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Possible side effects of dopamine: All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome: Fast heartbeat; headache; nausea; vomiting.
HOW DRUGS AFFECT NEUROTRANSMITTERS. Dopamine appeared very early in the course of evolution and is involved in many functions that are essential for survival of the organism, such as motricity, attentiveness, motivation, learning, and memorization.ut not all drugs increase dopamine levels in the brain in the same way. 1  Some substances imitate natural neuromediators and take their place on their receptors. 2  Other substances increase the secretion of natural neuromediators. 3  Still other substances block a natural neuromediator.