another one I heard is good for it is gtf chromium. I heard it was even better but whatever form you take, chromium is important.
Also when taking herbs for diabetes, don't use capsules. It is best to use organic or wildcrafted tinctures from a company who soaks them long enough and uses lots of the herb like herbpharm or herbdoc.com Also making them yourself using organic bulk herbs is very important..like making a cinnamon tincture, gymnema sylvestre, etc
capsules are not easily absorbed and sometimes herbs are burnt in the powdering process.
Tinctures are absorbed right away bypassing digestion and the menstrum (alcohol) extracts more of the pytochemicals from the herbs.
Also organic and wild-crafted herbs contain 7-10 times more of the phytochemicals that cure and prevent disease.