

As a natural source of zinc, selenium, vitamin B12, copper and iodine the Oyster Extract can support:

• Energy production and reduced tiredness and fatigue (Copper, Iodine, B12)
• Healthy nervous system function (Copper, Iodine, B12)
• Normal thyroid hormone production (Zinc, Selenium, Iodine) (1)
• Healthy hair, skin and nails (Copper, Zinc, Selenium)
• Normal DNA synthesis (Zinc)
• Immune function, improved resilience and faster recovery (Zinc, Copper, Selenium, B12) (2)
• Fertility and reproductive health in men and women (Zinc) (3)
  
• Hormonal balance throughout the menstrual cycle (Zinc)

Why should you choose Oyster Extract instead of a standard zinc supplement? Zinc is an essential cofactor in over 300 enzyme reactions. In oysters, zinc is naturally paired with copper at the 11:1 ratio - a balance that supports optimal absorption and utilisation. Many people find whole‑food sources of zinc gentler on the stomach and easier to tolerate.

References

(1) Shulhai, A-M. et al. (2024). The Role of Nutrition on Thyroid Function. Nutrients. https://doi.org/10.3390/nu16152496

(2) Jia, J. et al. (2025). Oyster powder supplementation enhances immune function in mice partly through modulating the gut microbiota and arginine metabolism. PMID: 39868593

(3) Matsuda, Y. Watanabe, T. (2003). Effects of oyster extract on the reproductive function of zinc-deficient mice: bioavailability of zinc contained in oyster extract. Congenit Anom (Kyoto). PMID: 15041778.