Does St. John's wort really work on depression and anxiety?!

Yes it works for depression and anxiety.
http://www.holisticonline.com/herbal-med…
There's no legal hurdle. Anyone can buy it at any health food store.
MD's are not trained in holistic/herbal medicine, so with a bit of research you'll end up knowing far more than your doctor. You don't need a doctor's approval anyway.
You can see a professional Homeopath or Naturopath -- they're the experts on non-drug treatments of acute and chronic illness and medical conditions.
MD's are trained to prescribe conventional drugs. Unless they're trained in both forms of medicine you might run into a brick wall of prejudice, because natural medicine is seen as the competition.

I am in the UK and therefore don't know what the situation is in the USA. I have personal experience with St John's Wort on several occasions and it has always helped me when I needed it. My body didn't agree with anti-depressants either.
They say the effects of St John's Wort won't kick in for a few weeks, but in my case it worked within a week - maybe because I wasn't taking any other medicine and because I try to treat things homeopathically. I found it very effective.
I agree with the entry of "thenoseknows" that says it is OK. Go and see a naturopath or homeopath or herbalist. A little word of warning though: St John's Wort can interfere with other medication you regularly take, as in my case I now can't take it any more, so be clear with whoever prescribes or sells it if you are on medication. Good luck.

Have been an alternative therapist and have used homeopathy for 20 years or so.

As with most drugs and allies, effect varies from person to person. It CAN work as promptly as a week; sometimes over 6 weeks.

I would inquire about other similar things that don't get as much notice, like kanna (mesembrine) or vitex (chaste berry). The first acts like most SSRIs, just on a more subtle level. The second is more like Wellbutrin/anti-anxiety.

If you are looking for a natural alternative to drugs one might consider SAM-e ,kinda like a vitamin in health food stores and it works well.For anxiety look for Valerian or Kava-Kava,both work as a natural alternative.Good luck and God bless!

No. In fact, it might even make it WORSE. However, it MAY boost your immune system. Always consult your doctor before taking something you don't know about it in case you have an allergic reaction. Then they will know how to treat what is affecting you.