More than half a million mice were killed in experiments to batch-test Botox in Ireland over a four-year period, a campaign group has claimed.
A total of 524,596 of the little rodents were used in batch potency testing between 2017 and 2021, according to figures obtained by the Irish Anti-Vivisection Society (IAVS), which is calling for an end to the practice.
A number of Irish-based pharmaceutical companies use mice to batch-test Botox, which is a neurotoxin used in anti-wrinkle injections.