Dopamine is known as being a happiness hormone, but other than the brain it also plays a part in the immune system, kidneys and digestion. As others have said getting it into the blood stream won’t alter your mood in addition due to the other roles of dopamine it isn’t just a neurotransmitter there is a bit more going on and you don’t really want to tamper with it. https://youtu.be/LRGfGoRXqQY
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