In addition to taking antihistamines, take multi-vitamins to boost your immune system during allergy season. 1  Cetirizine. Also known as Zyrtec, this is the best antihistamine available. 2  Loratadine. Also known as Claritin or Talavert. 3  Diphenhydramine. Also known as Benadryl.  Chlorphenamine.
Figure 7. How neurotransmitters work, part 1. Chemicals called neurotransmitters are responsible for transmitting nerve impulses across the synapse from one nerve cell to another, or from one nerve cell to a target organ or gland.
Synaptic Transmission. The communication from a NEURON to a target (neuron, muscle, or secretory cell) across a SYNAPSE. In chemical synaptic transmission, the presynaptic neuron releases a NEUROTRANSMITTER that diffuses across the synaptic cleft and binds to specific synaptic receptors, activating them. The activated receptors modulate specific ion channels and/or second-messenger systems in the postsynaptic cell.