I once heard a radio talk by the Director of Paris's main Homeopathic hospital.
The doctor didn't hide the fact that Homeopathy is a load of nonsense.
He talked of giving patients small phials of pure water coloured both blue and red, and asked them to tell him which colour had the most pronounced effect. He even told some of his patients that it was no more than coloured water. They all came back with preferences for one or other of the colours, whilst saying that they had been very effective!
The power of the placebo is genuine, and so, it appears, is the power of Homeopathy.