What is an herbal remedy for anxiety?

A 1mg xanax in chamomile tea!

Be careful of Kava Kava. Some types include the arial parts and not just the roots, and are thus harsh on your liver.

Regarding the previous answer;
St. John's Wort is anti-depressant, and probably similar in action to Prozac (a selective seratonin reuptake inhibitor) although with fewer side effects. It is more 'anti-depressant' than 'anti-anxiety.' When I tried it, it caused anxiety (I'm not depressed).

I think belladonna has some sedative effects (the family name solanacea comes from the word 'comforter'), though that's not an herb that I'd use. It's easy to overdose and kill yourself if you don't know what you're doing.

Chamomile is often touted as relaxing, though I don't know if that's a pharmocological claim.

Lemon Balm is another name for the previously mentioned 'melissa.'

Valerian is used as a sedative, though I've never tried it myself.

B-vitamins + ascorbates (non acidic, sugar-free vitamin C) can be helpful. Don't get the sugary stuff, or ascorbic acid that most places sell. People usually take too much b-vitamins and too little vitamin C. B-vitamins are anti-stress. Large doses of ascorbate (~1 gram ever 3 hours, though helpful dosage varies dramatically from person to person) help renew opioid receptors. Please note that ascorbate also facilitates the clearing of other drugs from the body and can thus interfere with any other drugs you're taking.

Aerobic exercise (not just strength training) and massage are of course excellent remedies as well. Human touch has been shown clinically to lower anxiety.

There is a great book I checked out from the library called:" The Anxiety Book, Developing Strength In The Face Of Fear" By: Jonathan Davidson M.D.
This is a really good book and gives many recommendations in it the doctor says he's scene good results for mild anxiety/depression from : Kava, and St. John's-wort, Valerian( a proven but mild sleep agent,) passionflower, Melissa, and camoile.
There is little hard scientific proof to support the use of any of these herbs for treating full blown anxiety disorders though.
The doctor recommends trying mainstream pharmaceutical type anxiety remedies first and if they dont work for you, or you can't stand the side affects then try the herbals. But Try at your own risk, there have been recent studies done (If I remeber correctly) that say saome of these herbs may be very harmful.
You asked, so theres your answer according to the doctor.
You might want to check out the book, for more specific answers about dosage, and other contraindications.
This doctor is the director of anxiety and traumatic stress at Duke University Medical Center.
Good Luck!

Valerian 530 mg. ◄ It has been my life saver for many years.► Take a serving size 3 capsules at the beginning, and increase as needed. I take 5 capsules (five!) at once <<-- works best for me.

chamomile tea, a nap and your woobie.

It works differently for everyone but if your in the right setting cannabis can be very useful. Less seems to be more for me also.

Calcium and magnesium supplements;B-complex rebounding exercises and message.

I agree with what others have already suggested. Another option, though not an herbal remedy, is a flower remedy

Bach Flowers "Rescue remedy"

Here's their website :

http://www.bachflower.com/Rescue_Remedy.htm

Its not habit forming,its easy to take and its strangely effective..

Chamomile tea is a pretty mild one
So is Valerian
Lemon balm
Kava kava (my personal favourite)
Skullcap (I hear it's also good for when you're quitting smoking)
Passionflower
Motherwort (it calms you down without making your thinking fuzzy)

Try using Gaba that helps you sleep and relax. It takes the edge off you.