# Safety and efficacy of a feed additive consisting of copper lysinate sulfate for all animal species (Phytobiotics Futterzusatzstoffe GmbH)

**Authors:** Roberto Edoardo Villa, Giovanna Azimonti, Eleftherios Bonos, Henrik Christensen, Mojca Durjava, Birgit Dusemund, Ronette Gehring, Boet Glandorf, Maryline Kouba, Marta López‐Alonso, Francesca Marcon, Carlo Nebbia, Alena Pechová, Miguel Prieto‐Maradona, Ilen Röhe, Katerina Theodoridou, Georges Bories, Jürgen Gropp, Jaume Galobart, Paola Manini, Fabiola Pizzo, Maria Vittoria Vettori, Anita Radovnikovic, Alberto Navarro‐Villa

PMC · DOI: 10.2903/j.efsa.2025.9555 · EFSA Journal · 2025-07-25

## TL;DR

This paper evaluates copper lysinate sulfate as a feed additive, finding it safe for animals and the environment but unable to confirm its safety for consumers or efficacy due to lack of data.

## Contribution

The study provides a comprehensive safety assessment of copper lysinate sulfate for animal feed under EU regulatory conditions.

## Key findings

- Copper lysinate sulfate is safe for all animal species at maximum authorized copper levels in feed.
- The additive is not a skin irritant but is considered a skin and respiratory sensitiser.
- The use of the additive is considered safe for the environment under proposed conditions.

## Abstract

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of copper lysinate sulfate as nutritional feed additive for all animal species. The additive has not yet been authorised in the EU. The FEEDAP Panel concluded that the additive copper lysinate sulfate is safe for all animal species and categories at the respective maximum authorised total copper levels in feed. In the absence of reliable deposition data, the FEEDAP Panel could not conclude on the safety of the additive for the consumer. In the absence of data, the FEEDAP Panel could not conclude on the eye irritation potential of the additive. The Panel concluded that the additive is not a skin irritant and thus it should be considered a skin and respiratory sensitiser; inhalation and dermal exposure are considered a risk. The FEEDAP Panel concluded that the use of the additive under the proposed conditions of use is safe for the environment. The Panel was not in the position to conclude on the efficacy of the additive at the maximum authorised inclusion level.

## Full-text entities

- **Diseases:** eye irritation (MESH:D005128)
- **Chemicals:** copper (MESH:D003300), Phytobiotics (-)

## Full text

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## References

15 references — full list in the complete paper: https://tomesphere.com/paper/PMC12291122/full.md

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Source: https://tomesphere.com/paper/PMC12291122