You know, I tried Kroeger Herbs from a recommendation here and I had hair loss too! I wonder if it's either the male fern or quassia that does it, because I've taken the Wormwood /cloves/black walnut plenty of times with no side effects.
Rub castor oil into your scalp at night. Put something on your pillow so it doesn't get on it. You can cut it with coconut oil is you want to make it easier to spread. I use 50/50 castor oil and coconut oil. I have been using it about two weeks, and you would not believe the new growth popping out of my scalp, and around my hairline!