(5)In view of the above, the Commission considers that L-lysine sulphate and L-lysine monohydrochloride produced with Corynebacterium glutamicum CGMCC 7.453 satisfy the conditions provided for in Article 5 of Regulation (EC) No 1831/2003. Accordingly, the use of those substances as feed additives should be authorised. The Commission considers that the safe use of these amino acids in water for drinking, with regard to possible hygiene risks, is to be considered within the scope of Regulation (EC) No 183/2005 of the European Parliament and of the Councilnote laying down requirements for feed hygiene. It is appropriate to alert the user to take into account the dietary supply with all the essential and conditionally essential amino acids, in particular in the case of supplementation with L-lysine sulphate and L-lysine monohydrochloride via water for drinking. When fed to ruminants, L-lysine sulphate and L-lysine monohydrochloride produced with Corynebacterium glutamicum CGMCC 7.453 need to be protected against degradation in the rumen. Also, the Commission considers that a maximum level should be set up for L-lysine sulphate due to the potential adverse effects from the intrinsic high sulphate content in the additive. The level of 10000 mg/kg of complete feed was regarded as safe according to the Authority’s opinion of 16 June 2015note issued for another L-lysine sulphate. In addition, the Commission considers that appropriate protective measures should be taken to prevent adverse effects on the health of the users of the additive.