MRL (Mycology Research Laboratories) supplements at Welzo offer clinical-grade mushroom nutrition, meticulously developed to support immune function, cognitive health, and overall wellness. Based in the United Kingdom, the story of MRL began in 1995 when William Ahern, a Madrid-based pharmaceutical licensing executive, approached microbiologist David Law and biologist Malcolm Clark in California with the idea to create a company focused on research-driven mushroom-based healthcare. This collaboration gave rise to MRL’s reputation for producing scientifically validated, practitioner-trusted formulas.

Each supplement in the MRL range is cultivated in sterile, controlled environments to ensure purity, potency, and consistency. The products are manufactured in the Netherlands to food-grade GMP standards and comply with both EU organic regulations and the California Organic Food Act. They are free from pesticides, heavy metals, and unwanted fungal contaminants, making them ideal for sensitive users and those seeking integrative or preventative support.

For users interested in mushroom-based immune support, MRL shares many clinical parallels with our Host Defense collection, another leading name in scientifically formulated, high-purity functional fungi.

MRL supplements feature well-researched species such as Maitake, Lion’s Mane, Cordyceps, and Reishi, each selected for its distinct health benefits. For those focusing specifically on immune modulation or metabolic health, our dedicated Maitake Mushroom collection offers a deeper dive into one of MRL’s most studied mushrooms.

Whether you're looking for daily immune maintenance, neurological support, or long-term wellness, MRL’s capsule and powder formats make it easy to integrate high-potency mushroom extracts into your lifestyle. These products fit seamlessly within our broader Functional Mushroom Supplements collection, allowing for a personalised, goal-driven approach to natural health.

Buy online at Welzo for fast UK delivery and access to evidence-based supplements trusted by practitioners. MRL blends the wisdom of traditional mycology with the rigour of modern science—supporting your health journey with unmatched integrity and care.

To better understand the role of MRL and similar mushrooms in health optimisation, read our expert blog on the healthiest mushrooms and their benefits.