Not really. Most homeopathic placebos are diluted to the point that you'd need to take anywhere from billions of doses up to get even a single molecule of the 'ingredient'. They are literally just water. Not ot mention that in most cases, the 'cause' is based on a speculative or outright fictional 'link'. For example, one of the most well known placebos is Oscillococcinum, which claims duck liver/heart 'causes' flu. It is also diluted to the point that, to quote, "As there are only about 10^80 atoms in the entire observable universe, a dilution of one molecule in the observable universe would be about 40C. Oscillococcinum would thus require 10^320 more universes to simply have one molecule in the final substance."