2020年2月14日，应欧盟委员会要求，欧盟动物饲料添加剂和产品（FEEDAP）研究小组就乌洛托品（hexamethylene tetramine）对猪、家禽、牛、绵羊、山羊、兔子和马的安全性发布科学意见。
经过评估，由于缺乏对乌洛托品残留物的定性和定量描述，专家小组无法就其对目标物种的安全性做出结论。部分原文报道如下：
Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed （FEEDAP） was asked to deliver a scientific opinion on hexamethylene tetramine （HMTA） for pigs, poultry, bovines, sheep, goats, rabbits and horses. In 2015, the FEEDAP Panel delivered an opinion on the safety and efficacy of HMTA. In that opinion, the Panel noted that the residues of HMTA in the silage amounted to about 5% of the inclusion level of 600 mg HMTA/kg fresh ensiling material. Since the HMTA residues in silage were analysed as formaldehyde, it was not possible to quantify the contribution of formaldehyde and HMTA to the residues. In the absence of a qualitative and quantitative characterisation of the residues, the Panel could not conclude on the safety of HMTA for the target species. based on the results of a new study in which HMTA was measured in silage, the concentration of HMTA dropped below the limit of quantification of 6 mg HMTA/kg silage, which corresponds to ~ 1% of the HMTA inclusion level in the fresh ensiling material. However, the formaldehyde concentration was not analysed in the silage. In the absence of a qualitative and quantitative characterisation of the residues, the Panel cannot conclude on the safety of HMTA for the target species.
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