We develop natural products to increase yields and strenghten farmer economy.

In 2025, we took the step from research to market and launched Amoravis™ commercially – a biostimulant that helps crops perform better by activating their natural growth processes.

Want to know more? Learn more here : Potatisrapport 2025

Our history

Letavis AB was founded by Gustav Nadal and Ingemar Pongratz, combining entrepreneurship and molecular biology. Our first product, Amoravis™, is based on discoveries by Professor Kerstin Uvnäs Moberg, a researcher at the Karolinska Institute and a world-leading expert on oxytocin. Her research into how oxytocin regulates the childbirth process inspired the idea that the substance could also influence plant growth.

As a visiting professor at the Swedish University of Agricultural Sciences (SLU), Kerstin tested oxytocin on plants and quickly observed larger, more vigorous growth. She filed patents, secured research funding, and initiated a ten-year collaboration with an SLU associate professor, during which multiple crops were tested and clear dose–response curves were established. The effects were particularly pronounced in dill and basil, where treated plants developed strong, white root systems compared to the rotten, brown roots observed in control plants. The results also demonstrated up to a 30% improvement in growth, and a bacteria-free laboratory at SLU was contracted to support global patent applications.

In 2018, the first external trials were conducted with commercial growers and delivered positive results. These trials were repeated with consistent outcomes, and additional cultivation environments – such as cut flowers and vertical farming – were tested to further optimize application methods and timing.

Two years ago, Letavis transitioned from the research phase to the commercial phase. Between 2021 and 2024, the research focus was gradually phased out, and a stable company structure was established to support continued commercialization. Today, Amoravis™ is used commercially in potato production.

Our commitment to sustainability

We are proud to contribute to the UN Sustainable Development Goals through our products and actions:

Connect with Us

We are passionate about advancing agricultural innovation and eager to collaborate with those who share our vision. If you’re interested in our products, potential partnerships, or simply want to learn more about our work, we’d love to hear from you. Please feel free to contact us with any inquiries. Let’s work together to cultivate a sustainable future for agriculture.

Contact

Gustav Nadal
Telefon: +46 70 858 06 23

Mail: gustav.nadal@letavis.com

Ingemar Pongratz
Telefon: +46 70 604 76 15

Mail: ingemar.pongratz@letavis.com

Letavis AB
Västra Trädgårdsgatan 9
111 53 Stockholm, Sverige