I was going to say that it (homeopathy) absolutely does work, but then I thought I'd better re-word this to say that in many cases, it has worked for myself as well as others. For example, I take St. John's Wort (an over-the-counter, plant-based herb in capsule form) for depression. For myself, the results were dramatic with a marked improvement. Whenever I feel a cold coming on, I take Zicam (another over-the-counter natural drug) and again with great results. If I remember correctly, it even says "Homeopathy" right on the bottle. And, if I'm not mistaken, I think even accupuncture has been called homeopathy in certain circles. Whether or not this is true, it's worked wonders for my mother's arthritis/joint pain.
I think where people can get themselves into trouble (healthwise), is when they rely solely on natural remedies in lieu of prescription meds. In addition, because the word "natural" or "homeopathy" is on the bottle, people sometimes have the mistaken view that you cannot overdose or that these meds cannot hurt you. From a personal example, when I began taking St. John's Wort (and I was even following the directions), I soon began experiencing a heightened sensitivity to bright lights. I even began to experience migrain headaches. Well, after a little more research, I discovered that, sure enough, too much St. John's Wort does in fact does increase sensitivity to light. I decreased my intake and no more sensitivity to light.
So, I would say that yes, in many cases, homeopathy can and does work but, as a precaution, you should probably discuss the issue with your primary healthcare provider before you begin treating yourself. In addition, do your homework. Learn everything you can about the medication you want to try out. And finally, I don't fully understand what 'spiritual' side-effects our holy elders were referring to, but if you're concerned, by all means, discuss it with your priest/spiritual father or mother.
I apologize if I came across as a Mr. Know-It-All because I surely don't. But I do hope that my (and the others') personal examples were helpful.