Commission Implementing Regulation (EU) 2026/1019 of 7 May 2026 concerning the authorisation of guanidinoacetic acid and a preparation of guanidinoacetic acid as feed additives for chickens for fattening, chickens reared for laying, chickens reared for reproduction, turkeys for fattening and turkeys reared for reproduction (Holder of authorisation: Evonik Operations GmbH)
Data as of 2026-07-04 · Compiled from an official source version. Later amendments or repeals may not be reflected; the official text prevails. · Read the official text ↗
Authorisation
The substance and the preparation specified in the Annex, belonging to the additive category ‘zootechnical additives’ and to the functional group ‘other zootechnical additives’, are authorised as additives in animal nutrition, subject to the conditions laid down in that Annex.
Entry into force
This Regulation shall enter into force on the twentieth day following that of its publication in the Official Journal of the European Union.
ANNEX Identification number of the additive Name of the holder of authorisation Name of the additive Composition, chemical formula, description, analytical method. Species or category of animal Maximum age Minimum content Maximum content Minimum content Maximum content Other provisions End of period of authorisation mg guanidinoacetic acid/kg of complete feed with a moisture content of 12 % mg guanidinoacetic acid/l of water for drinking Category: Zootechnical additives. Functional group: other zootechnical additives (improvement of performance parameters) 4d32 Evonik Operations GmbH Guanidinoacetic acid Additive composition Guanidinoacetic acid ≥ 98 % on a dry matter basis. Solid form Characterisation of the active substance Guanidinoacetic acid produced by chemical synthesis Chemical formula: C 3 H 7 N 3 O 2 CAS number: 352-97-6 Purity: ≥ 98 % Impurities: — maximum cyanamide content 0,03 %; — maximum dicyandiamide content 0,5 %. Analytical method ( 1 ) For the determination of guanidinoacetic acid in the feed additive, premixtures, compound feed and water for drinking: ion chromatography coupled to a spectrophotometric detection (IC-UV). Chickens for fattening Chickens reared for laying or reproduction Turkeys for fattening Turkeys reared for reproduction - 600 1 200 300 600 1. The moisture content shall be indicated on the labelling of the additive. 2. The additive may be used via water for drinking. 3. In the directions for use of the additive and premixtures, the storage conditions, the stability to heat treatment and the stability in water for drinking shall be indicated. 4. Simultaneous use of this additive in water for drinking and in feed is not permitted. 5. When using the additive, attention shall be paid to the supply with vitamin B 12 and methyl donors other than methionine in the diet of the animal. 6. Taking account of the actual intake of water for drinking relative to feed by the animals, it shall be ensured that the amount of guanidinoacetic acid administered via water for drinking is not higher than what it would be if fed at the maximum content of 1 200 mg/kg complete feed. 28 May 2036 ( 1 ) Details of the analytical methods are available at the following address of the Reference Laboratory: https://joint-research-centre.ec.europa.eu/eurl-fa-eurl-feed-additives/eurl-fa-authorisation/eurl-fa-evaluation-reports_en . Identification number of the additive Name of the holder of authorisation Name of the additive Composition, chemical formula, description, analytical method. Species or category of animal Maximum age Minimum content Maximum content Minimum content Maximum content Other provisions End of period of authorisation mg guanidinoacetic acid/kg of complete feed with a moisture content of 12 % mg guanidinoacetic acid/l of water for drinking Category: Zootechnical additives. Functional group: other zootechnical additives (improvement of performance parameters) 4d32i Evonik Operations GmbH Guanidinoacetic acid Additive composition Preparation containing a minimum of 96 % of guanidinoacetic acid. Solid form Characterisation of the active substance Guanidinoacetic acid produced by chemical synthesis Chemical formula: C 3 H 7 N 3 O 2 CAS number: 352-97-6 Purity: ≥ 98 % Impurities: — maximum cyanamide content 0,03 %; — maximum dicyandiamide content 0,5 %. Analytical method ( 2 ) For the determination of guanidinoacetic acid in the feed additive, premixtures, compound feed and water for drinking: ion chromatography coupled to a spectrophotometric detection (IC-UV). Chickens for fattening Chickens reared for laying or reproduction Turkeys for fattening Turkeys reared for reproduction - 600 1 200 300 600 1. The moisture content shall be indicated on the labelling of the additive. 2. The additive may be used via water for drinking. 3. In the directions for use of the additive and premixtures, the storage conditions, the stability to heat treatment and the stability in water for drinking shall be indicated. 4. Simultaneous use of this additive in water for drinking and in feed is not permitted. 5. When using the additive, attention shall be paid to the supply with vitamin B 12 and methyl donors other than methionine in the diet of the animal. 6. Taking account of the actual intake of water for drinking relative to feed by the animals, it shall be ensured that the amount of guanidinoacetic acid administered via water for drinking is not higher than what it would be if fed at the maximum content of 1 200 mg/kg complete feed. 28 May 2036 ( 2 ) Details of the analytical methods are available at the following address of the Reference Laboratory: https://joint-research-centre.ec.europa.eu/eurl-fa-eurl-feed-additives/eurl-fa-authorisation/eurl-fa-evaluation-reports_en .
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