...is the remedy against terror, and as such is an important ingredient in Dr Bach's traditional crisis combination.
The Rock Rose state may start out as a more everyday Mimulus or Red Chestnut state, but it is further along the path from these, being a panicky, terrorstruck fear that makes conscious thought and decision next to impossible.
The remedy provides calm and courage. We are able to forget fear as our courage is renewed.
Dr Bach's description
The rescue remedy. The remedy of emergency for cases where there even appears no hope. In accident or sudden illness, or when the patient is very frightened or terrified or if the condition is serious enough to cause great fear to those around. If the patient is not conscious the lips may be moistened with the remedy. Other remedies in addition may also be required, as, for example, if there is unconsciousness, which is a deep, sleepy state, Clematis; if there is torture, Agrimony, and so on.
- The Twelve Healers and Other Remedies
Quoted from http://www.bachcentre.com