The placebo effect can work for stuff that our mind influences (such as pain) but not so much for things like viruses or broken bones. Things like the size and colour of pills can have an influence on how strong the effect is and may even result in real physiological outcomes. We can also falsely attribute getting better to an inert substance simply because our immune system has fought off an infection i.e. we would have recovered in the same amount of time anyway.
Homeopathy, acupuncture, and many other forms of natural ‘medicine’ have been proven to be no more effective than placebo. Keep a healthy body and bank balance by using evidence-based medicine from a qualified doctor.