No Fixed Medicine
There is no fixed medicine for any disease in homeopathy. The remedy is always chosen for the person — not the diagnosis.
The medicine is chosen for the person.
The remedy is chosen to match the individual's constitutional state. Two people with the same diagnosis will very likely receive different remedies — because their constitutions are different. The disease label is the same. The constitutional picture behind it is entirely unique to each person.
Even in the same patient, the remedy may change.
As cure progresses, the disease changes its picture. The first remedy runs its course. A new remedy matched to the new picture is then required.
There is no fixed medicine for any disease. However, in the same patient, the medicine needs to be changed after the first has run its course. This is not a failure — it is the nature of genuine cure unfolding through its layers.
Why over-the-counter homeopathy does not work.
The remedy that helped your friend will not necessarily help you — even for the identical complaint. Without a complete understanding of the constitutional picture, the correct remedy cannot be found.
A correct remedy given to the wrong constitution does nothing. The matching must be precise — and that requires professional case-taking.