You need a whole care plan, such as including chiropractic care and naturopath doctor that can help guide you in transitioning your daughter into herbal/natural products and make sure they work for you. Also, I don't know if you have already done so, but nutrition is key. no high fructose corn syrup, no artificial sugars, (if possible no sugar at all, use honey?), no MSG)
there are herbal products and also homeopathic products. need to find what would be best for your daughter. for example, chamomile is nice and calming, but it's also a ragweed, so people with ragweed allergies should not consume it.
I mentioned chiropractic treatment because I know that if some of the neck vertebraes are out of alignment it can trigger more agressive behavior.
Also certain food allergies can do the same.
And just like some meds work better on some people, same goes for herbs. there are many herbs that can help with the same issue. so find someone knowledgeable and look up each herb that is recommended before using it.
check out: http://www.blockcenter.com/
you can also check this book: smart medicine for a healthier child
Good luck and keep looking until you find the right answer for you.