Many of us find therapies that work for us and stick to them. Some people respond well to nutrition, to pharmaceutical medications, to supplements, or to homeopathy.
When we find something that works for us, extrapolating is easy; we believe friends, family, patients will be cured by the same treatment. However, "a medicine's power lies in its ability to alter the human condition" (aphorism 19). Therefore anything that alters the human condition can be considered a medicine. A supplement, a new diet, a new lifestyle all can alter our condition and therefore can be considered medicine. Since almost anything could thereby be considered a medicine, patients can then ask "is this medicine right for me".
Disease is removed by medicines acting on our whole person and removing all of our symptoms. We are all individuals and will need different forms of healing. I encourage you to experiment and find the one that works best for you, whether or not it's conventional medicine or alternative medicine.