# Safety and efficacy of a feed additive consisting of zinc‐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, Katerina Theodoridou, Jürgen Gropp, Orsolya Holczknecht, Jaume Galobart, Eleni Gkimprixi, Jordi Ortuño, Fabiola Pizzo, Jordi Tarrès, Maria Vittoria Vettori, Alberto Navarro‐Villa

PMC · DOI: 10.2903/j.efsa.2026.9927 · EFSA Journal · 2026-02-24

## TL;DR

This study evaluates the safety and effectiveness of a zinc-based feed additive for all animal species, finding it safe for animals and ecosystems but not for marine environments.

## Contribution

The study provides a comprehensive scientific evaluation of zinc-lysinate sulfate as a feed additive across all animal species.

## Key findings

- Zinc-lysinate sulfate is safe for target species and terrestrial/freshwater ecosystems.
- The additive is an effective source of zinc for all animal species.
- It is irritating to skin and eyes and poses a sensitization risk.

## Abstract

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of Zinc‐lysinate sulfate (Plexomin® L‐Zn) as a nutritional feed additive for all animal species and categories. The applicant has provided evidence that, in essence, the additives under assessment comply with the proposed specifications. The Panel on Additives and Products or Substances used in Animal Feed (FEEDAP Panel) Panel concludes that zinc‐lysinate sulfate in animal nutrition under the conditions of use proposed is safe for the target species and for the terrestrial and freshwater ecosystems. No conclusion can be drawn on its safety for the marine environment. In the absence of adequate data on zinc deposition, the FEEDAP Panel cannot conclude on the safety of the additive for the consumer. The additive is irritant to the skin and eyes and is a dermal and respiratory sensitiser. Exposure of users by any route is considered a risk and should be minimised. The Panel concludes that the additive is an efficacious source of zinc for all animal species.

## Full-text entities

- **Genes:** FGG (fibrinogen gamma chain) [NCBI Gene 395837] {aka fibrinogen, gamma-fibrinogen}, TF (transferrin (ovotransferrin)) [NCBI Gene 396241] {aka LTF, TFEW, conalbumin}, KITLG (KIT ligand) [NCBI Gene 396028], ALB (albumin) [NCBI Gene 396197]
- **Diseases:** carcinogenic (MESH:D011230), overdose (MESH:D062787), eye irritation (MESH:D005128), skin irritation (MESH:D012871), zinc deficiency (MESH:C564286), DM (MESH:D009223), IUPAC (MESH:D017759)
- **Chemicals:** sodium (MESH:D012964), PCBs (MESH:D011078), potassium (MESH:D011188), sulfur (MESH:D013455), dioxin (MESH:D004147), PCDDs (MESH:D000072317), PCDFs (-), urea (MESH:D014508), polychlorinated dibenzofurans (MESH:D000072338), calcium (MESH:D002118), glucose (MESH:D005947), creatinine (MESH:D003404), magnesium (MESH:D008274), ZnSO4 (MESH:D019287), l-Lysine (MESH:D008239), Sulfates (MESH:D013431), Zinc (MESH:D015032), phosphate (MESH:D010710), furans (MESH:D005663), uric acid (MESH:D014527), bilirubin (MESH:D001663), nickel (MESH:D009532), water (MESH:D014867), chloride (MESH:D002712), cholesterol (MESH:D002784)
- **Species:** Felis catus (cat, species) [taxon 9685], Homo sapiens (human, species) [taxon 9606], Bos taurus (bovine, species) [taxon 9913], Oryctolagus cuniculus (domestic rabbit, species) [taxon 9986], Gallus gallus (bantam, species) [taxon 9031], Canis lupus familiaris (dog, subspecies) [taxon 9615], Salmonidae (salmonids, family) [taxon 8015]

## Full text

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## References

17 references — full list in the complete paper: https://tomesphere.com/paper/PMC12930212/full.md

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Source: https://tomesphere.com/paper/PMC12930212