It is not permissible to mix medicines with intoxicants, but if it is mixed with alcohol, if drinking a lot of it will cause intoxication, it is haram to handle it and drink it, whether a small amount or a large amount. If drinking a lot of it will not cause intoxication, then it is permissible to handle it and drink it.

If cells taken from aborted foetuses are used in the vaccine, and we are unaware of the nature of these foetuses and whether they were miscarried naturally or aborted deliberately, for an Islamically legitimate reason or otherwise, then what appears to be the case is that it is permissible to receive this vaccine, because we are not certain as to whether its source is haraam, and the basic principle is that things are permissible. For more information, please see the long answer.