A researcher interested in increasing human energy in a positive direction, I believe that the discovery of pharmaceuticals or natural supplements known to protect or at least not to harm neurotransmitters would be consistent with Tesla's ideas about human momentum. More specifically, since many persons suffer from allergies of one sort or another, I have been searching with limited success for antihistamines or antiallergens that work without adversely affecting neurotransmitters. Might someone here help with pointers to who has published research on this question?