Dear John,
Thank you for alerting people to the British proposal to reduce the permitted dosage of Vitamin B6 to 10 mg per day.
I have gone through the studies on Vitamin B6 which showed positive benefit of Vitamin B6, along with the dosage tested, cited in M.R. Werbach, M.D.: Nutritional Influences on Illness - A Sourcebook of Clinical Research, 2nd Edition, California, 1993. You will notice that in all but one study the dosage was considerably more than the 10mg that the British government is suggesting.
You may wish to pass on this information to other people, in which case I have no objection, but I must ask that if you do, please do not give out my name or e-mail address - I am not in a position to be able to respond to correspondence.
Yours sincerely,
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Nutritional Influences on Illness is a very important compendium of research that has been done on vitamins and minerals. Below are results of medical studies that have shown positive benefit of Vitamin B6 on specific illnesses, along with the daily dose of Vitamin B6 that was investigated.
Acne Rosacea: 50mg
Acne Vulgaris: 50mg to 250mg
Allergy to MSG: 50mg
Anemia: 100mg to 200mg
Atherosclerosis: 240mg
Bronchial Asthma: 100mg
Carpal Tunnel Syndrome: 50mg to 300mg
Celiac Disease: 80mg
Diabetes Mellitis: 100mg to 150mg
Dysmenorrhea: 100mg every 2 hours during menses and 400mg throughout
cycle
Edema: 25mg
Headache: 300mg to 400mg
Immunodepression: 50mg
Infertility: 100mg to 800mg
Kidney stones: 250mg to 500mg
Neuromuscular Dengeneration - Senile Corea: 40mg to 100mg
Pain: 100mg to 150mg
Parkinson's Disease: 10mg to 100mg
Peripheral Vascular Disease: 240mg
Premenstrual Syndrome: 50mg; another study which was unpublished
used 500mg
Tenosynovitis: 100mg to 150mg
Please notice that in only one of these studies was a dosage of 10mg used, and even in that study a dose of 100mg was also used.