https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1874503/
In conclusion, the hypothesis that any given homeopathic remedy leads to clinical effects that are relevantly different from placebo or superior to other control interventions for any medical condition, is not supported by evidence from systematic reviews. Until more compelling results are available, homeopathy cannot be viewed as an evidence-based form of therapy.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3781106/
Overall, no consistent or clinically relevant results across all outcomes between homeopathic Q-potencies versus placebo and homeopathic versus conventional case taking were observed.
There are plenty, here are two random publications discussing homeopathy vs placebo. You may see an effect from a homeopathic treatment, but you would also see the same effect if I gave you a tic-tac and told you it was a medication for the same ailment.
I wondered whether to bother citing the MANY MANY studies on the subject, but I figured there's so many I don't know where to begin and anyone interested can look it up on pubmed or just accept that water isn't medicine for anything beyond dehydration.
When that is the case it's easier to just site a few meta studies and call it a day.