Herbal remedies have been used for centuries and the remedies given in the Directory have been included because they have been proven effective throughout this time. They must be used carefully. Where an illness is serious or recurs, consult your doctor or a medical herbalist, using the remedy in concert with his or her directions and letting him or her know what you are doing. Also, do not use these remedies over a prolonged time or exceed the doses given. If possible, discuss your particular symptoms with a qualified herbalist, as it is possible to misdiagnose your condition and another remedy may well suit your particular circumstances better. The Directory is meant to be used as a general guide.