Natural Supplements for Fatigue

My brother-in-law is very low in B12 and we want to know what to use as a supplement to boost him up. He takes B12 injections every other week but is still tired.

Thomas Bartram, in his book "Bartram's Encyclopedia of Herbal Medicine (available at Richters) lists sources of B12 as: all foods of animal origin:meat, liver, kidney, dairy products, egg yolk, fish. He also lists wheatgerm, yeast, spinach, lettuce, alfalfa, kelp and dulse.
Maintaining a daily diet with all of the B vitamins is necessary for a healthy nervous system. Most B vitamins are available in meat, fish and poultry. Whole grains and legumes are a good source of vitamins B1 and B6.
I suggest that you consult with a qualified natural health practitioner, such as a medical or clinical herbalist, or a naturopath, to determine the cause of your brother-in-law's health problem and to recommend supplements that will suit his particular needs.
Reishi mushroom (Ganoderma lucidum) is a good tonic, taken daily, long term, for many chronic diseases. You could look into using it for your brother-in-law's purposes.