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.
In large doses its effects would be deadly due to cardiac failure, asystole, and muscle paralysis unless it was reversed. Acetylcholine is a neurotransmitter of the parasympathetic nervous system and can act on at the muscarinic or the nicotinic receptors.