Immune Support Mushroom Tincture

Gribb Immune Support Tincture is a certified-organic functional mushroom tincture combining Agaricus Blazei — Agaricus blazei Murill (25%), Mesima — Phellinus linteus (25%), Shiitake — Lentinula edodes (25%), and Reishi — Ganoderma lucidum (25%). All mushrooms are whole fruiting body, grown in-house on Gribb's certified-organic farm in Portugal under PT-BIO-10.

Double-extracted and standardised to 32–40% beta-glucans (β1,3 / β1,6). Each 1ml serving delivers 2,000mg of functional mushroom content. Contains 20–30% organic alcohol. Each 50ml bottle provides approximately 50 daily servings. Agaricus blazei is studied for its role in activating natural killer cells and macrophages via beta-glucan compounds. Shiitake contains lentinan, one of the most studied immune-modulating mushroom polysaccharides. Vegan.

Flavour-neutral. No known allergens. Produced in a facility handling nuts, coconut, and sesame.

Agaricus blazei Murill — known as the Royal Sun Mushroom or Cogumelo do Sol in its native Brazil — is one of the most studied mushrooms for immune function in modern integrative medicine, particularly in Japan. Its beta-glucan and polysaccharide-protein complexes have been studied for activating natural killer (NK) cells and macrophages, two of the immune system's primary first-response mechanisms. It's notably rare in European supplement formulations, which is part of what makes Gribb's Immune Support tincture genuinely different — and why it's listed first in the formula.

Lentinan is a specific beta-glucan (β-1,3-glucan) found in Shiitake that has one of the longest research histories of any mushroom compound in immune science. It's been studied for its role in supporting white blood cell activity, stimulating immune response at the cellular level, and supporting gut barrier integrity — which is particularly relevant given that approximately 70% of the body's immune cells are located in the gut. It's the most well-documented single compound in the Immune Support formula.

Because the immune system and the stress response are directly linked. Chronic elevated cortisol — the hallmark of ongoing stress — actively suppresses immune function. Reishi's triterpenoids regulate the HPA axis and cortisol levels, which means they protect immune capacity by reducing the suppressive effect of stress on the system. More importantly, Reishi regulates immune response rather than simply stimulating it — preventing the kind of immune overactivation or fatigue that can follow periods of intense stress or illness. It's the adaptive balance layer that makes this a long-term foundation formula rather than a short-term stimulant.

Yes — every mushroom in this kit is grown in our own certified-organic urban farm in Portimão, Portugal. We grow them ourselves from spore through to harvest. Nothing is imported from third-party suppliers or rebranded from elsewhere.

Our production is certified organic by NATURALFA (PT-BIO-10) and every batch is third-party tested before it ships. Full traceability from farm to your door.

It means the mushroom is extracted twice using two different solvents. First, hot water pulls out the water-soluble compounds — primarily beta-glucans and polysaccharides. Then, organic alcohol extracts the fat-soluble compounds — including riterpenoids — that hot water cannot reach.

The two extracts are combined to create a single full-spectrum tincture. It's more labour-intensive than single extraction, but it produces a significantly more complete product.

Mesima (Phellinus linteus — sang-hwang in Korean, meshimakobu in Japanese) addresses the gut-immune foundation — the layer that underpins all immune activity. It has been used in Korean and Japanese herbal medicine for over 2,000 years specifically for gut-immune support and liver protection. These two functions — gut integrity and liver health — are the base layer of immune resilience. Without them, the more direct immune-activating compounds from Agaricus blazei and Shiitake have less solid ground to work on.

Cordyceps works cumulatively — most research showing meaningful improvements in metabolic and ventilatory thresholds used supplementation periods of 3–12 weeks. The short answer: give it a training block (4–6 weeks of consistent daily use) before evaluating. Take it every day — not just on training days. The improvement is in the underlying biology, which builds continuously rather than spiking and crashing like a stimulant.

Daily, year-round. These are functional mushrooms, not acute remedies — their benefit is in the cumulative, systemic changes to immune capacity over weeks and months of consistent use. Think of it like exercise for the immune system: the value is in showing up every day, not just when you need it most. That said, if you feel like you're coming down with something, taking the maximum dose (twice daily) for a short period is a reasonable approach that many users find helpful.

Take 1 full dropper (1ml / approx. 20 drops) up to twice daily. For fastest absorption, hold it under the tongue for 30–60 seconds before swallowing. Alternatively, add it directly to any hot or cold drink. Most people find the easiest approach is to add it to their morning coffee or tea — it becomes habit immediately and you never forget a dose.

Each 50ml bottle contains approximately 50 daily servings at the recommended 1ml dose. At once daily, that's roughly 7 weeks. At twice daily, approximately 3–4 weeks.

Yes — this tincture is designed for daily use as part of a consistent wellness routine.

As with any supplement, if you are pregnant, breastfeeding, have a medical condition, or are taking medication, please consult your healthcare provider before starting. This is a food supplement, not a medicine, and is not intended to diagnose, treat, cure, or prevent any disease.

Yes — all three mushrooms are grown on Gribb's own certified-organic farm in Portugal under PT-BIO-10. Whole fruiting body, no mycelium on grain, no fillers. Full traceability from cultivation to bottle.