Can't say it wasn't coincidental or placebo effect.
Aagh! I can't help it. I can't stay out of this any longer. While I am sceptical of homeopathy (though I would hope open minded to accept evidence if it is good), the use of 'the placebo effect' in this discussion is incorrect.
'Placebo' is a NON-treatment in RCT, NOT a psychosomatic treatment. Claims of 'placebo effect' (and 'nocebo effect' for that matter) are claims utilising psychogenic explanations. Two completely different things. Claims to placebo and nocebo effect are HIGHLY unsafe, based on problematic attributions of 'mind over matter' where somatic (bodily) illness is concerned, or even malingering/hypochondria or all the other unsafe beliefs that make up any one psychogenic explanation for a somatic illness being 'cured' by belief. There may be various reasons why positive outcomes appear in 'placebo' , and I can dig out some meta-analyses which demonstrate why claims of 'placebo effect' in somatic conditions are unsafe.
In RCTs, people are made aware they may be on a placebo - so patient 'suggestibility' is an unsafe idea as well.
If I'm correct in what I've been given to understand about trials of homeopathy, in RCTs Homeopathy has been shown to perform SOMEWHAT (how much - don't know - varies?) more 'positively' than NON-TREATMENT (the placebo), similarly to other RCTS of allopathic drugs. Claiming that's due to 'placebo effect' is highly unsafe, bearing in mind there was already a 'placebo' (non treatment) in the trials! Which haven't been 'positive! The correct term is placebo response in RCTs, though I note many are trying to conflate the two, which gives the (false) effect a 'response' in an RCT (for loads of reasons) is an 'effect'.
'Nocebo' effect literature is usually based on 'colonial' type stories from great white observers, and the occasional weak correlation of negative outcomes that could be explained by other variables but have been woven into tails of voodoo and shamanism.
Yet people who believe they are exhibiting scientific rationality in being skeptical about homeopathy (which I do understand) still believe in the 'placebo' effect even though it is an unsafe concept. This is where it becomes frustrating.