I've used homeopathic drops for several problems and usually they were effective although they worked slowly. I may have used the drops for malaria in combination with Clark's zapper. Drs had missed my swollen spleen but the ND noticed it and suggested some treatments. That was 20 years ago so my memory is weak on what I actually took.
Lactose is a cow's milk Sugar so if you are not lactose intolerant or can eat cow's milk it's probably OK. The alcohol is ethyl alcohol and is in very small amounts. Other alcohols are not approved for human use.