In the present paper, the results of a comparative investigations on the influences of vitamin B
1 and SB
1 etc. on the activity of acetylcholin and adrenalin are reported.
The activity of acetylcholin is enhanced by vitamin B
1 at the dosis of 2 mg per kg or more. In the case of vitamin SB
1, the activity is enhanced even at the dosis of 1 mg per kg. Aethyl-B
2 enhances the activity of acetyl-cholin at the dosis of 0.5 mg per kg to such an extent that it influences the heart, blood pressure and respiration. However, generally speaking, the activity of vitamin SB
1 is the most intense. In the case of co-carboxylase, the activity is found to be inconsistent.
Aethyl-B
1 enhances the activity of adrenalin, while co-carboxylase affected inhibitory.
In all cases, the enhancement of the activity of acetylcholin, enhancement or inhibition of the activity of adrenalin are most remarkably noticed when vitamin B
1 and its derivatives are applied simultaneously in combination of acetylcholin or adrenalin.
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