Just because there are crooks in the world that became rich by seeling fake homeopathic remedies, that doesn't mean there aren't homeopathic remedies that work.
The placebo effect doesn't work on me because it is in my nature to be pessimistic about everything. Having asthma also makes my lungs sensitive to any cold I catch.
Paracetamol [1] doesn't work on me. Oscillococcinum [2] does.
And I'm not into homeopathy, but I'm a tea addict and I know from personal experience the effects dozens of plants have on my body. Just last week I drank tea made from cherry tails ... it made me go pissing every half an hour (really useful when you've got prostate problems).
[1] http://en.wikipedia.org/wiki/Paracetamol
[2] http://en.wikipedia.org/wiki/Oscillococcinum