Convulsions occur when there is an issue with the normal functioning of the nervous system. Vitamin that prevents convulsions: Pyridoxine (Vitamin B B6 ) is required for the synthesis of neurotransmitters such as GABA. Deficiency of Vitamin B6⟶ decreased GABA formation → neuronal hyperexcitability ⟶ convulsions. Now let's check the source: Vitamin B6 (Pyridoxine) is found in cereals, pulses, nuts, and non-vegetarian foods.