Alternatives to minoxidil?

I can't use topical minoxidil because I have cats and can't bring myself to take that risk and I can't get hold of oral minoxidil easily because NHS doctors in the UK don't prescribe it (although I am looking into private dermatologists). Is there any other treatments people have used that work?? I keep getting recommended the Scandinavian BioLabs products but can't find any real evidence that they actually work.