There's a lot of scientific evidence for the effectiveness of alternative remedies and treatments readily available in the west (you can see this on PubMed among other places). There are also many people who find them helpful, and that's good enough in itself.
Something that worked really well for me here in the UK is MyoComplex (which includes passionflower, valerian, calcium and magnesium). It helped me get some sleep when my insomnia was really bad. I think they now market it as being for PMS, but my doctor recommended it for insomnia and it's good.