Mexiletine

Can anyone help me? My dog is currently taking
mexiletine and I am trying to source it online to get it cheaper but I can't seem to find an online vet in the UK that has it. Does anyone know where I could get it for my dog? I think its used more for humans

It might be worth speaking to your vet, they should be understanding re sourcing it online especially if it's a long term medication. It might be manufactured under different trade names or there may be an equivalent that they can recommend that is available online.