Studies of Crystalline Vitamin B

Abstract

The minimum dose of vitamin B hydrochloride which cures polyneuritis in pigeons is approximately 4 γ. Increasing amounts of B lead to higher weight levels in previously depleted pigeons up to 80 γ per day, but even 160 γ is inadequate to bring the birds back to normal weight. The significance of the results in relation to ‘vitamin B₃’ is discussed.