Praise be to Allaah.
If these drinks are not
mixed with alcohol – which is what appears to be the case – then there is no
reason why one should not buy them and consume them, because in this case
they are pure (taahir) and may be used. The fact that the company produces
haraam things such as alcohol does not mean that the sale is not valid. But
if you can avoid buying the products of this company, that is better, and it
may cause them to give up producing alcohol.
And Allaah knows
best.