Depends on what you mean by "real medicines" and "really work". Homeopathy is way safer than any of the petroleum derived pharmaceuticals for anyone at any stage. If it is properly selected based on specific number of symptoms it can genuinely help people, and who cares if it due to placebo or by itself, its a win-win situation either way without any harm to the user and any dangerous side effects. On the other note the way pharmaceuticals are tested is incompatible with the paradigm in which homeopathy operates, so any of the usual tests are meaningless (not that they are truly meaningful in case of pharma products). 

 Of course it is safe and wont harm you. It is only water. Good luck with treating cancer with it!

Seriously, stop pushing homeopathy as a cure. If one person stops having a real treatment to use homeopathic treatments you will have seriously harmed them. 

I like Big Pharma as little as anyone else but homeopathy is laughable. Do some math, by the time you stop diluting things there is **absolutely nothing**, sometimes not a single molecule of the active principke in that glass of water. And no, water doesn't have "memory".  

 If anyone stops using synthetic and toxic petroleum based  pharmaceuticals in favor of harmless homeopathy, they could only possible benefit from it, that is the point.

In regards to water having memory, there is quite a well known experiment showcasing that many different things can influence the structure of water. Call it "memory" or not but there definitely is something at work. https://www.youtube.com/watch?v=1qQUFvufXp4