Well, back when I started using it, there was only one online brand that my Practitioner back then knew of - Gaia Herbs.(
goo.gl/6xnzQU) I had never ordered anything online before so I didn't know much myself!
I ordered their smallest (1 ounce) bottle and gave it a whirl. In a week, I was noticing very small improvements in several area - including my anxiety. I ordered one more bottle - a large one this time! And when we were about
1/2 way through that bottle, we planted our own oats and I now make my own tincture.
I started out using 1/2 a dropperful, about
20 drops. I was coming off a rather large dosage of Xanax at the time, so my practitioner had me start off with a larger dose. I did have to increase my dose to 1 dropperful(about
30 drops), 3 times a day, but was able to back down to only 1 dropperful once I healed. I'm now back up to a full dropperful 3 times a day right now, but may be able to back down soon, considering the improvements I'm seeing.
I hope this has answered your questions, but if not - or if you have more, please ask!!