The Effects of Too Much Carbon Dioxide in the Blood. Excess CO2 can affect you just like a physical obstruction to breathing. Photo Credit Jupiterimages/Goodshoot/Getty Images. Carbon dioxide (CO2) is a gas that's always present in your blood. It is the waste product generated as your body uses up oxygen, and it is expelled from the lungs when you exhale.
Many neuropsychological conditions such as anxiety and depression are directly related to the imbalance of neurotransmitters. Common neurotransmitters include acetylcholine, dopamine, norepinephrine and serotonin etc.
Acetylcholine receptor agonists and antagonists can either have an effect directly on the receptors or exert their effects indirectly, e.g., by affecting the enzyme acetylcholinesterase, which degrades the receptor ligand. Agonists increase the level of receptor activation, antagonists reduce it.